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User talk:Liviana Agrestein

ONE PERSON CAN CHANGE THE WORLD. EVEN U CAN CHANGE THE WORLD, U CAN START WITH THE PERSON NEXT TO U. MAKE THE WORLD A BETTER PLACE.♥♥♥

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title: User talk:Liviana Agrestein


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title: Mewa User's Guide/Import footage


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History of wireless telegraphy and broadcasting in Australia/Topical/Publications/Australasian Radio World/Contents

1936 08
CONTENTS:

Pick-Ups. . . . . . . . . . . . . . . . . . . . . . 3

"Air-Commodore" Has High Gain and Selectivity. . . . 4

Radio Makes the Airways Safe. . . . . . . . . . . . . 5

Pedal-Driven Teleradio. . . . . . . . . . . . . . . . 6

"Empire Shortwave Three". . . . . . . . . . . . . . . 7

A Simple Five-Metre Battery Receiver. . . . . . . . . 14

Palec Vacuum Tube Voltmeter. . . . . . . . . . . . . 16

Adding Class B to the "Sky-Cruiser Battery Four". . . 17

Radio Ramblings. . . . . . . . . . . . . . . . . . . . 19

Systematic Servicing Brings Best Results. . . . . . . 20

"Simplified D.W. Battery Money-saver". . . . . . . . . 22

The ABC of Multi-Range Meter Design. . . . . . . . . . 27

A Nine·-Range D.C. Multi-Meter. . . . . . . . . . . . . 29

Radio Step by Step (3). . . . . . . . . . . . . . . . . 32

The Lighter Side of DX. . . . . . . . . . . . . . . . 33

Prize-Winning Transmitter Has Worked All Continents. . 34

Choosing and Using a Vacuum-Tube Voltmeter. . . . . . . 36

More About the 6L6 Beam Power Amplifier. . . . . . . . 39

The AU-Wave All-World DX News. . . . . . . . . . . . . . 43

DX Champion Logs 600 Stations in Five Years. . . . . . . 44

"Card-Hunting" is Not Sole Aim of Dxing. . . . . . . . . 46

Identifying Shortwave Stations. . . . . . . . . . . . . . 47

Universal Time Conversion Indicator. . . . . . . . . . . . 48

DX Contest Arouses Widespread Interest. . . . . . . . . . 49

DX News and Views. . . . . . . . . . . . . . . . . . . 50

Logging South American Stations. . . . . . . . .. . . . . 51

Frequency Re-Shuffle For Japanese Broadcasters. . . . . . . . 52

Visiting DX Stations (3). . . . . . . . . . . . . . . . . . 53

China to have High-Power S.W. Station. . . . . . . . . . 55

All-Wave All-World DX Club-List of Members. . . . . . . . 56

1936 11
CONTENTS:

"Pick-Ups". . . . 3

Radiokes Factory Makes Thousands of Parts Weekly. . . . 4

Sydney Ambulances To Carry Radio. . . . 5

The Outdoor Portable. . . . 6

Hints And Tips For Set Designers. . . . 8

The Beginner's Battery Two. . . . 10

The Month On Shortwave. . . . 13

The Air-Ace Dual-Wave Five. . . . 14

What’s New In Radio. . . . 16

Newcastle Hamfest A Great Success. . . . 18

This Pentode Business. . . . 20

Acoustical Labyrinth In New Stromberg-Carlson Release. . . . 23

XMHD— A Popular Chinese Broadcaster. . . . 26

A Super-Regenerative Five-Metre Receiver. . . . 27

Radio Ramblings. . . . 30

Making A Reiss Microphone. . . . 32

Building An Output Meter. . . . 33

The A.T.R.S. Bulletin. . . . 35

The Cathode Ray Oscillograph At Work (3). . . . 36

All-Wave All-World DX News. . . . 39

Shortwave Stations Of The World (3). . . . 40

DX Doings On The Short Waves. . . . 43

VK Amateurs — Additions and Amendments. . . . 44

Shortwave Station Addresses. . . . 45

DX Notes and News. . . . 46

All-Wave All-World DX Club — List of Life Members. . . . 48

1936 12
CONTENTS:

Radio Gifts For Christmas. . . . 3

"Scout Battery Three". . . . 6

Radio Ramblings. . . . 10

High Quality Reproduction At Low Cost. . . . 14

New £50,000 Factory Planned By Ever-Ready. . . . 16

The "Scout Superhet Four". . . . 17

This Pentode Business (2). . . . 22

The Story Of Television (1). . . . 24

Radio Step By Step (5). . . . 26

Party Radio Magic. . . . 28

The Cathode Ray Oscillograph At Work (4). . . . 30

Radio In India. . . . 33

The A.T.R.S. Bulletin. . . . 34

What's New In Radio. . . . 36

Radio Book Reviews. . . . 37

Round The N.Z. "B" Stations. . . . 38

VK Amateur Stations — Additions And Amendments. . . . 40

All-Wave All-World DX News. . . . 41

Radio VK4DO Is Model Amateur Station. . . . 42

Schedules Of Japan's New Shortwave Service. . . . 42

Shortwave Stations Of The World (4). . . . 43

DX Notes And News. . . . 45

1937 02
CONTENTS:

Assembling And Wiring The "Fidelity Broadcast Five". . . . 3

Radio Ramblings. . . . 6

Building A Code Practice Oscillator. . . . 10

Radio Book Reviews. . . . 13

What's New In Radio. . . . 14

The A.T.R.S. Bulletin. . . . 16

Licensing Of Servicemen Urgently Needed. . . . 16

Nevi Series Of Articles On Amateur Radio. . . . 17

Breaking Into The Amateur Game. . . . 18

Learning The Code. . . . 20

"Getting Out" On Five Metres. . . . 23

First Radio Signal From U.S. Heard In 1923. . . . 25

5-Metre Push-Pull Oscillator. . . . 26

The Story Of Television (3). . . . 28

Hints And Tips For DX Beginners. . . . 30

The Lure Of DX Listening. . . . 32

Radio Step By Step (6). . . . 33

Background Hiss In Superhets. . . . 34

Five-Metre Enthusiasts Asked To Use Superhets. . . . 36

All-Wave All-World DX News. . . . 37

DX Report Forms Save Time And Ensure Replies. . . . 38

Preparing Reports In German And Italian. . . . 39

Times To Listen For World Shortwave Stations. . . . 40

The Month On Shortwave. . . . 41

DX News Flashes. . . . 42

DX Notes And News. . . . 43

VK Amateur Stations — Additions And Amendments. . . . 45

New Range Of Radiokes Power Transformers. . . . 46

World Shortwave Stations (6). . . . 47

W.I.A. Field Day. . . . 48

1937 03
CONTENTS:

The Story Of The Ever Ready Air Cell. . . . 3

Field Tests On First Air Cell Receivers. . . . 4

The Companionette Three. . . . 5

Fidelity Broadcast Five — Adding Bass Boosting. . . . 7

The A.T.R.S. Bulletin. . . . 8

Radio Ramblings. . . . 10

Building A Regenerative S.W. Pre-Selector Unit. . . . 14

Amateur Transmits From Bed In Hospital. . . . 18

Breaking Into The Amateur Game (2). . . . 20

The Story Of Television (4). . . . 24

Background Hiss In Superhets. . . . 26

Radio Step By Step (7). . . . 29

A Portable Line Amplifier. . . . 32

What's New In Radio. . . . 33

Radio Book Reviews. . . . 35

All-Wave All-World DX News. . . . 37

Round The N.Z. "B" Stations (2). . . . 38

Shortwave Stations Of The World (7). . . . 39

DX Notes And News. . . . 41

Manly Radio Club Notes. . . . 42

Some DX Highlights. . . . 43

Ham Jargon. . . . 44

VK Amateur Stations — Additions And Amendments. . . . 45

Big Five-Metre Field Day Planned for March 7. . . . 46

Leaves From A Dxer's Logbook. . . . 47

New Members All-Wave All-World DX Club. . . . 48

1937 04
CONTENTS:

When PCJ Was PCJJ. . . . 3

The 1937 International All-Wave Six. . . . 6

Radio Ramblings. . . . 10

B B.C. Television Signals Heard In Africa. . . . 14

DX Notes And News. . . . 16

Assembling And Wiring The Companionette Three. . . . 18

ZL Amateur Transmitters. . . . 21

A Two-Band Crystal Controlled Transmitter. . . . 29

Verifying All Continents. . . . 36

Breaking Into The Amateur Game. . . . 38

The A.T.R.S. Bulletin. . . . 39

Intermittent Faults Are Hardest To Locate. . . . 39

All-Wave All-World DX News. . . . 43

What's New In Radio. . . . 44

Leaves From A Dxer's Log-Book. . . . 45

"Radio World" Vol. 1 — Index To Technical Features. . . . 48

1937 05
CONTENTS:

"Radio World" Guide To The Show. . . . 3

The 1937 Empire All-Wave Three. . . . 6

Assembling, Wiring And Aligning The 1937 International All-Wave Six. . . . 10

Radio Ramblings. . . . 14

The Story Of Television (5). . . . 18

Breaking Into The Amateur Game. . . . 20

Keeping In Touch With Darwin. . . . 23

25 Years In Amateur Radio (1). . . . 24

Seven-Valve Dual-Waver Gives Excellent Results. . . . 26

Inverse Feedback Conquers "Pentode Tone"! . . . . 28

Image Frequency Interference On The Short Waves. . . . 30

Round The N.Z. "B" Stations (3). . . . 32

Latest Radiokes Tri-Colour Dial A Striking Success. . . . 35

The A.T.R.S. Bulletin. . . . 36

Radio Step By Step (8). . . . 38

"Keep Up The Good Work". . . . 40

All-Wave All-World DX News. . . . 41

All-Continent Hook-Up In 15 Minutes. . . . 42

Leaves From A Dxer's Log Book. . . . 43

DX Notes And News. . . . 45

North Suburban Radio Club News. . . . 47

What's New In Radio. . . . 48

1937 06
CONTENTS:

The Eaglet All- Wave Two. . . . 3

Communications Type Superhet For Amateurs. . . . 6

Radio Ramblings. . . . 10

Assembling And Wiring The 1937 Empire All-Wave Three. . . . 14

25 Years In Amateur Radio (2). . . . 18

World Shortwave Stations. . . . 21

Breaking Into the Amateur Game (5). . . . 29

Across The Atlantic On Five Metres. . . . 32

Radio Step By Step. . . . 34

What's New In Radio. . . . 35

All-Wave All-World DX Club — New Members. . . . 37

The A.T.R.S. Bulletin. . . . 38

Eliminating Man-Made Static. . . . 38

Locating And Curing Hum. . . . 39

The All-Wave All-World DX News. . . . 41

Shortwave Review. . . . 42

DX News And Views. . . . 45

VK Amateur Stations — Additions And Amendments. . . . 47

1937 07
CONTENTS:

The Amateur Communications Eight. . . . 3

Radio Ramblings. . . . 10

New Radio Installations Regulations. . . . 15

The Jones' Super-Gainer Two. . . . 16

25 Years In Amateur Radio (3). . . . 18

"Radio Aid" Explorers Track Down Noise. . . . 21

Designing Vibrator Type "B" Eliminators. . . . 22

Assembling And Wiring The 1937 Eaglet All-Wave Three. . . . 26

Radio Step By Step (10). . . . 27

The A.T.R.S. Bulletin. . . . 28

Breaking Into The Amateur Game (6). . . . 30

What's New In Radio. . . . 34

The All-Wave All-World DX News. . . . 37

Trans-Pacific DX On 10 Metres. . . . 38

Erecting 45-Foot Masts. . . . 40

Shortwave Review. . . . 41

DX News And Views. . . . 44

Climbing 6ME's 400-Foot Mast. . . . 48

1937 08
CONTENTS:

"Sky-King Dual-Wave Five". . . . 3

Ham Jargon. . . . 5

"Air-Cell Pentagrid Seven". . . . 6

"Fluttering On The Short Waves". . . . 8

Radio Ramblings. . . . 10

Trans-Tasman Reception With "Companionette". . . . 15

YL Radio Enthusiast Builds 15-Valve S.S. Super. . . . 16

High Fidelity Amplifier Uses Push-Pull 2A3's. . . . 18

Over 30,000 Miles Covered In Round Table Hook-Up. . . . 20

The "Jones' Super-Gainer Two". . . . 22

Breaking Into The Amateur Game. . . . 26

Home-Built Talkie Plant Gives Excellent Performance. . . . 29

Multi-Band Transmitter Uses Unique Assembly. . . . 30

The A.T.R.S. Bulletin. . . . 32

Tracking Down Distortion. . . . 32

What's New In Radio. . . . 34

New 5-Metre Records. . . . 36

25 Years In Amateur Radio (4). . . . 37

All-Wave All-World DX News. . . . 39

Shortwave Review. . . . 40

DX Contests Arouse Widespread Interest. . . . 42

DX News And Views. . . . 43

Round The Shacks (1). . . . 44

Round The N.Z. "B" Stations (4). . . . 45

Crown Radio Shift To Larger Factory. . . . 47

1937 10
CONTENTS:

The "1937 Outdoor Portable Four". . . . 3

Assembling And Wiring The "Tom Thumb Two". . . . 8

Latest Radiokes Kit-Set Is The "Advance 1937". . . . 10

Radio Ramblings. . . . 12

Radio Club Caters For Transmitters And S.W. Listeners. . . . 16

25 Years In Amateur Radio. . . . 18

VK Amateur Calls. . . . 21

A.C./D.C. Receiver Uses New Radiotron Barretter. . . . 32

Breaking Into The Amateur Game (9). . . . 34

Nine-Channel Ultra S. W. Radio Telephone Link. . . . 38

What's New In Radio. . . . 40

A.T.R.S. Institute — Queensland Branch. . . . 42

Radio Step By Step (11). . . . 44

All-Wave All-World DX News. . . . 45

Shortwave Review. . . . 46

DX News And Views. . . . 49

Zero Beat Radio Club Notes. . . . 50

Round The Shacks (3). . . . 51

Shortwave Station Addresses. . . . 52

1937 11
CONTENTS:

De Luxe Fidelity Eight. . . . 3

Valve Manufacture In Australia. . . . 8

Radio Ramblings. . . . 10

W.I.A. National Field Day On Dec. 4. . . . 13

Breaking Into The Amateur Game (10). . . . 14

Round The N.Z. "B" Stations (5). . . . 18

The 1937 Outdoor Portable Four. . . . 20

25 Years In Amateur Radio (7). . . . 24

Radio Step By Step (12). . . . 26

Improved Operating Conditions For 1C6 On Shortwave. . . . 28

What's New In Radio. . . . 32

New Adelaide Station Has Up-to-date Transmitter. . . . 36

The All-Wave All-World DX News. . . . 37

Shortwave Review. . . . 38

Second "Radio World" S. W. Contest. . . . 39

DX News And Views. . . . 41

Ten Thousand Miles On Five Metres. . . . 42

Radio Aids Flying Doctor In Outback. . . . 43

Round The Shacks (4). . . . 45

Shortwave Station Addresses. . . . 46

E. Neill Wins First S. W. DX Contest. . . . 47

VK Amateur Transmitters — Additions And Amendments. . . . 48

1937 12
CONTENTS:

The A.C. "Empire All-Wave Three". . . . 3

Tasman Crossed On "Five". . . . 7

Radio Ramblings. . . . 10

Battery Amateur Communications Superhet. . . . 12

A 15-Watt Public Address Amplifier. . . . 15

25 Years In Amateur Radio (8). . . . 18

Making A Reiss Microphone. . . . 20

15 And 25-Watt Public Address Amplifiers. . . . 22

Radio Step By Step (13). . . . 25

Assembling And Wiring The De Luxe Fidelity Eight. . . . 26

Round The Shacks (5). . . . 29

Fiftieth Transmitting Member Joins Lakemba. . . . 30

What's New In Radio. . . . 34

Breaking Into The Amateur Game (11). . . . 38

All-Wave All-World DX News. . . . 41

Shortwave Review. . . . 42

Shortwave Station Addresses. . . . 44

DX News And Views. . . . 45

VK Amateur Transmitters - Additions And Amendments. . . . 47

Level Indicator For Public Address Systems. . . . 48

1938 01
CONTENTS:

"Empire" Power Pack And Amplifier. . . . 3

1938 Contest For Best Amateur Telegraphist. . . . 8

Breaking Into The Amateur Game (12). . . . 10

Radio Ramblings. . . . 12

Radio Valves In The Making (1). . . . 14

Schedule Of PCJ Experimental Transmissions. . . . 16

Twenty-Five Years In Amateur Radio (9). . . . 18

World Shortwave Stations. . . . 19

Battery Amateur Communications Superhet. . . . 29

Eight-Valve T.R.F. Receiver Gives High Quality Output. . . . 36

National Field Day An Enjoyable Outing. . . . 38

What's New In Radio. . . . 41

All-Wave All-World DX News. . . . 43

Shortwave Review. . . . 44

DX News And Views. . . . 47

Australian Trained Radio Servicemen's Institute — Queensland Division. . . . 48

1938 02
CONTENTS:

The Fidelity Dual-Wave Six. . . . 3

New Ever Ready Factory Opened By Prime Minister. . . . 8

Radio Ramblings. . . . 10

More About The A.C. Empire All-Wave Three. . . . 14

Aden Amateur Station On The Air. . . . 16

Five Metres In S. Australia. . . . 18

VK2NO Advanced U.H.F. Receiver. . . . 19

Radio Valves In The Making (2). . . . 24

Radio Step By Step (14). . . . 27

Lavishly-Equipped Radio Service Workshop. . . . 29

What's New In Radio. . . . 32

Breaking- Into The Amateur Game (13). . . . 35

The All-Wave All-World DX News. . . . 37

Shortwave Review. . . . 38

Third S.W. DX Contest. . . . 41

Round Table QSO Smashes Previous Record. . . . 42

Around The Shacks (6). . . . 43

1937 Eventful Year For Shortwave Dxers. . . . 44

DX News And Views. . . . 47

1938 03
CONTENTS:

Two-Band Portable Transmitter-Receiver. . . . 3

Battery-Operated Portable Transmitter. . . . 10

Radio Ramblings. . . . 12

Japanese B.C. Stations. . . . 15

Sydney Dxer Logs Europe on B.C. Band. . . . 16

Assembling And Wiring the Fidelity Dual-Wave Six. . . . 18

Two-Valve A.C. Shortwaver Uses Coil-Switching. . . . 20

Radio Valves In The Making (3). . . . 24

A Triple-Range Valve Voltmeter. . . . 27

What’s New In Radio. . . . 30

Radio Step By Step (15). . . . 32

Two-Valve Local Station Superhet. . . . . 35

All-Wave All-World DX News. . . . 37

Shortwave Review. . . . 38

Round The Shacks (7). . . . 40

1938 Radio Handbook Now Available. . . . 43

Police Signals Heard 10,000 Miles. . . . 46

DX News And Views. . . . 47

Shortwave Station Addresses. . . . 48

1938 04
CONTENTS:

Comet Superhet Four. . . . 3

Crown Releases Push-Button Kit For Set-Builders. . . . 6

Portable Five-Metre Transceiver. . . . 9

Radiokes 1938 D.W. Moneysaver Superhet. . . . 14

Pre-Selector Unit Sharpens Tuning, Increases Gain. . . . 16

50-Watt Transmitter For New Power Limit. . . . 18

Infinite Baffle Aids Tonal Fidelity. . . . 20

Shortwave Aerials For DX Reception (1). . . . 23

"Eaglet" Gives Outstanding Performance. . . . 26

Building A Midget Three-Watt Amplifier. . . . 27

DX Contest Winner Has Logged Over 100 Countries. . . . 30

Tracking Down Power Interference (1). . . . 31

What's New In Radio. . . . 33

The All-Wave All-World DX News. . . . 37

Sun-spot Activity Now Approaching Maximum. . . . 38

Shortwave Review. . . . 39

Hourly Tuning Guide. . . . 42

Fourth "Radio World" S.W. DX Contest. . . . 46

Round The Shacks (8). . . . 46

DX News And Views. . . . 47

VK Amateur Transmitters — Additions And Amendments. . . . 47

Index Of Technical Features, "Radio World," Vol. 2. . . . 48

1938 05
CONTENTS:

The Air-cell Dual-wave Four. . . . 3

Radiokes Release New Range of Power Transformers. . . . 7

Radio Ramblings. . . . 8

The Comet Superhet Four. . . . 10

An Appreciation From A.T.R.S.I. .. . . 12

"Pirate" Uses Lakemba Club Call. . . . 14

The Triode And Its Applications. . . . 16

The Scout Battery Three. . . . 18

A Trip Through The Ever Ready Factory. . . . 22

Shortwave Aerials For DX Reception (2). . . . 27

Tracking Down Power Interference (2). . . . 30

What's New In Radio. . . . 34

A.O.C.P. Questions And Answers. . . . 39

All-Wave All-World DX News. . . . 41

Shortwave Review. . . . 42

DX Notes And News. . . . 45

Hourly Tuning Guide. . . . 47

1938 06
CONTENTS:

The "Auto-Tune Dual-Wave Five". . . . 3

Calstan Test Oscillator. . . . 5

Radio Ramblings. . . . 6

Radiokes Release Eight-Station Teletuner. . . . 10

More About The Air-Cell D.W. Four. . . . 11

Lakemba Club Holds Eighth Annual Reunion. . . . 14

32-Watt Amplifier Uses 6L6G's In Pushpull. . . . 18

A.O.C.P. Questions And Answers. . . . 20

World Shortwave Stations. . . . 22

Tracking Down Power Interference (3). . . . 28

Round The Shacks (8). . . . 32

What's New In Radio. . . . 33

All-Wave All-World DX News. . . . 39

Shortwave Review. . . . 40

Hourly Tuning Guide. . . . 43

American Radio Police Calls. . . . 44

Fourth S.W. DX Contest. . . . 45

DX News And Views. . . . 46

Ex-Fingerprint Expert Conducts PCJ Session. . . . 47

1938 07
CONTENTS:

The "Auto-Tune Dual-Wave Five". . . . 3

Model "Q" Console Is Latest S.T.C. Release. . . . 10

Four-Watt Beam Amplifier. . . . 11

Home Recording For The Amateur. . . . 14

Amateur Station Equipment (1) — Monitor And Modulation Meter. . . . 18

World Shortwave Stations. . . . 23

A.O.C.P. Questions And Answers. . . . 27

Pentode And Beam Tetrode Valves. . . . 29

200 Visitors Inspect Philips Valve Works. . . . 31

What's New In Radio. . . . 32

Palec "VCT" Valve And Circuit Tester. . . . 35

The All-Wave All-World DX News. . . . 37

Shortwave Review. . . . 38

Hourly Tuning Guide. . . . 41

Official Australian Radio Service Manual. . . . 45

DX News And Views. . . . 46

"1938 De Luxe Fidelity Eight". . . . 47

International Amateur Prefixes. . . . 48

1938 09
CONTENTS:

"Atlas All-Waver". . . . 3

Brimar Releases New 6AG6-G Output Pentode. . . . 8

Rectifiers, Filters, And Hum. . . . 10

Radio Ramblings. . . . 12

The "Challenger Dual-Wave Six". . . . 16

The "Ultra-Shorts" In Review. . . . 17

A.O.C.P. Questions And Answers. . . . 21

High Fidelity Reception Of Local Stations. . . . 24

Radio Reminiscences. . . . 27

The "1938 De Luxe Fidelity Eight". . . . 28

The "Trans-Tasman U.H.F. Two". . . . 30

What's New In Radio. . . . 32

Lectures On Oscillograph And Home Recording. . . . 35

"Empire" Power-Pack Wiring Plan. . . . 37

Philips Photo Cell Has Many Applications. . . . 38

Assembling And Wiring The "Air-Ace Communications Four". . . . 39

"Vibra Dual- Wave Five". . . . 44

Shortwave Review. . . . 45

1938 10
CONTENTS:

"1938 Amateur Communications Eight". . . . 3

"1938 Outdoor Portable Four". . . . 6

Adding A Tuned R.F. Stage To The "Atlas All-Waver". . . . 10

Portable Transmitter Taken On Radio Hike. . . . 12

EMI Makes Good Indicator For Absorption Frequency Meter. . . . 15

A.O.C.P. Questions And Answers. . . . 17

The Ultra-Searcher. . . . 20

Radio Book Reviews. . . . 22

Contest Winner VK2ADE Operates De Luxe Station. . . . 24

The "Ultra-Shorts" In Review (2). . . . 25

Getting That Trophy-Winning "Verie". . . . 28

1.4-Volt Valves Announced In States. . . . 30

What's New In Radio. . . . 32

Building The A.C. Version Of The "Air-Ace Communications Four". . . . 36

All-Wave All-World DX News. . . . 39

Shortwave Review. . . . 40

Hourly Tuning Guide. . . . 44

Result Of Fifth DX Contest. . . . 45

O. Washfold Wins QSL Card Contest. . . . 47

1938 11
CONTENTS:

Nineteen Range Combination Vacuum Tube Voltmeter And Multi-meter. . . . 3

17-Watt Amplifier Uses Push-Pull 6L6G's. . . . 8

Adding A Pentode Stage To The Atlas All-Waver. . . . 10

Aerial Beacon Erected On Ever Ready Building. . . . 12

Planning Radio Set Sensitivity. . . . 14

New Perth Transmitter Now On Air. . . . 16

Assembling And Wiring The 1938 Amateur Communications Eight. . . . 17

Assembling And Wiring The 1938 Outdoor Portable Four. . . . 21

CFGP Is British Empire's Most Northern Station. . . . 29

The "Ultra-Shorts" In Review. . . . 30

Coil-Winding Data For Philips EK2G Octode. . . . 31

Unique Home Recording Demonstration. . . . 32

What's New In Radio. . . . 34

Radio Book Reviews. . . . 36

All-Wave All-World DX News. . . . 37

Shortwave Review. . . . 38

Hourly Tuning Guide. . . . 43

DX News And Views. . . . 45

1938 12
CONTENTS:

The "Sky-King Dual-Wave Five". . . . 3

Resistance And Capacity Checker. . . . 6

Tasma 1.4-Volt Valve Receiver Gives Outstanding Results. . . . 7

More About The 5-Metre Super-Gainer. . . . 10

"Hi-Fi" Speaker Baffle. . . . 12

Radio For Bush Search Parties. . . . 14

Waverley And Hurstville Radio Club Notes. . . . 16

Improved Performance From 6K8G Converter. . . . 17

Home Recording (1). . . . 21

World Shortwave Stations. . . . 23

5-Band 10- To 160-Metre 'Phone And C.W. Transmitter. . . . 29

What's New In Radio. . . . 34

All-Wave All-World DX News. . . . 41

Shortwave Review. . . . 42

Hourly Tuning Guide. . . . 46

5- And 10-Metre Transmitter Next Month. . . . 48

1939 01
CONTENTS:

Queensland Demonstration Of New 1.4-Volt Valve Receiver. . . . 1

1.4-Volt Valves Ideal F or Country And Portable Radios. . . . 3

Rola Reproducers F or New 1.4-Volt Valves. . . . 8

Special Ever-Ready Cell For 1.4-Volt Valves. . . . 9

The "One-Four Portable Five". . . . 10

"1939 Sky-King Dual-Wave Five". . . . 18

Planning Receiver Selectivity. . . . 21

World Shortwave Stations. . . . 23

Home Recording (2). . . . 30

National Field Day Outing. . . . 32

What’s New In Radio. . . . 34

Radio Book Reviews. . . . 35

Resistance And Capacity Checker. . . . 37

The All-Wave All-World DX News. . . . 39

Shortwave Review. . . . 40

Hourly Tuning Guide. . . . 45

Readers Invited To Join Australian Corps Of Signals. . . . 47

1939 02
CONTENTS:

5- And 10-Metre 'Phone And C.W. C.C. Transmitter. . . . 3

Palec Primary Frequency Standard. . . . 10

Radio Ramblings. . . . 13

Building A Field Strength Meter. . . . 14

Assembling And Aligning The "One-Four Portable Five". . . . 18

Home Recording (3). . . . 21

Photographing Heart Beats. . . . 24

The D.B.K. 9- To 1000-Metre Communications Receiver. . . . 26

DX On The "Ultra-Highs". . . . 29

Rola Gesture To Bush Fire Sufferers. . . . 32

What’s New In Radio. . . . 33

Vibrator Unit : Trans-Tasman P.B. Five. . . . 36

The All-Wave All-World DX News. . . . 37

Shortwave Review. . . . 38

Hourly Tuning Guide. . . . 45

1939 03
CONTENTS:

5- And 10-Metre Phone and C.W. Transmitter. . . . 3

Stromberg-Carlson 1939 Dealers' Conference. . . . 6

Public Address Outfit Uses New Projection Unit. . . . 8

"One-Four Portable Five" On Test. . . . 9

The "Trans-Tasman All-Wave P.B. Five". . . . 10

Radio Aids The Outback. . . . 13

Hurstville Radio Club Notes. . . . 16

Building A Pocket Multi-Meter. . . . 17

Building A Code Practice Oscillator. . . . 22

Learning The Code. . . . 23

How Dry Batteries Are Made. . . . 24

Acoustic Filter In Latest Rola Units. . . . 26

The 2NO Amateur Band Superhet. . . . 29

The Universal Receiver. . . . 31

What's New In Radio. . . . 35

All-Wave All-World DX News. . . . 37

Shortwave Review. . . . 38

Hourly Tuning Guide. . . . 45

All-Wave All-World DX Club — New Members. . . . 47

DX Alphabet — Phonetic Pronunciations. . . . 48

1939 04
CONTENTS:

How To Make Home Recordings. . . . 3

Standardised Components For Set-Builders. . . . 6

Important New Rola Patent. . . . 7

160 Miles On Five Metres. . . . 8

Club Contests In Full Swing. . . . 10

"Sky-Hawk All-Wave Three". . . . 12

This Thing Called "Q". . . . 18

15 To 600-Metre Marine Receiver. . . . 22

The Velco 1939 Mastery Battery Five. . . . 27

Modern Trends In Set Design. . . . 32

What’s New In Radio. . . . 35

Leaves From A Serviceman’s Diary. . . . 37

"Find-The-Fault" Contest For Readers. . . . 38

Shortwave Editor Tests DX Champion Receiver. . . . 40

Shortwave Review. . . . 42

Hundreds Of Constructional Items In Back Issues — Special Offer To Readers. . . . 47

1939 05
CONTENTS:

The Astra Dual-Wave Six. . . . 3

Lakemba Radio Club Reunion. . . . 10

1939 Companionette Three. . . . 12

Radio Ramblings. . . . 15

Find-The-Fault Contest. . . . 16

Hear The World On Tiny Tim. . . . 18

Keep Charging! . . . . 21

Experimenters — Get Down To "Ultra-Shorts". . . . 22

Leaves From A Serviceman’s Diary (2). . . . 24

Installing An Extension Speaker. . . . 26

One-Four Portable On 100-Mile Canoe Trip. . . . 30

The Ultra DX Three. . . . 32

What's New In Radio. . . . 38

1939 Australian Official Radio Service Manual. . . . 40

The All-Wave All-World DX News. . . . 41

Shortwave Review. . . . 42

Hourly Tuning Guide. . . . 46

Rola "Permacentric" Construction. . . . 48

1939 06
CONTENTS:

The "Astra Dual-Wave Six". . . . 3

The "Ultra DX Three". . . . 6

New Ever Ready Batteries For 1.4-Volt Portables. . . . 8

Fight For Amateur Bands. . . . 10

Simple Portable Aerial. . . . 11

This Thing Called "Q". . . . 12

More About The 1939 Companionette Three. . . . 15

A Portable Valve Checker. . . . 17

More Sets From Back Numbers. . . . 21

A.O.C.P. Questions And Answers. . . . 22

Experimenters - Get Down To Ultra Shorts. . . . 24

Installing An Extension Speaker. . . . 26

A Test-Bench Multi-Vibrator. . . . 28

Making A Reiss Microphone. . . . 31

Leaves From A Serviceman's Diary (3). . . . 32

The Economy Fidelity Amplifier. . . . 33

What's New In Radio. . . . 36

Shortwave Review. . . . 41

Hourly Tuning Guide. . . . 46

1939 07-08
CONTENTS:

Field Test On New S.T.C. Portable. . . . 3

"Sky-Chief Dual-Wave Five". . . . 5

Outstanding Performance From "Our-Four" Portable. . . . 6

Indicator Lights For Radiogram. . . . 9

1939 Atlas All-Wave Three. . . . 10

Economy Fidelity Amplifier. . . . 13

Over 50 Entries For "Find-The-Fault" Contest. . . . 15

Bush Radio Rescue Test. . . . 19

Portables On Parade. . . . 21

Leaves From A Serviceman's Diary (4). . . . 28

The Cathode Ray Oscillograph (l). . . . 29

160 Miles On Five Metres. . . . 32

What's New In Radio. . . . 33

Three New Six-Inch Rola Models: Ideal For Portables. . . . 37

Sixth S.W. D.W. Contest. . . . 38

Shortwave Review. . . . 39

Hourly Tuning Guide. . . . 46

1939 09
CONTENTS:

The Falcon Dual-Wave Four. . . . 3

Six-Band Frequency Meter. . . . 7

Latest Model Ultimate On Test. . . . 8

Wiring And Aligning The Sky-Chief Dual-Wave Five. . . . 10

The Cathode Ray Oscillograph (2). . . . 12

Portable Gear For Bush Radio Tests. . . . 18

Radio Ramblings. . . . 20

Australian Broadcasting Stations. . . . 23

High-Gain Antenna For The Ultra-Highs. . . . 27

1939 Atlas All-Wave Three. . . . 29

Jottings From Readers. . . . 30

Leaves From A Serviceman's Diary. . . . 31

What's New In Radio. . . . 33

Shortwave Review. . . . 39

Hourly Tuning Guide. . . . 45

1939 10
CONTENTS:

Picnic Portable Four. . . . 3

Vulcan Shortwaver. . . . 7

£40,000 S.T.C. Air Raid Shelter. . . . 7

New Era For Battery Radio. . . . 9

War News On The Short Waves. . . . 10

Learn The Morse Code. . . . 11

What's New In Radio. . . . 16

Falcon Dual-Wave Four. . . . 17

Testing Transformer Windings. . . . 18

World Shortwave Stations. . . . 19

1.4-Volt Shortwave Superhet. . . . 24

13.5 Watts From 2A3's In Push-pull. . . . 27

Sixth DX Contest Winner Relates His Experiences. . . . 31

Latest Loggings On Shortwave. . . . 33

Broadcast Band DX Notes. . . . 37

1939 11
CONTENTS:

Fisk Radiola Portable Five. . . . 3

Two Communications "Supers." . . . . 5

Radio Club Notes and News. . . . 8

The Picnic Portable Four. . . . 9

Needle Pointers For Record Users. . . . 15

Leaves From A Serviceman's Diary (6). . . . 18

Shortwave. And All-Wave Receivers From Back Numbers. . . . 20

Meters For A.G. And D.C. Measurements. . . . 22

What's New In Radio. . . . 26

Brown Projection Unit Popular With Public Address Operatives. . . . 28

Three New S.T.C. Releases. . . . 29

A Hint For Smoother Reaction. . . . 30

Shortwave Review. . . . 31

Broadcast Band DX Notes. . . . 36

Broadcast Band DX Contest. . . . 37

Radio In The Outback. . . . 38

All-Wave All-World DX Club-New Members. . . . 40

1939 12
CONTENTS:

Loop Portable Three. . . . 3

The Story of R.C.S. Radio (1). . . . 6

R.C.S. Releases Five-Band Coil Assembly. . . . 8

Mullard World-Master Consolette Gives Outstanding Performance. . . . 10

Junior Class "B" Amplifier. . . . 13

Air-Scout Communications Six. . . . 15

Service Equipment (2). . . . 18

Beam-A-Scope Noise-Killer Aerial. . . . 23

The Vulcan Shortwaver. . . . 26

What's New In Radio. . . . 27

Two New Amplion Speakers. . . . 31

Shortwave Review. . . . 32

"Radio World" All-Wave Oscillator. . . . 37

1940 01
CONTENTS:

The Daventry Dual-Waver. . . . 3

The Story Of R.C.S. Radio (2). . . . 6

Five-Band Communications Superhet. . . . 8

Service Equipment (3). . . . 10

Vulcan Pre-Selector Unit. . . . 13

Choosing A Microphone. . . . 15

"Radio World" All-Wave Oscillator. . . . 17

Waverley Radio Club Notes. . . . 25

What's New In Radio. . . . 26

New Headquarters For Marconi School. . . . 28

"Communications Eight" A Fine Performer. . . . 30

Shortwave Review. . . . 31

Broadcast Band DX Notes. . . . 37

1940 02
CONTENTS:

New A.C.-Battery "Duo" Portable. . . . 3

Book Reviews. . . . 4

1940 Companionette Three. . . . 5

Modulated Oscillators. . . . 9

Midget Three-Watt Amplifier. . . . 11

World-Cruiser Communications Eight. . . . 13

The Story of R.C.S. Radio (3). . . . 27

What's New In Radio. . . . 29

Long-Horn Public Address Speakers. . . . 31

Shortwave Review. . . . 33

1940 03
CONTENTS:

CONSTRUCTIONAL

"Wonder One," 5-band, 1-valve. . . . 23

"Dandy," 3-valve a.c. superhet. . . . . 13

"World Standard for 1940". . . . 3

GENERAL TECHNICAL

U.S. Circuits for the 1940-41 Season. . . . 9

Country Set Circuit Design. . . . 19

A Group Trainer for Morse Code. . . . 11

TEST EQUIPMENT

Laboratory Service for Readers. . . . 20

Testing Radio Components. . . . 33

The Output Meter. . . . 21

SHORT WAVE SECTION

The Month's Loggings. . . . 30

Station Schedules and Changes. . . . 29

Ultra-High-Frequency Notes. . . . 32

JUNIOR TECHNICAL

The Workshop Bench. . . . 36

Care of Tools. . . . 37

TRADE NOTES

"Delta" Test Equipment. . . . 35

Radio Art Union. . . . 35

SPEEDY QUERY SERVICE

Answers to Readers' Problems. . . . 39

1940 04
CONTENTS:

CONSTRUCTIONAL

"Junior" Short-wove Converter. . . . 3

"Bedsider" 2-valve Battery T.r.f. .. . . 7

" R.E." Portable Kit-set. . . . 16

"Scout" Battery-operated T.r.f. .. . . 38

" R.C.S. Version of the Picnic Portable . . . . 14

GENERAL ARTICLES

Letters to the Editor. . . . 13

Radio Saves the Fruit Crop. . . . 13

Air-Test No. 1. . . . 37

Hints and Tips. . . . 42

TEST EQUIPMENT

Valve and Circuit Testers. . . . 9

Laboratory Service for Readers. . . . 43

SHORT-WAVE SECTION

The Month's Loggings. . . . 34

Station Schedules and Changes. . . . 33

Special Notice to DX Club Members. . . . 36

AMPLIFIER SECTION

Amplifiers for Home Use. . . . 17

Amplifier Championship. . . . 19

"Baby Grand" Amplifier. . . . 21

"Big Boy" Power Amplifier. . . . 29

"Fundamental" Power Supply. . . . 25

JUNIOR TECHNICAL

Soldering. . . . 44

Novel Wet Cell. . . . 45

TRADE NOTES

Amplifier Equipment. . . . 20

Morse Code Kit. . . . 42

SPEEDY QUERY SERVICE

Answers to Readers' Problems. . . . 47

1940 05
CONTENTS:

CONSTRUCTIONAL -

"De-Luxe Fidelity 8". . . . 3

"12-Volve Super Set". . . . 9

"Mystery Dual-waver". . . . 15

"Vibra" P.A. Amplifier. . . . 18

"Junior" S. W. Converter for Batteries. . . . 37

GENERAL TECHNICAL -

Crystal circuits. . . . 34

Modest Kitsets. . . . 35

Headache Corner. . . . 17

The Sniper Post. . . . 13

Gang's All Here. . . . 40

Valve Characteristics. . . . 43

AMPLIFIER SECTION

Diphonic Reproducers. . . . 26

Further Notes on Fidelity. . . . 21

AMPLIFIER CHAMPIONSHIP. . . . 24

SHORT-WAVE SECTION

Review. . . . 29

The Month's Loggings. . . . 30

The DX Club. . . . 33

JUNIOR TECHNICAL

Twist Drills. . . . 44

Amplifier Hints. . . . 45

Hints and Tips. . . . 42

Handy Saw. . . . 44

TRADE NOTES

Rola Expands. . . . 15

Murdoch's Kitsets. . . . 35

Philips Valves. . . . 41

Telsen Two-range Meters. . . . 42

Mullard Booklet. . . . 43

SPEEDY QUERY SERVICE

Answers to Readers' Problems. . . . 47

1940 06
CONTENTS:

CONSTRUCTIONAL -

"Fidelity Six". . . . 3

"Mystery Dual-Waver". . . . 17

"Vibra Fidelity Amplifier". . . . 21

"War News Booster Unit". . . . 35

GENERAL TECHNICAL -

"Old Reliable". . . . 9

Set Building as a Hobby. . . . 11

AMPLIFIER SECTION -

Fidelity Amplifier for Country Home. . . . 21

Amplifier Championship. . . . 23

Elimination of Distortion. . . . 27

SHORT-WAVE SECTION -

From Ill-fated Oslo. . . . 14

Hour by Hour Tuning Guide for War News. . . . 24

Review. . . . 29

The Month's Loggings. . . . 30

Short-Wave Tuning Guide. . . . 32

JUNIOR TECHNICAL -

Hints and Tips. . . . 42

Earthing the Receiver. . . . 44

Soldering Practice. . . . 45

TRADE NOTES -

Free Price List. . . . 42

New Radiokes Company. . . . 43

SPEEDY QUERY SERVICE -

Answers to Readers' Problems. . . . 47

1940 07
CONTENTS:

CONSTRUCTIONAL —

"Tip-Top Three-Four Superhet". . . . 5

Standard A.C. Power Unit. . . . 19

Two Novel Circuits From America. . . . 25

GENERAL TECHNICAL —

Battery Chargers. . . . 11

Using An R.F. Oscillator. . . . 15

Rola Introduces "Kappa" Cones. . . . 35

AMPLIFIER SECTION —

Amplifier Championship. . . . 22

SHORT-WAVE SECTION —

Review. . . . 28

The Month's Loggings. . . . 30

JUNIOR TECHNICAL —

Hints and Tips. . . . 37

Building a Galvanometer. . . . 38

TRADE NOTES —

W. G. Watson Release 1940 Test Equipment. . . . 40

Meter Repairs. . . . 40

Free Resistor De-coder. . . . 40

Bargain Lines at Murdock's Radio Sale. . . . 42

SPEEDY QUERY SERVICE —

Answers to Readers' Problems. . . . 41

1940 08
CONTENTS:

CONSTRUCTIONAL —

American-Style Communications Nine. . . . 5

Direct-Coupled Circuits. . . . 15

A Novel Power Unit. . . . 20

GENERAL TECHNICAL —

The A.B.C. of Multi-Range Meter Design. . . . 29

Aerials for Better Reception. . . . 38

AMPLIFIER SECTION —

Amplifier Championship. . . . 23

SHORT-WAVE SECTION —

Review. . . . 31

Loggings. . . . 32

Short-wave Broadcast Station List. . . . 34

JUNIOR TECHNICAL —

Hints and Tips. . . . 40

A Simple Electric Motor. . . . 42

J.T. Queries. . . . 43

Cutting Threads with Dies and Taps. . . . 43

TRADE PARADE —

Air Test of Latest Breville Receiver. . . . 19

Bargains from Invincible Radio. . . . 27

Vealls 1940 Catalogue. . . . 27

New Philips Valve Chart. . . . 27

SPEEDY QUERY SERVICE —

Answers to Readers' Problems. . . . 45

1940 09
CONTENTS:

CONSTRUCTIONAL —

The Winning Amplifier. . . . 11

American-Style Communications Nine. . . . 15

Star Battery D/W Five. . . . 17

Velco Crystal Set. . . . 41

AMPLIFIER SECTION —

Amplifier Contest. . . . 5

SHORT-WAVE SECTION —

Review. . . . 30

Help Wanted. . . . 31

Loggings. . . . 32

JUNIOR TECHNICAL —

How to Build a Morse Key. . . . 42

J. T. Queries. . . . 43

Random Jottings. . . . 43

TRADE PARADE —

Air Test of New Stromberg-Carlson Portable. . . . 28

Latest Radiola Model No. 282. . . . 38

New Rola 5-9. . . . 40

Free Catalogue From U.R.D. .. . . 40

Morse Sets From John Martin. . . . 40

Radio Book Review. . . . 40

SPEEDY QUERY SERVICE —

Answers to Readers' Problems. . . . 45

1940 10
CONTENTS:

CONSTRUCTIONAL —

Reinortz Three. . . . 5

Itsy-Bitsy Mantel Model. . . . 13

Velco Hi-Fidelity Five. . . . 17

TECHNICAL —

Problems With 1.4 Valves. . . . 11

Oscillator Grid Currents. . . . 25

Intermediate Transformers. . . . 27

Don'ts for Battery Charging. . . . 38

SHORT-WAVE SECTION —

Review. . . . 30

Radio Engineer from Japan. . . . 30

The Month's Loggings. . . . 32

TRADE PARADE —

Calstan Portable Reviewed. . . . 28

Ultimate "World-wave" Model. . . . 29

New Trimmers for R.C.S. .. . . 36

Book Reviews. . . . 42

SPEEDY QUERY SERVICE —

Answers to Readers' Problems. . . . 41

1940 11
CONTENTS:

CONSTRUCTIONAL —

Trans-Port. . . . 5

Straight Four. . . . 13

All-wave Oscillator. . . . 19

Criterion Crystal Set. . . . 24

TECHNICAL —

Direct-coupled Phase-changers. . . . 9

Further Championship Circuits. . . . 12

How to Use a Morse Key. . . . 25

H.T. from Accumulator. . . . 27

SHORT-WAVE SECTION —

Review. . . . 29

This Month's Loggings. . . . 30

Short-wave Stations of the World. . . . 33

TRADE PARADE —

Mardel Fan. . . . 38

Newcomer to Delta Range. . . . 38

Morse Combination Units. . . . 38

Expansion at John Martin's. . . . 39

New Dials by Radiokes Pty. Ltd. .. . . 39

Transverse Cutting Gear. . . . 39

Power Rheostats by I.R.C. .. . . 39

A.W.A. Modulated Oscillator. . . . 39

SPEEDY QUERY SERVICE —

Answers to Readers' Problems. . . . 41

1940 12
CONTENTS:

CONSTRUCTIONAL —

D.W. 13/42. . . . 5

Xmas Portable. . . . 7

Tip Top Superhet. . . . 11

Tone Corrector. . . . 30

TECHNICAL —

Speaker Transformers. . . . 15

Dial Tracking. . . . 16

Loud-Speaker Impedances. . . . 18

SHORT-WAVE SECTION —

Short-wave Review. . . . 20

War News Around the Clock. . . . 22

This Month's Loggings. . . . 24

New Members of All-Wave All-World DX Club. . . . 28

TRADE PARADE —

Raymart Range at John Martin's. . . . 29

Kiddies' Xmas Gifts. . . . 29

Special Service at Davis Radio Co. .. . . 29

"Exporters". . . . 29

City Store's Many Years in Radio. . . . 29

SPEEDY QUERY SERVICE —

Answers to Readers' Problems. . . . 33

1941 01
CONTENTS:

CONSTRUCTIONAL —

Countryman's Six. . . . 5

Xmas Portable. . . . 23

Push-Pull Proposition. . . . 43

GENERAL TECHNICAL —

Scott Communications Receiver. . . . 13

How to Use the "Radio World" A. W. Oscillator. . . . 17

An Interesting Circuit from Western Australia. . . . 20

The "Lilley" Amplifier. . . . 29

The 1940 Circuits. . . . 30

Dobson's Amplifier. . . . 41

A Novelty Set. . . . 51

New Laboratory Service. . . . 55

TRADE PARADE —

Latest Kriesler Release. . . . 49

Two Attractive Receivers from S.T.C. .. . . 53

Fan Disc Locking Washers Now Available. . . . 54

City Store's Entry into Manufacturing Trade. . . . 54

Spitfire Dial. . . . 54

New Philips Valve Booklet. . . . 54

SHORT-WAVE SECTION —

Review. . . . 32

Loggings. . . . 35

SPEEDY QUERY SERVICE —

Answers to Readers' Problems. . . . 57

1941 02
CONTENTS:

CONSTRUCTIONAL —

The Club Special. . . . 11

Local-Tone Four. . . . 13

The Standard Crystal Set. . . . 30

GENERAL TECHNICAL —

Compensated Acoustics. . . . 5

TRADE PARADE —

Counter Checkers. . . . 29

Two Mullard Portables. . . . 28

Free Foxradio Order Pads. . . . 28

Mullard Valve Chart Reprinted. . . . 28

SHORT-WAVE SECTION —

Loggings. . . . 18

SPEEDY QUERY SERVICE —

Answers to Readers' Problems. . . . 33

1941 03
CONTENTS:

CONSTRUCTIONAL —

The Club Special. . . . 5

Acoustic Compensated Superhet. . . . 25

GENERAL TECHNICAL —

Compensated Acoustics. . . . 15

Code Practice Oscillator. . . . 40

Radio Tools. . . . 45

TRADE PARADE —

Radiola Review. . . . 41

New Lines from Levenson's. . . . 42

Parts Required? . . . . 42

Paramount Review. . . . 47

SHORT-WAVE SECTION —

Review. . . . 32

Loggings. . . . 34

SPEEDY QUERY SERVICE —

Answers to Readers' Problems. . . . 49

1941 05
CONTENTS:

CONSTRUCTIONAL —

"All-World Two". . . . 5

Code Oscillator for A.C. .. . . 9

Build a "Servi-Meter". . . . 15

Crown "C.R.P." Six. . . . 30

"Porto-Gram" Amplifier. . . . 39

TECHNICAL —

Simple Volume Expansion. . . . 10

Correct Field Excitation. . . . 36

SHORT-WAVE SECTION —

Notes by L. J. Keast. . . . 42

Loggings of the Month. . . . 44

New Stations. . . . 44

New Schedules for London. . . . 47

SERVICEMEN'S SECTION —

Build a "Servi-Meter". . . . 15

Systematic Servicing. . . . 19

New Oscillograph by Paton. . . . 19

Vibrator High-tension Units. . . . 24

Valve Chart Available. . . . 28

Dealer Proposition. . . . 34

Correct Field Excitation. . . . 36

Alignment of Permotune Units. . . . 37

Trade Parade. . . . 49

SPEEDY QUERY SERVICE —

Answers to Readers' Problems. . . . 50

1941 07
CONTENTS:

CONSTRUCTIONAL —

"Vibra 4" for Countryman. . . . 5

5-Band Modulated Oscillator. . . . 11

Thirteen-watt Amplifier. . . . 15

Power Oscillator. . . . 29

TECHNICAL —

How to Use an Oscillator. . . . 32

Modern Sound for Modern Hotels. . . . 33

Speedy Query Service. . . . 34

SHORT-WAVE SECTIONS —

Conditions Affecting Reception. . . . 20

Short-wave Review. . . . 23

Loggings of the Month. . . . 24

1941 08
CONTENTS:

CONSTRUCTIONAL —

"Trade Builder Five" Mantel Model. . . . 5

All-wave One-valve Receiver. . . . 19

The Crystal Circuit to End All Crystal Circuits. . . . 32

Amplifier for Fidelity at Low Volumes. . . . 19

Pre-amplifier Circuit for Microphones. . . . 31

TECHNICAL —

Curing Instability in Modern Superheterodynes. . . . 15

Attaining High Speed at the Morse Code. . . . 13

What Is "Radio Location"? . . . . 30

Free Technical Data Chart Offer. . . . 38

Analysing Push-pull Output Circuits. . . . 33

SHORT-WAVE SECTION —

Loggings of the Month. . . . 24

Short-wave Review. . . . 22

New Members of the DX Club. . . . 34

TRADE SECTION —

New "Westex" Cabinets. . . . 35

Philips' 50 Years of Progress. . . . 35

Mullard Mantel Models Reviewed. . . . 29

Ultimate Catalogue Issued. . . . 37

1941 09
CONTENTS:

CONSTRUCTIONAL —

Signal Tracer for Servicemen. . . . 5

Simplest Five-Valver. . . . 11

"Vibra Four" as "Trade Builder". . . . 29

TECHNICAL —

Balance Conditions in Push-pull Output. . . . 30

Technical Queries. . . . 38

SHORT-WAVE SECTION —

Questions They Ask the B.B.C. .. . . 17

Short-wave Review. . . . 22

Logging of the Month. . . . 24

1941 10
CONTENTS:

CONSTRUCTIONAL —

1941 "Dandy". . . . 7

Radiotronics Tone-Control Amplifier. . . . 13

Five-way Tone-Control Switch. . . . 30

TECHNICAL —

Battery Circuit Contest. . . . 5

Stability by Neutralisation. . . . 6

A Technical Explanation of Loading. . . . 9

A Fidelity Circuit from U.S.A. .. . . 10

Technical Queries. . . . 33

SHORT-WAVE SECTION —

Short-wave Review. . . . 18

Loggings of the Month. . . . 20

1941 11
CONTENTS:

CONSTRUCTIONAL —

Inter-office Communicator. . . . 5

Dual-wave Vibrator Set. . . . 7

"Nugget" Dual-waver. . . . 11

Handy 12-watt Amplifier. . . . 11

Elementary Signal Tracer. . . . 19

TECHNICAL —

Interesting Experiments with Amplifiers. . . . 21

How to Use Your Oscilloscope. . . . 23

Beat Frequency Oscillator. . . . 26

Answers to Queries. . . . 37

SHORT-WAVE SECTION —

Why They Change the B.B.C. Wavelengths. . . . 20

Notes from My Diary, by L. J. Keast. . . . 28

Loggings of the Month. . . . 30

Battery Circuit Contest Coupon. . . . 37

1941 12
CONTENTS:

CONSTRUCTIONAL —

Acoustic Compensated Superhet. . . . 5

"My Own" Fidelity Receiver for Locals. . . . 11

A Medium-cost Signal Tracer. . . . 17

1942 Version of "Tip-Top". . . . 21

TECHNICAL —

Powerful Battery Set Circuit. . . . 15

The Meaning of Condenser Ratings. . . . 27

Answers to Queries. . . . 41

SHORT-WAVE SECTION —

Notes from My Diary, by L. J. Keast. . . . 30

Loggings of the Month. . . . 32

New Stations. . . . 36

TRADE NEWS —

Rothermel-Brush Pickups. . . . 24

New Amplion Speaker. . . . 14

1942 01
CONTENTS:

CONSTRUCTIONAL -

Signal Tracer for Battery Operation. . . . 13

Countryman's Seven-valve Dual-waver. . . . 23

A Portable Battery Circuit. . . . 9

Renovating Radio Cabinets. . . . 10

TECHNICAL -

Direct-coupled Phase-changers. . . . 5

Five-way Tone Control. . . . 12

Fundamentals of the C.R.O. .. . . 15

Some Battery Set Considerations. . . . 20

SHORT-WAVE SECTION -

Notes from My Diary. . . . 24

Loggings of the Month. . . . 26

New Stations Heard. . . . 25

THE SERVICE PAGE -

Answers to Queries. . . . 34

Battery Circuit Contest Results. . . . 11

1942 02
CONTENTS:

CONSTRUCTIONAL -

Tried and Tested One-valver. . . . 5

Detector Unit for Amplifiers. . . . 17

Re-building Radio Batteries. . . . 19

Alternative Bias Amplifier. . . . 21

TECHNICAL -

Victorian Champion Amplifier. . . . 9

Two Effective Battery Circuits. . . . 11

Baffling the Loud-speaker. . . . 14

Crystals for Frequency Control. . . . 16

The Reduction of Harmonic Distortion. . . . 22

SHORT-WAVE SECTION -

Short-wave Review. . . . 24

Tokyo's Broadcast Propaganda. . . . 25

The Month's Loggings. . . . 26

New Stations. . . . 26

Latest Loggings. . . . 28

THE SERVICE PAGE -

Wanted - Old Transmitting Valves. . . . 18

Answers to Queries. . . . 30

1942 03
CONTENTS:

CONSTRUCTIONAL -

"Little Companion". . . . 5

TECHNICAL -

Economy in Amplifier Design. . . . 13

Copper Wire Production. . . . 14

Harmonics in Reproduction. . . . 15

SHORT-WAVE SECTION -

Breaking into DX. . . . 22

Short-wave Review. . . . 24

New Stations. . . . 25

Loggings of the Month. . . . 26

THE SERVICE PAGES -

Guide to Back Numbers. . . . 18

Answers. . . . 30

1942 04
CONTENTS:

CONSTRUCTIONAL -

The Latest Signal Tracer. . . . 5

High Fidelity Amplifier. . . . 11

TECHNICAL -

Test Bench Arrangement. . . . 16

"Radio Step by Step"- Part 1. . . . 18

SHORT-WAVE SECTION -

Contempt for Tokyo Propaganda. . . . 17

Short-wave Review. . . . 20

New Stations. . . . 21

Loggings of the Month. . . . 22

THE SERVICE PAGES -

Answers. . . . 26

1942 05
CONTENTS:

CONSTRUCTIONAL -

Adding A.V.C. to "Little Companion". . . . 5

TECHNICAL -

Strange Theories and Facts. . . . 6

The Alignment of Modern Receivers. . . . 10

Radio Step By Step (Part 2). . . . 15

The Triplex Single. . . . 18

SHORT-WAVE SECTION -

Short-Wave Review. . . . 20

New Stations. . . . 21

Loggings of the Month. . . . 22

THE SERVICE PAGES -

Answers. . . . 26

1942 06
CONTENTS:

CONSTRUCTIONAL -

Circuit for a Two-valve Portable Set. . . . 15

Simple Set Testing without Meters. . . . 18

TECHNICAL -

Tone Compensation for Scale Distortion. . . . 5

The Construction and Operation of Meters. . . . 7

A Battery Quiz. . . . 9

Technical Press does a Vital Job. . . . 11

Dealing with the Problem of Instability. . . . 12

A Radio Crossword Puzzle. . . . 14

Radio Step by Step (Part 3). . . . 16

SHORT-WAVE SECTION -

Short-wave Review. . . . 20

New Stations. . . . 21

Loggings of the Month. . . . 22

THE SERVICE PAGES -

Answers. . . . 26

1942 07
CONTENTS:

CONSTRUCTIONAL -

Interesting Circuit Suggestions. . . . 15

Wave Trap to Improve Sensitivity. . . . 18

TECHNICAL -

About Screws and Screw-Threads. . . . 5

Radio Step by Step - Part 4. . . . . 7

Modern Set Building Methods. . . . 9

SHORT-WAVE SECTION -

Short-wave Review. . . . 19

Loggings of the Month. . . . 19

New Stations. . . . 22

THE SERVICE PAGES -

Answers. . . . 26

1942 08
CONTENTS:

CONSTRUCTIONAL -

A New Version of "Little Companion". . . . 5

Making Most of the Milliammeter. . . . 9

TECHNICAL -

Why no Technical Radio in Programmes? . . . . 6

A New Light Source. . . . 14

Some Notes on Servicing Vibrator Sets. . . . 15

Radio Step by Step - Part 5. . . . 18

Parts of Maintenance of Receivers. . . . 24

SHORT-WAVE SECTION -

Short-Wave Review. . . . 20

Loggings of the Month. . . . 22

New Stations. . . . 23

THE SERVICE PAGES -

Answers. . . . 26

1942 09
CONTENTS:

CONSTRUCTIONAL -

The "Victory Set". . . . 5

How to Make a Metal Chassis. . . . 16

TECHNICAL -

Great News for Enthusiasts. . . . 11

Fresh Ideas in Circuits - No. 3. . . . 12

Radio Step by Step - Part 6. . . . 15

Points About Aerial Efficiency. . . . 24

SHORT-WAVE SECTION -

Short-Wave Review. . . . 18

Loggings of the Month. . . . 20

Stop Press. . . . 22

THE SERVICE PAGES -

Answers. . . . 26

1942 10
CONTENTS:

CONSTRUCTIONAL -

Victory Mantel Model. . . . 5

TECHNICAL -

Forming the Amplifier Circle. . . . 7

Simple Hi-Fi Circuit. . . . 9

Carrier-Current Experiments. . . . 13

Radio Step by Step - Part 7. . . . 17

Origin of the Oscillograph. . . . 19

SHORT-WAVE SECTION -

Short-Wave Review. . . . 20

New Stations. . . . 20

Loggings of the Month. . . . 22

SERVICE PAGES -

Answers. . . . 26

1942 11
CONTENTS:

CONSTRUCTIONAL -

Super Quality Dual-Wave Design. . . . 7

TECHNICAL -

Little Known Industrial Equipment. . . . 5

The Weak Links in Reproduction. . . . 9

Handy Feedback System. . . . 11

Better Detection for the T.R.F. .. . . 13

Further Circuit Suggestions. . . . 14

Tolerances in Set Design. . . . 15

Radio Step by Step - Part 8. . . . 18

SHORT-WAVE SECTION -

Short-wave Review. . . . 20

New Stations. . . . 21

Loggings of the Month. . . . 22

THE SERVICE PAGES -

Answers. . . . 26

1942 12
CONTENTS:

CONSTRUCTIONAL -

Inter. Switch for Fidelity. . . . 5

TECHNICAL -

Interesting Ideas in Circuits. . . . 9

Added Range for Battery Sets. . . . 11

A Dictionary of Radio Terms. . . . 13

Radio in Development of Air Transport. . . . 17

Radio Step by Step - Part 9. . . . 18

SHORT-WAVE SECTION -

Aussie News for U.S. Listeners. . . . 7

Short-Wave Review. . . . 20

New Stations. . . . 21

Loggings of the Month. . . . 22

THE SERVICE PAGES -

New Prices for Rola Speakers and Repairs. . . . 16

Answers. . . . 26

1943 01
CONTENTS:

CONSTRUCTIONAL -

Standard 4-Watt Amplifier. . . . 5

TECHNICAL -

Interesting Ideas in Circuits. . . . 7

Modern Gramophone Pick-ups. . . . 9

Substitute Valve Arrangements. . . . 11

Evolution of the Detector. . . . 13

Another Quality Set Design. . . . 14

A Dictionary of Radio Terms. . . . 16

Radio Step by Step - Part 10. . . . 20

The "Magneto" Spacelicker. . . . 23

SHORT-WAVE SECTION -

Short-Wave Review. . . . 21

New Stations. . . . 22

Loggings of the Month. . . . 24

THE SERVICE PAGES -

Answers. . . . 26

1943 02
CONTENTS:

CONSTRUCTIONAL -

A De Luxe Signal Tracer. . . . 5

Power for the Battery Amplifier. . . . 9

S.W. Converter for Battery Sets. . . . 15

TECHNICAL -

Ideas in Circuits. . . . 11

Evolution of the Tuning Condenser. . . . 13

Substitute Valves - Part 2. . . . 16

Radio Step · by Step - Part 11. . . . 17

Resistor and Condenser Boxes. . . . 18

Selections of Crystals for Crystal Sets. . . . 19

SHORT-WAVE SECTION -

Co-Prosperity in Formosa and Korea. . . . 20

Short-Wave Review. . . . 21

New Stations. . . . 23

Loggings of the Month. . . . 24

THE SERVICE PAGES -

Answers. . . . 26

1943 03
CONTENTS:

CONSTRUCTIONAL -

High Tension for Battery Sets. . . . 13

TECHNICAL -

Pentodes for Power ... But Triodes for Tone. . . . 6

Hints for Better Soldering. . . . 10

Evolution of the Loudspeaker. . . . 11

Radio Step by Step - Part 12. . . . 17

Ideas for Modern Circuits. . . . 19

SHORTWAVE SECTION -

Shortwave Review. . . . 20

New Stations. . . . 22

Loggings of the Month. . . . 23

THE SERVICE PAGES -

Answers. . . . 26

1943 04
CONTENTS:

CONSTRUCTIONAL -

The "S.R.L. Special" Amplifier. . . . 5

TECHNICAL -

Audio Frequency Coupling Methods. . . . 7

Ideas in Circuit Design. . . . 10

Gremlins Now Troubling Radio. . . . 12

Evolution of the Radio Valve. . . . 13

Are Deaf Aids Radio Business? . . . . 15

Can There be Radio to the Planets? . . . . 18

Radio Step by Step - Part 13. . . . 19

SHORTWAVE SECTION -

Shortwave Review. . . . 20

New Stations. . . . 22

Loggings of the Month. . . . 23

THE SERVICE PAGES -

Answers. . . . 26

1943 05
CONTENTS:

CONSTRUCTIONAL -

Novel Designs for Amplifier. . . . 5

Receiver Using Junk Parts. . . . 11

TECHNICAL -

Radio Frequency Coupling Methods. . . . 7

Television Tubes. . . . 9

Army Instruction "A La Yank!" . . . . 12

Ideas for Modern Circuits. . . . 13

Modified Views on Short-Wave Propagation. . . . 14

Evolution of the Tuning Coil. . . . 17

Radio Step by Step - Part 14. . . . 18

SHORTWAVE SECTION -

Shortwave Review. . . . 20

New Stations. . . . 22

Allied and Neutral Countries Shortwave Schedule. . . . 22

THE SERVICE PAGES -

Answers. . . . 26

1943 06
CONTENTS:

CONSTRUCTIONAL -

Simple Battery Set. . . . 9

TECHNICAL -

Electronics in Medicine. . . . 5

Ideas from Modern Circuits. . . . 11

Television or Facsimile. . . . 13

Substitute Output Valves. . . . 14

Radio Step by Step. . . . 20

SHORT-WAVE SECTION -

Short-wave Review. . . . 21

New Stations. . . . 21

Notes and Observations. . . . 22

Allied and Neutral Countries Short-wave Schedules. . . . 24

THE SERVICE PAGES -

Answers. . . . 26

1943 07
CONTENTS:

CONSTRUCTIONAL -

Power Amplifier for Batteries. . . . 5

T.R.F. for Local Hi-Fi. . . . 7

Forty-Watt Amplifier. . . . 11

Battery Charger from Speaker Parts. . . . 13

Design for Transposed Aerials. . . . 15

TECHNICAL -

With Radiomen of the Air Force. . . . 6

Television. . . . 9

The Effects of Load Impedance. . . . 17

SHORT-WAVE SECTION -

Short-wave Review. . . . 21

Notes and Observations. . . . 22

New Stations. . . . 23

Allied and Neutral Countries Short-wave Schedules. . . . 24

THE SERVICE PAGES -

Answers. . . . 26

1943 08
CONTENTS:

CONSTRUCTIONAL -

Design for 20-Watt Amplifier. . . . 5

Test Panel for Vibrator Testing. . . . 7

TECHNICAL -

Common Errors of Amplifier Practice. . . . 11

The Measurement of Resistance. . . . 15

Headphones for Quality Reproduction. . . . 17

Radio Step by Step. . . . 18

SHORTWAVE SECTION -

Shortwave Review. . . . 21

Notes and Observations. . . . 22

New Stations. . . . 23

Allied and Neutral Countries Shortwave Schedules. . . . 24

THE SERVICE PAGES -

Answers. . . . 26

1943 09
CONTENTS:

CONSTRUCTIONAL -

Design for Post-War Receiver. . . . 9

Simple Wheatstone Bridge. . . . 15

Super Space-Licker Two. . . . 19

TECHNICAL -

Electronics in Medicine. . . . 5

Full Story of Inverse Feedback. . . . 10

The Story of the Electrolytic Condenser. . . . 17

Resistors - Resistance. . . . 18

SHORTWAVE SECTION -

Shortwave Review. . . . 20

Notes and Observations. . . . 21

New Stations. . . . 22

Allied and Neutral Countries Shortwave Schedules. . . . 23

THE SERVICE PAGES -

Answers. . . . 26

1943 10
CONTENTS:

CONSTRUCTIONAL -

Design for a Simple A.C. Bridge. . . . 5

A Receiver Circuit for Utopia. . . . 9

Building a High-Grade Audio Transformer. . . . 15

TECHNICAL -

History of the Cathode Ray Oscilloscope. . . . 7

Revivals in Radio Practice. . . . 13

Servicing Suggestions for A.C.-D.C. Sets. . . . 18

SHORTWAVE SECTION -

Shortwave Review. . . . 20

Notes and Observations. . . . 21

Allied and Neutral Countries Shortwave Schedules. . . . 23

New Stations. . . . 25

THE SERVICE PAGES -

Answers. . . . 26

1943 11
CONTENTS:

CONSTRUCTIONAL -

Receiver to Operate from 32-Volts. . . . 7

TECHNICAL -

Servicemen get Radio Parts Priority. . . . 5

Future Applications of Frequency Modulation. . . . 9

Design of Screening for Receivers. . . . 11

Are Multiple Valves a Good Proposition? . . . . 13

The Limits to Audio Amplification. . . . 15

The Construction and Amplification of Pick-ups. . . . 16

Speaker Location for High-Power Amplifiers. . . . 18

Common Errors of Radio Testing. . . . 19

SHORTWAVE SECTION -

Shortwave Review. . . . 20

Notes and Observations. . . . 21

New Stations. . . . 22

THE SERVICE PAGES -

Answers. . . . 26

1943 12
CONTENTS:

CONSTRUCTIONAL -

Five-Way Tone Controls. . . . 9

New Design for Folded Horn. . . . 15

TECHNICAL -

Electronics in Industry. . . . 5

Operation of Output Valves. . . . 11

Guide to Back Numbers. . . . 13

High Efficiency Aerial for Shortwaves. . . . 17

Speaker Location for High-Powered Amplifiers. . . . 18

SHORTWAVE SECTION -

Shortwave Review. . . . 20

Notes and Observations. . . . 21

New Stations. . . . 22

THE SERVICE PAGES -

Answers. . . . 26

1944 01
CONTENTS:

CONSTRUCTIONAL -

Simple Vacuum Tube Voltmeter. . . . 5

Hi-Fi Gramophone Pick-up. . . . 9

N.Z. All-Wave Two. . . . 13

Ribbon-Type Microphone. . . . 17

TECHNICAL -

Measurement of Inductance. . . . 7

Radio Nails for Plywood. . . . 14

Band Pass and Pre-selector Unit. . . . 15

Review of "Radio World". . . . 19

SHORTWAVE SECTION -

Short-wave Review. . . . 20

Short-wave Notes and Observations. . . . 21

New Stations. . . . 20

Loggings of the Month. . . . 23

THE SERVICE PAGES -

Answers. . . . 26

1944 02
CONTENTS:

CONSTRUCTIONAL -

What is the Most Suitable Circuit for Utility Receiver? . . . . 7

Make Your Own Soldering Iron. . . . 11

TECHNICAL -

The History of Piezo Crystals. . . . 5

The Case for the Single Ender. . . . 9

Some Thoughts on Post-War Radio. . . . 13

Super Quality Amplifier Design. . . . 15

Proper Operating Conditions for Valves. . . . 16

SHORTWAVE SECTION -

Shortwave Review. . . . 20

Shortwave Notes and Observations. . . . 21

New Stations. . . . 22

Loggings of the Month. . . . 23

THE SERVICE PAGES -

Answers. . . . 26

1944 03
CONTENTS:

CONSTRUCTIONAL -

Design for Utility Circuit. . . . 6

The Three-Two Special. . . . 19

TECHNICAL -

What is the Future of Walkie-Talkie? . . . . 5

A Hundred Million Volts! . . . . 9

Radio in the Newspaper Headings. . . . 10

Electronics in Modern Music. . . . 11

Proper Methods of Using Valves. . . . 13

Technical Ideas from the Talkies. . . . 17

SHORTWAVE SECTION -

Shortwave Review. . . . 20

Shortwave Notes and Observations. . . . 21

New Stations. . . . 20

Loggings of the Month. . . . 23

THE SERVICE PAGES -

Answers. . . . 26

1944 04
CONTENTS:

CONSTRUCTIONAL -

Standard Features for Utility. . . . 6

Avoiding the H.T. Transformer. . . . 7

Electronics in Modern Music. . . . 9

"Mystery" Crystal Set. . . . 17

TECHNICAL -

Ideals in DX Sets. . . . 5

Simple Volume Expander Circuit. . . . 11

Reviving Dry Batteries Electrically. . . . 13

Pentodes and Similar Power Valves. . . . 14

SHORTWAVE SECTION -

Shortwave Review. . . . 20

New Stations. . . . 20

Shortwave Notes and Observations. . . . 21

Loggings. . . . 23

THE SERVICE PAGES -

Answers. . . . 26

1944 05
CONTENTS:

CONSTRUCTIONAL -

Novel Detector in Contest Entry. . . . 6

An Amplifier Beyond Reproach? . . . . 11

TECHNICAL -

The Tropic-Proofing Era. . . . 5

A Serviceman's Lament. . . . 7

The Multi-Vibrator and its Uses. . . . 9

Radio Aids to U.S. Navigation. . . . 12

Technical Data on Valve Cathodes. . . . 14

Radio Heating is a Modern Wonder. . . . 17

Wider Tone Control. . . . 18

Serviceman Licences Issued. . . . 19

SHORTWAVE SECTION -

Shortwave Review. . . . 20

New Stations. . . . 20

Shortwave Notes and Observations. . . . 21

Loggings. . . . 23

THE SERVICE PAGES -

Answers. . . . 26

1944 06
CONTENTS:

CONSTRUCTIONAL -

Utility Battery-Operated Set. . . . 6

A Long-Range Utility Receiver. . . . 8

Direct-Coupled Utility Design. . . . 10

TECHNICAL -

Details of Victorian Amplifier Contest. . . . 5

Some New Ideas from Modern Circuits. . . . 11

Output Transformer Construction. . . . 13

Adjustable I.F. Selectivity. . . . 16

A.B.C. of Frequency Modulation. . . . 19

U.S. Claims Invention of Radar. . . . 20

Signal Officers in the Making. . . . 21

SHORTWAVE REVIEW -

Notes From My Diary. . . . 23

New Stations. . . . 23

Shortwave Notes and Observations. . . . 24

THE SERVICE PAGES -

Answers. . . . 26

1944 07
CONTENTS:

CONSTRUCTIONAL -

Simple Vacuum Voltmeter. . . . 7

Home Built Communications Set. . . . 14

TECHNICAL -

R.A.A.F. Jungle Broadcaster. . . . 5

Winning Essay. . . . 8

Design Considerations for Amplifiers. . . . 10

Finer Points About Pick-ups. . . . 19

Distortion - Its Cause and Cure. . . . 20

SHORTWAVE REVIEW -

Notes From My Diary. . . . 23

New Stations. . . . 23

Short Wave Notes and Observations. . . . 24

THE SERVICE PAGES -

Answers. . . . 26

1944 08
CONTENTS:

CONSTRUCTIONAL -

Home-Made Hi-Fi Pick-up. . . . 5

Wide Range Audio Frequency Oscillator. . . . 7

A Useful A.C. Bridge Circuit. . . . 13

V.T. Voltmeter for Audio Work. . . . 18

TECHNICAL -

The Accuracy of Ohmmeters. . . . 9

Screening by Metal Spray. . . . 11

Frequency-Controlling Crystals. . . . 17

Bass Booster for Amplifiers. . . . 19

SHORTWAVE REVIEW -

Notes From My Diary. . . . 20

New Stations. . . . 20

Shortwave Notes and Observations. . . . 21

Shortwave Schedules. . . . 24

THE SERVICE PAGES -

Answers. . . . 26

1944 09
CONTENTS:

CONSTRUCTIONAL -

The "Ferrier" Super Crystal Receiver. . . . 10

A Non-Microphonic Volume-Expander Circuit. . . . 13

Simple and Effective Valve Tester. . . . 15

TECHNICAL -

N.Z. Radiomen to go to Britain. . . . 5

The Design of Direct-Coupled Amplifiers. . . . 6

Eclipse Staff Holds Amplifier Contest. . . . 11

A Buzzer Makes an Handy Multivibrator. . . . 12

Radio Frequency for Industrial Heating. . . . 16

SHORTWAVE REVIEW -

Notes From My Diary. . . . 23

New Stations. . . . 23

Shortwave Notes and Observations. . . . 24

THE SERVICE PAGES -

Answers. . . . 26

1944 10
CONTENTS:

CONSTRUCTIONAL -

Something Fresh in Amplifiers. . . . 5

"Novochord" is Electronic Piano. . . . 7

Pick-Up Principles and Practice. . . . 13

Cathode-Follower Amplifier Design. . . . 16

Inductance and Capacity Meter. . . . 17

TECHNICAL -

Cathode Follower Output Stage. . . . 11

Iconoscope - The Electron "Gun". . . . 21

SHORTWAVE REVIEW -

Notes of My Diary. . . . 23

Shortwave Notes and Observations. . . . 24

New Stations. . . . 24

THE SERVICE PAGES -

Answers. . . . 26

1944 11
CONTENTS:

CONSTRUCTIONAL -

Repairing and Adjusting Vibrators. . . . 22

A Receiver Without Gang. . . . 23

Alignment by Wobbler. . . . 9

Pick-up Principles and Practice. . . . 11

TECHNICAL -

Mutton Good at Amplifiers. . . . 5

Possibilities of Frequency Modulation. . . . 7

Curves - Straight or Bent. . . . 13

Valves in Theory and Practice. . . . 16

Research Into Phase-Changers. . . . 21

The Future for Recordings. . . . 24

SHORTWAVE REVIEW -

Notes from My Diary. . . . 27

New Stations. . . . 27

Shortwave Notes and Observations. . . . 28

Loggings. . . . 31

THE SERVICE PAGES -

Answers. . . . 33

1944 12
CONTENTS:

CONSTRUCTIONAL -

Contest Was Keen. . . . 5

Pick-up Principles. . . . 13

Victorian Championship. . . . 17

TECHNICAL -

Aesthetics of Reproduction. . . . 19

Music While You Work. . . . 26

SHORTWAVE REVIEW -

Shortwave Notes and Observations. . . . 29

Notes From My Diary. . . . 31

New Stations. . . . 33

THE SERVICE PAGES -

Answers. . . . 34

1945 01
CONTENTS

CONSTRUCTIONAL —

Power Transformers. . . . 5

TECHNICAL —

Tales of Phase Inverters. . . . 11

In Defence of "A504". . . . 13

The Telechrome. . . . 17

Factors in High Fidelity. . . . 19

Acoustic Typewriters. . . . 25

SHORTWAVE REVIEW —

The Month's Loggings. . . . 29

Notes From My Diary. . . . 32

New Stations. . . . 31

THE SERVICE PAGES —

Answers. . . . 34

1945 02
CONTENTS

CONSTRUCTIONAL —

An Alternating Design. . . . 5

Make Your Own Selenium Cell. . . . 17

TECHNICAL —

Square Wave Testing. . . . 11

Aesthetics of Reproduction. . . . 14

Filing Your Resistances. . . . 15

A Short Course in Radio Fundamentals. . . . 20

Voltage Doubling. . . . 25

The Miller Effect. . . . 27

SHORTWAVE REVIEW —

Notes From My Diary. . . . 30

New Stations. . . . 31

Loggings. . . . 32

THE SERVICE PAGES —

Answers. . . . 34

1945 03
CONTENTS

CONSTRUCTIONAL —

A Circuit of D.C. Power. . . . 5

Reflex for Results. . . . 11

A Handy Tester Design. . . . 13

TECHNICAL —

Practical Aspects of High Fidelity. . . . 6

A Short Course in Radio Fundamentals — Part 2. . . . 14

The Amplifier Competition. . . . 18

Cathode Ray Tubes. . . . 19

Moving Coil Meters. . . . 25

Post-War Receiver Features. . . . 29

SHORTWAVE REVIEW —

Notes From My Diary. . . . 30

New Stations. . . . 31

Loggings. . . . 32

The Service Pages —

The Service Pages. . . . 34

1945 04
CONTENTS

CONSTRUCTIONAL —

Balanced Linear V.T.V.M. .. . . 5

TECHNICAL —

Continental Design. . . . 11

Contrast Without Distortion. . . . 15

Aegis Components Do War Job. . . . 17

A Short Course In Radio Fundamentals - Part 3. . . . 18

Technical Review from U.S.A. .. . . 25

Production of Audio Frequencies. .. . . . . .. .. . 27

SHORTWAVE REVIEW —

Notes From My Diary. . . . 30

New Stations. . . . 31

Loggings. . . . 32

The Service Pages —

The Service Pages. . . . 34

1945 05
CONTENTS

CONSTRUCTIONAL —

An Improved Reflex Circuit. . . . 7

One-valve Test Oscillator. . . . 9

A Sound Design for an Audio Oscillator. . . . 13

TECHNICAL —

Tolerance in Set Design. . . . 5

A High-Fidelity Hint. . . . 11

Building the A.I.F. Broadcaster. . . . 12

A Short Course in Radio Fundamentals — Part 4. . . . 16

New Dutch Valves. . . . 22

SHORTWAVE REVIEW —

Notes From My Diary. . . . 23

New Stations. . . . 24

Loggings and Changes. . . . 25

THE SERVICE PAGES —

The Service Pages. . . . 26

1945 06
CONTENTS

CONSTRUCTIONAL —

A Well-tried Reflex Circuit. . . . 20

TECHNICAL —

Radio Location - War-winner. . . . 5

Walkie-Talkies in Peace. . . . 11

Wireless Rules the Waves. . . . 13

A Short Course in Radio Fundamentals - Part 5. . . . 16

Fragmentary Crystals. . . . 19

History and Theory of Microphones. . . . 21

Another Hint for High Fidelity. . . . 24

Latest Technical Notes from New York. . . . 25

SHORTWAVE REVIEW —

Notes From My Diary. . . . 26

New Stations. . . . 27

Loggings. . . . 28

THE SERVICE PAGES —

Answers. . . . 30

1945 07
CONTENTS

CONSTRUCTIONAL —

Wide Range Resistance and Capacity Meter. . . . 9

Tone Compensation Amplifier. . . . 20

TECHNICAL —

Radio in America. . . . 5

Theory of Oscillation. . . . 17

Power Supply Filters. . . . 24

Straede's Amplifier Contest. . . . 24

A Short Course in Radio Fundamentals. . . . 26

Latest Technical Notes from New York. . . . 29

SHORTWAVE REVIEW —

Notes From My Diary. . . . 30

New Stations. . . . 31

Loggings. . . . 32

THE SERVICE PAGES —

The Service Pages. . . . 34

1945 08
CONTENTS

CONSTRUCTIONAL —

Making Paper Condensers. . . . 11

Small Hints for Big Effects. . . . 15

TECHNICAL —

Radio for Model Planes. . . . 5

Eliminating Hum. . . . 6

Trade With America. . . . 7

A Short Course in Radio Fundamentals. . . . 18

Decibel — a Logarithmic Function. . . . 22

The Theory Behind Proper Amplifier Design. . . . 26

SHORTWAVE REVIEW —

Notes From My Diary. . . . 30

New Stations. . . . 32

Loggings. . . . 32

THE SERVICE PAGES —

The Service Pages. . . . 34

1945 09
CONTENTS

CONSTRUCTIONAL —

A Camera Case Portable. . . . 15

Getting the Best from a Pick-up. . . . 17

TECHNICAL —

An Answer to the Cathode Follower. . . . 11

Theory Behind Proper Amplifier Design — Part 2. . . . 18

Probe Adapter for the V.T.V.M. .. . . 24

Future Appreciations of Radio. . . . 28

Starting in the Radio Business. . . . 5

Standard Valve Types for 1945. . . . 7

Victorian Amplifier Contest. . . . 7

SHORTWAVE REVIEW —

Notes from My Diary. . . . 30

New Stations. . . . 31

Loggings. . . . 32

THE SERVICE PAGES —

The Service Pages. . . . 34

1945 10
CONTENTS

TECHNICAL —

Our Future Policy. . . . 5

Honour Roll. . . . 7

Amateur Radio. . . . 9

The Transitron Oscillator. . . . 11

Vibrating Power Supplies. . . . 17

Radar's Work With the Navy. . . . 21

The Theory Behind Proper Amplifier Design. . . . 24

SHORTWAVE SECTION —

Notes From My Diary. . . . 30

The Month's Loggings. . . . 32

New Stations. . . . 33

THE SERVICE PAGES —

The Service Pages. . . . 34

1945 11
CONTENTS

CONSTRUCTIONAL —

Stereophonic Amplifier. . . . 7

An Electric Filter. . . . 11

"Aegis" Little Companion Mantel Model. . . . 15

TECHNICAL —

Victorian Amplifier Contest. . . . 5

Television on Rental Basis. . . . 26

Ham Notes — Calling CQ! . . . . 27

SHORTWAVE REVIEW —

Notes From My Diary. . . . 30

New Stations. . . . 32

THE SERVICE PAGES —

Answers. . . . 34

1945 12
CONTENTS

CONSTRUCTIONAL —

The "Lamb" Noise Suppressor. . . . 17

TECHNICAL —

Electro Dynamics Are Obsolete. . . . 5

The Hammond Electric Organ. . . . 6

Hints About Using A.V.C. .. . . 11

Mutton the Winner. . . . 15

Panoramic Reception. . . . 27

Ham Notes — Calling CQ. . . . 27

SHORTWAVE REVIEW —

Notes from My Diary. . . . 30

New Stations. . . . 31

THE SERVICE PAGES —

Answers. . . . 34

1946 01
CONSTRUCTIONAL —

The Champion Amplifier. . . . 5

Simple Service Oscillator. . . . 7

Home Made Filter Chokes. . . . 17

TECHNICAL —

Cathode Follower Tests. . . . 13

Trends in Set Design. . . . 21

U.S. Radio Newsletter. . . . 22

Principles of Radar. . . . 23

Duplex Speakers for Fidelity. . . . 25

Ham Notes — Calling CQ. . . . 27

SHORTWAVE REVIEW —

Notes From My Diary. . . . 30

New Stations. . . . 33

THE SERVICE PAGES —

Answers. . . . 34

1946 02
CONSTRUCTIONAL —

Circuits — The Sober way. . . . 7

Improving DX Performance. . . . 13

TECHNICAL —

New "Ham" Technique. . . . 5

"Wireless Set Number Ten". . . . 14

Signal Tracer in Miniature. . . . 15

How Radio Signals are Broadcast. . . . 17

The Growth of the Radar Chain. . . . 23

Ham Notes — Calling CQ. . . . 27

SHORTWAVE REVIEW —

Notes From My Diary. . . . 31

New Stations. . . . 32

THE SERVICE PAGES —

Answers. . . . 34

1946 03
CONSTRUCTIONAL —

The "VK2NO — V6". . . . 5

TECHNICAL —

Using the "1852". . . . 13

1852 Characteristics. . . . 14

Using Available Gangs. . . . 19

New Permag Speakers. . . . 23

Radio Trade Notes. . . . 25

Ham Notes — Calling CQ. . . . 27

SHORTWAVE REVIEW —

Notes From My Diary. . . . 31

New Stations. . . . 32

THE SERVICE PAGES —

Answers. . . . 34

1946 04
CONSTRUCTIONAL —

50-Watt Phone Transmitter. . . . 19

TECHNICAL —

Efficient Aerials for VHF. . . . 5

Improved Modulation Oscillator. . . . 7

Long Range Two Valver. . . . 9

Polysterene for Amateurs. . . . 11

My Own. . . . 15

The Proximity Radio Fuse. . . . 17

Crystals Will Not Amplify. . . . 21

30-Watt Modulation for Hams. . . . 23

Dismal Future for Radio Trade. . . . 25

Ham Notes. . . . 27

SHORTWAVE REVIEW —

Notes From My Diary. . . . 31

New Stations. . . . 32

THE SERVICE PAGES —

Answers. . . . 34

1946 05
CONSTRUCTIONAL —

Metropolis Four. . . . 23

The "Ferrotune" Superheterodyne. . . . 37

TECHNICAL —

What of the Future of "Ham Radio"? . . . . 5

Simple Impedance Measurements. . . . 9

The Channel Analyser. . . . 15

Loud Speaker Baffling Systems. . . . 31

A Decade of Good Battery Circuits. . . . 34

Reception Experiments. . . . 40

Ham Notes. . . . 41

PERSONAL —

Pages. . . . 5, 7, 11, 17, 20, 21, 33, 49

SHORTWAVE REVIEW —

Notes From My Diary. . . . 45

New Stations. . . . 46

Loggings. . . . 47

THE SERVICE PAGES —

Answers. . . . 50

1946 06
CONSTRUCTIONAL —

Receiving Beam for "Ten". . . . 7

TECHNICAL —

Post-war American Receiver. . . . 5

Improved Signal Tracer. . . . 6

Exciter Unit for 50 Mc. . . . . 11

Remarkable Possibilities in 2 Mc. I.F. .. . . 15

Do You Want to be a Ham? . . . . 18

Is That Your Bid? . . . . 20

Understand Valve Curves. . . . 21

More About the Hammond Organ. . . . 28

Experiences with Noise Suppression. . . . 29

Ham Notes. . . . 31

SHORTWAVE REVIEW —

Notes From My Diary. . . . 38

Shortwave Stations of the World. . . . 38

THE SERVICE PAGES —

Answers. . . . 42

1946 07
CONSTRUCTIONAL —

The Latest in Direct Coupling. . . . 7

"The Spotter". . . . 11

Powerful 8-Valve Circuit. . . . 17

An Ideal Single-Ender. . . . 21

TECHNICAL —

Advantages of Ferrotune. . . . 5

Politics of Ham Radio. . . . 15

Servicing A.C. Receivers. . . . 20

Estimating Receiver Performance. . . . 23

Operating the 807. . . . 27

Ham Notes. . . . 31

SHORTWAVE REVIEW —

Notes From My Diary. . . . 38

Shortwave Stations of the World. . . . 39

THE SERVICE PAGES —

Answers. . . . 42

1946 08
CONSTRUCTIONAL —

A Handy Multi-Meter Kit. . . . 7

"All-Wave" Band Spread Two. . . . 13

The "Ferrotune" Reinartz. . . . 17

Sky-Cruiser Battery Four. . . . 21

The Fidelity Broadcast. . . . 25

TECHNICAL —

Outlook for "Ham" Market. . . . 5

Make Your Own "Stroboscope". . . . 15

Getting Started at Set-Building. . . . 29

Ham Notes - Calling CQ. . . . 31

SHORTWAVE REVIEW —

Notes From My Diary. . . . 38

New Stations. . . . 39

THE SERVICE PAGES —

Answers. . . . 42

1946 09
CONSTRUCTIONAL —

A Band Checker. . . . 5

A Regenerative Pre-Selector Unit. . . . 9

The "Sky-Hawk Four". . . . 29

TECHNICAL —

A Effective Noise Limiter. . . . 11

More About Ham Politics. . . . 13

Getting Started at Set Building (Part 2). . . . 15

The Connoisseur. . . . 19

The Importance of Lay Out. . . . 27

Fault Finding by Substitutions. . . . 28

Ham Notes. . . . 31

SHORTWAVE REVIEW —

Notes From My Diary. . . . 38

Shortwave Stations of the World. . . . 40

THE SERVICE PAGES —

Speedy Queries. . . . 42

1946 10
CONSTRUCTIONAL —

A Practical Circuit. . . . 7

An A.C. Bridge. . . . 21

TECHNICAL —

"Sparks" as a Career. . . . 5

Technical Notes From Up North. . . . 11

Problems of Commercial Design. . . . 15

Dealing With Man-Made Static. . . . 25

Ham Papers. . . . 29

Calling CQ. . . . 31

Doings on "One-and-Threequarters". . . . 33

DX Possible on "Six". . . . 34

Bargains - and Where Encountered. . . . 35

Around the Six Metre Band. . . . 36

Night Flying in Daylight. . . . 37

SHORTWAVE REYIEW —

Notes From My Diary. . . . 38

Shortwave Stations of the World. . . . 39

THE SERVICE PAGES —

Answers. . . . 42

1946 11
CONSTRUCTIONAL —

"Ferrotune" Mantel Model. . . . 15

TECHNICAL —

A Really Good Amplifier. . . . 5

More Restrictions for Amateurs. . . . 7

A New Home for "Radio World". . . . 9

Circuit for A.C. or Battery. . . . 11

Technical Radio in S. America. . . . 13

A Full Frequency Range Amplifier. . . . 18

To Deliver Forty Five Watts. . . . 19

Some Notes on the Care of Batteries. . . . 28

Calling CQ. . . . 31

SHORTWAVE REVIEW —

Notes for My Diary. . . . 38

Shortwave Schedules. . . . 40

THE SERVICE PAGES —

Answers. . . . 42

1946 12
CONSTRUCTIONAL —

High Quality Multimeter. . . . 5

Build Yourself an F.F.R. Amplifier. . . . 15

TECHNICAL —

Cracking the Oyster. . . . 11

Radiotron Applications Laboratory. . . . 26

Calling CQ. . . . 27

SHORTWAVE REVIEW —

Notes From My Diary. . . . 31

THE SERVICE PAGES —

Answers. . . . 34

1947 01
CONTENTS

TECHNICAL —

Designing Battery Receivers. . . . 5

The Control of Tone. . . . 13

The Choice of I.F. Frequencies. . . . 19

Calling CQ. . . . 21

Further Restrictions for Hams. . . . 11

Australian Broadcasting Stations. . . . 26

SHORTWAVE REVIEW —

Notes from My Dairy. . . . 30

THE SERVICE PAGES —

Answers. . . . 34

1947 02
CONTENTS

TECHNICAL —

Trends in Design. . . . 5

High-Fidelity Pick-ups from England. . . . 9

The "F.F.R." 45-watt Amplifier. . . . 15

Two more "Connoisseur" Sets. . . . 21

Re-vamping the "F.S.6". . . . 27

Calling CQ. . . . 33

SHORTWAVE REVIEW —

Notes from My Diary. . . . 38

THE SERVICE PAGES —

Answers. . . . 42

1947 03
CONTENTS

TECHNICAL —

Another Type of Beam Array. . . . 5

Electric-Acoustic Coupling. . . . 7

Quick Systematic Testing. . . . 13

Sensitive Four-Valve Circuit. . . . 17

Radio Frequency Chokes. . . . 27

The Truth About Television. . . . 30

SHORTWAVE REVIEW —

Notes from My Diary. . . . 38

THE SERVICE PAGES —

Answers. . . . 42

1947 04
CONTENTS

TECHNICAL —

Medical and Biological. . . . 7

Trends in Pick-up Developments. . . . 13

Easy Reflex Circuits. . . . 14

Visual Tuning Indicators. . . . 17

Printed Wiring Methods. . . . 29

A Relay from an old A.F. Transformer. . . . 31

SHORTWAVE REVIEW —

Notes From My Diary. . . . 38

THE SERVICE PAGES —

Answers. . . . 42

1947 05
CONTENTS

TECHNICAL —

Problems of Trade Discount. . . . 5

Double Superhet for Ham Use. . . . 9

Preamplifiers for Talkie Work. . . . 11

Starting a Radio Business. . . . 13

Visual Tuning Indicators. . . . 16

Photo-Electric Cells. . . . 24

Disposal Bargains — And Otherwise. . . . 26

Service Problems in U.S.A. .. . . 30

SHORTWAVE REVIEW —

Notes From My Diary. . . . 38

THE SERVICE PAGES —

Answers. . . . 42

1947 06
CONTENTS

TECHNICAL —

The "Six-Ten". . . . 5

Unusual Condensers. . . . 13

Can You Answer These? . . . . 15

Car Radio. . . . 17

The "Voyager". . . . 19

Teleconda 3. . . . 27

Pepping up No. 4 Set. . . . 31

SHORTWAVE REVIEW —

Notes From My Diary. . . . 38

THE SERVICE PAGES —

Answers. . . . 42

1947 07
CONTENTS

TECHNICAL —

Natural Reproduction. . . . 5

Wave Traps. . . . 11

Great Circle Gadget. . . . 13

Grounded-Grid R.F. Stages. . . . 15

The "F.S.L." — Plus. . . . 18

Caravan Radio. . . . 20

"Little Wonder Two". . . . 24

"Europa 5". . . . 26

Technical Topics. . . . 29

SHORTWAVE REVIEW —

Notes From My Diary. . . . 38

THE SERVICE PAGES —

Answers. . . . 42

1947 08
CONTENTS

CONSTRUCTIONAL —

"High Quality Six". . . . 9

"Q-Plus". . . . 17

TECHNICAL —

Ham Radio at Sea. . . . 5

Bias for Battery Sets. . . . 7

English Quality Amplifier. . . . 13

Radio on H.M.S. "Vanguard". . . . 21

Radio Reflections from Shooting Stars. . . . 24

Plastics to Revolutionise Television. . . . 26

International DX Contest. . . . 28

SHORTWAVE REVIEW —

Notes From My Diary. . . . 38

THE SERVICE PAGES —

Answers. . . . 42

1947 09
CONTENTS

CONSTRUCTIONAL —

Signal Tracer for Service. . . . 7

Build Your Own Oscillator. . . . 9

TECHNICAL —

Anisotropic Alnico. . . . 17

Beams, Beams, Beautiful Beams. . . . 21

The Kingsley "K.S.9'er". . . . 23

A Review of Ferrotune. . . . 25

Ideal Broadcast Station Console. . . . 32

Among Our Readers. . . . 34

Calling CQ. . . . 41

SHORTWAVE REVIEW —

Notes From My Diary. . . . 46

THE SERVICE PAGES —

Answers. . . . 50

1947 10
CONTENTS

CONSTRUCTIONAL —

"Snug 5". . . . 5

TECHNICAL —

Kingsley Equipment for U.H.F. .. . . 11

Adjusting the Dipole. . . . 27

"Rural 4". . . . 15

Servicing by Signal Tracer. . . . 29

Calling "C.Q." . . . . 33

SHORTWAVE REVIEW —

Notes From My Diary. . . . 38

THE SERVICE PAGES —

Answers. . . . 42

1947 11
CONTENTS

CONSTRUCTIONAL —

"Sally". . . . 5

TECHNICAL —

A Record on Six Metres. . . . 9

Signal Tracer. . . . 11

High-Fidelity Transformers. . . . 17

Highlights of Radiolympia. . . . 19

A New Method of Tuning. . . . 23

"Transmitter, FS6 Plus". . . . 29

Among Our Readers. . . . 33

Calling CQ. . . . 41

SHORTWAVE REVIEW —

Notes From My Diary. . . . 46

THE SERVICE PAGES —

Answers. . . . 50

1947 12
CONTENTS

TECHNICAL —

Electronics in Meteorology. . . . 5

Experiment in De-centralisation. . . . 7

Better Interstate Reception. . . . 9

Theatre Sound Equipment. . . . 13

Latest American Technique. . . . 15

Among Our Readers. . . . 17

Walkie-Talkie. . . . 18

Amateur Personalities. . . . 21

Antenna Tips for the New Hand. . . . 23

Networks — and "Rag-Chew" Clubs. . . . 26

Calling CQ! . . . . 31

SHORTWAVE REVIEW —

Notes From My Diary. . . . 38

THE SERVICE PAGES —

Speedy Query Service. . . . 42

1948 01
CONTENTS

TECHNICAL —

Splendid Contest. . . . 5

The Champion Amplifier. . . . 7

Amateur Personalities. . . . 14

Convert to High Fidelity. . . . 18

"Mantelette Three". . . . 20

Operation Annie. . . . 22

Recent Valve Developments. . . . 29

Among Our Readers. . . . 31

Performance with Economy. . . . 35

Ham Notes. . . . 39

SHORTWAVE REVIEW —

Notes From My Diary. . . . 46

THE SERVICE PAGES —

Speedy Query Service. . . . 50

1948 02
CONTENTS

TECHNICAL —

Stir in Hi-Fi Circles. . . . 5

Walkie-Talkie. . . . 9

High Fidelity From Crystal Pickups. . . . 15

Hints and Tips. . . . 18

Home-Wound Power Transformers. . . . 19

Converters for "Six" and "Ten". . . . 24

Wanted — An Inventor. . . . 27

The "Teleconda" Powerport. . . . 31

Ham Notes. . . . 35

SHORTWAVE REVIEW —

Notes From My Diary. . . . 38

THE SERVICE PAGES —

Speedy Query Service. . . . 42

1948 03
CONTENTS

TECHNICAL —

In Search of Fidelity. . . . 5

A Modern Battery Receiver. . . . 9

Radio World Review. . . . 11

Among Our Readers. . . . 15

A Personal Portable. . . . 19

3-Valve Triple-Wave Receiver. . . . 27

Calling CQ. . . . 34

SHORTWAVE REVIEW —

Notes From My Diary. . . . 38

THE SERVICE PAGES —

Speedy Query Service. . . . 42

1948 04
CONTENTS

TECHNICAL —

ZAAYER Crosses Atlantic on "Six". . . . 5

The L.s.d. of High Fidelity. . . . 7

Amateur Personalities. . . . 13

Narrow-Band F.M. Adaptor. . . . 15

A Direct Coupled Circuit. . . . 17

T.R.F. Mantel Four. . . . 18

Speaker Impedance Matching. . . . 20

Permags Here to Stay. . . . 28

Circuit for an F.M. Receiver. . . . 29

Among Our Readers. . . . 31

Calling C.Q. .. . . 35

SHORTWAVE REVIEW —

Notes From My Diary. . . . 39

THE SERVICE PAGES —

Speedy Query Service. . . . 42

1948 05
CONTENTS

TECHNICAL —

Limelight on Quality. . . . 5

A Home-made Hi-Fi Pick-up. . . . 9

Sad Lack of Technical Development. . . . 13

Protective Circuits. . . . 16

Deaf Aids From Health Clinics. . . . 19

An English Three-Element Beam. . . . 21

Germanium Crystals. . . . 23

Well-tested Battery Receiver. . . . 25

Among Our Readers. . . . 28

Effective Static Reduction. . . . 29

The "VK2NO" Ribbon Beam. . . . 32

Calling CQ. . . . 35

SHORTWAVE REVIEW —

Notes From My Diary. . . . 39

THE SERVICE PAGES —

Speedy Query Service. . . . 42

1948 06
CONTENTS

TECHNICAL —

Fidelity Tuner With A.V.C. .. . . 5

Interesting Pre-Amplifier. . . . 8

Well-Tested Inter-Com. System. . . . 11

Oscillator for Code Speed. . . . 13

Communications Coil Assembly. . . . 17

The "Economy Three". . . . 19

Service By Substitution. . . . 24

SHORTWAVE REVIEW —

Calling CQ. . . . 35

Notes From My Diary. . . . 39

THE SERVICE PAGES —

Speedy Query Service. . . . 42

1948 07
CONTENTS

TECHNICAL —

Building Box Baffles. . . . 5

Using H.F. Pentodes. . . . 9

Pre-Amplifier Tone Control. . . . 11

12-Valve Communications Receiver. . . . 13

Signal-Strength Meters. . . . 17

Among Our Readers. . . . 21

A Four-Valve Battery Portable. . . . 23

Calling CQ. . . . 27

Amateur Transmitting Licences. . . . 29

SHORTWAVE REVIEW —

Notes From My Diary. . . . 31

THE SERVICE PAGES —

Speedy Query Service. . . . 34

1948 08
CONTENTS

TECHNICAL —

Converter For Amateur Bands. . . . 5

History of "1933 Standard". . . . 9

"The Bedside 5". . . . 13

Loudspeaker Baffling. . . . 17

The American Radio Industry. . . . 19

Exceptional 20 Watt Amplifier. . . . 21

"Long Shot" Economy Beam. . . . 23

Calling CQ! . . . . 27

SHORTWAVE REVIEW —

Notes From My Diary. . . . 31

THE SERVICE PAGES —

Speedy Query Service. . . . 34

1948 09
CONTENTS

F.M. — Minus Boloney. . . . 5

Starting Off In Radio. . . . 9

New Broadcast Wavelengths. . . . 15

Buyers' Guide. . . . 25

Students' One-Valve Experimental Set. . . . 39

Calling CQ. . . . 47

How To Become a "Ham". . . . 49

The Morse Code. . . . 50

International Amateur Prefixes. . . . 52

The "Q" Code. . . . 53

Index to Volume 12. . . . 54

Short-Wave Review. . . . 55

Bargain Corner. . . . 58

1948 10
CONTENTS

Teleconda 4841. . . . 5

The Vibrator. . . . 13

Extension Speaker. . . . 23

Multi Channel Tracer. . . . 27

Problems With Battery Sets. . . . 29

Among Our Readers. . . . 31

Frequency Range. . . . 33

Calling C.Q. .. . . 43

A Converter For 50 Mc. . . . . 45

Shortwave Review. . . . 47

Speedy Query Service. . . . 50

1948 11
CONTENTS

De-Luxe Amateur Receiver. . . . 5

Equipment Valves For 1949. . . . 9

The Man Before Marconi. . . . 11

Junior Feedback Amplifier. . . . 15

Home-Made Hi-Fi Pick-Ups. . . . 17

A Personal Radio Set. . . . 19

The "Q-Plus" Coils. . . . 22

Resistor Faults. . . . 25

R.C.S. Coils Submerged. . . . 29

Tuning Range For Receivers. . . . 30

Among Our Readers. . . . 31

Calling C.Q. .. . . 35

Shortwave Review. . . . 39

Speedy Query Service. . . . 42

1948 12
CONTENTS

Car-Lectric. . . . 5

Dials and Cabinets. . . . 15

Infinite Impedance Detector. . . . 20

Communications Receivers. . . . 21

Home Recording Hints. . . . 25

Progress In British Radio. . . . 27

Mullard Receivers. . . . 29

Notes From My Diary. . . . 31

Speedy Query Service. . . . 34

1949 01
CONTENTS

An Electronic Alarm. . . . 5

Handy P.A. Amplifier. . . . 7

World Standard. . . . 13

A Challenge. . . . 16

Differential Condensers. . . . 17

"New Look" Selectivity. . . . 21

10/15 Converter. . . . 25

Standard Power Unit. . . . 29

Photo-Flash Experiments. . . . 31

New Set Designs. . . . 35

Speedy Query Service. . . . 42

1949 02
CONTENTS

Radio in the News. . . . 5

New Type of Fidelity Pick-up. . . . 6

More About the Standard. . . . 7

New Rola Speaker. . . . 10

Simple Galvanometers. . . . 11

Among Our Readers. . . . 14

Direct-Coupled 807. . . . 15

Service Oscillator. . . . 17

English Coil Box. . . . 19

British Television Exports. . . . 20

New Brand of Transformers. . . . 21

Medium-Fi. . . . 23

Key to the VT Valve Types. . . . 26

Shortwave Review. . . . 31

Speedy Query Service. . . . 34

1949 03
CONTENTS

Midway Portable. . . . 5

Improved 807 Amplifier. . . . 9

Car Radio Installation. . . . 11

A.C. Power from Batteries. . . . 13

Answers in Full. . . . 15

Radio Control for Models. . . . 20

Phase Splitting Designs. . . . 21

Reproduction of Speech. . . . 29

Among Our Readers. . . . 41

New Angle on Direct Coupling. . . . 43

Good Gramo. Motor. . . . 45

Shortwave Review. . . . 47

Speedy Query Service. . . . 50

1949 04
CONTENTS

Measuring A.C. Current. . . . 5

New Style Direct Coupling. . . . 7

A Simple Multi-Meter. . . . 9

Are Component Prices Unreasonable? . . . . 13

Time Is Money. . . . 16

Cathode Coupling, Again. . . . 17

How To Read Circuit Schematics. . . . 19

Photo-flash Outfit. . . . 22

A Wide-range Bridge. . . . 23

Among Our Readers. . . . 24

Simple Mantel Model. . . . 26

Introduction to "Ham-gen". . . . 27

Receiver Aerial Matching. . . . 28

T.R.F. Ham Receiver. . . . 31

Converting That Prop Motor. . . . 37

1949 05
CONTENTS

Heterodyne Frequency Meter. . . . 5

Third Dimensional Amplifier. . . . 9

Multi-Vibrator. . . . 11

The Car-Lectric — Mk. III. . . . 13

How to Read Circuits. . . . 19

Magnets and Magnetism. . . . 23

Factory-Made Set Design. . . . 29

Voltage Regulation. . . . 31

Sell Speakers. . . . 37

New Brand of Coil Units. . . . 38

Short Wave Review. . . . 39

Speedy Query Service. . . . 50

1949 06
CONTENTS

An Electronic Stroboscope. . . . 5

Television in Europe. . . . 7

The "Vega" Dual-Wave Five. . . . 9

Latest English Developments. . . . 13

More About Direct Couplers. . . . 15

Efficient Chassis Layout. . . . 17

The Up and Down Receiver. . . . 25

Index to Volume 13. . . . 26

Analysis of Receiver Noise. . . . 27

Voltage Regulation. . . . 29

Search for Elusive Hi-Fi. . . . 33

List of Instruction Manuals. . . . 37

Odd Resistor Values. . . . 38

Short Wave Review. . . . 39

Speedy Query Service. . . . 42

1949 07-08
CONTENTS

British Television Equipment. . . . 5

Signal Tracer with Oomph! . . . . 9

Latest Radiolette Model. . . . 13

Grid-Dip Wavemeter. . . . 17

Small Sets for Short-waves. . . . 19

Fluo Tube Light Unit. . . . 22

Post-war Organs. . . . 23

Direct Currents. . . . 27

Free Technical Data Offers. . . . 32

A Simple Meg-Meter. . . . 33

How to Wind Honeycombs. . . . 35

Short-wave Review. . . . 37

New International Call Signs. . . . 41

Speedy Query Service. . . . 42

1949 09
CONTENTS

Universal Speaker Input Unit. . . . 5

Effective Valve Checker. . . . 9

Versatile Amplifier Design. . . . 11

Electronic Voltmeter. . . . 15

Pre-Amps for Talkie Work. . . . 19

Alternating Currents. . . . 21

Research Workers Needed. . . . 27

Moisture Control for Textiles. . . . 30

Revolution in America. . . . 31

Distortion — Does it Matter? . . . . 34

Electronic Music. . . . 37

World of Radio. . . . 38

Short Wave Review. . . . 39

Speedy Query Service. . . . 42

1949 10
CONTENTS

A Quality Amplifier. . . . 5

Practical "Q" Meter. . . . 11

Dodging the Transformer. . . . 15

Improved Noise Limiter. . . . 17

Alternating Current in Practice. . . . 19

Effective One-Valve Sets. . . . 27

Tuning Unit for Powerful Receiver. . . . 29

Short Wave Review. . . . 31

Bargain Corner. . . . 34

1949 11
CONTENTS

Universal Output Meter Unit. . . . 5

Customer’s Choice No. 1. . . . 9

"Ideal" P.U. Characteristics. . . . 11

Amateur Radio Activity. . . . 12

Interest In Gramo Reproduction. . . . 13

Applications of A.C. Practice. . . . 15

75-Watt Modulator. . . . 21

Trade Co-operation Essential. . . . 25

Frequency Records Available. . . . 27

Interesting Circuit Book. . . . 28

Shortwave Review. . . . 29

Shortwave Stations of U.S.A. .. . . 31

Speedy Query Service. . . . 34

1949 12
CONTENTS

"Super-Six" Amplifier. . . . 5

Sets of Yesterday and To-day. . . . 11

Make Your Own Records. . . . 15

Double-Coupled Versatile. . . . 21

The Astor Models G.R. & G.R.P. .. . . 22

Our Technical Directory. . . . 26

The "Clapp" Oscillator. . . . 28

How to Get Started. . . . 30

Commercials on the Ham Bands. . . . 32

Official Goodman's Baffle. . . . 36

Radio Theory (Transmission and Reception). . . . 37

Shortwave Review. . . . 45

Distortion Percentages. . . . 48

Speedy Queries. . . . 50

1950 04
No issue published

1950 05
No issue published


text:
Oberon/ETH Oberon/download

ETH Oberon Download Information

ETH Oberon can be installed on various platforms, either as a native operating system or on top of the operating system of the hosting machine. Until approximately 2019 it was available with source code from the central repository at ftp.inf.ethz.ch/pub/ETHOberon/ located at the ETH in Zürich, Switzerland and from a number of mirror sites. Each sub-directory listed contains an introductory text (usually named "readme.txt") with installation directions. The delivered compiler varies depending on the implementation.

Note: Apple changed the kernel interface for signal delivery. It was not possible to build an Oberon core which could run on top of both Darwin releases. The Darwin 5.1 port will not be updated in future Unix Oberon releases. Details.

Former mirror sites

 * University of Heidelberg, Germany
 * Sinica, Taiwan (sinica.edu.tw)
 * Washington University, USA

Oberon ports no longer updated

Disclaimer ETH disclaims all warranties with regard to this software, including all implied special, indirect or consequential damages or any damages whatsoever resulting from loss of use, data or profits, whether in an action of contract, negligence or other tortious action, arising out of or in connection with the use or performance of this software. Comments and experience reports are appreciated.

''26 Jan 2003 - Copyright © 2003 ETH Zürich. All rights reserved.''

E-Mail: oberon-web at inf.ethz.ch

Homepage: http://www.ethoberon.ethz.ch

title: Oberon/ETH Oberon/download


text:
User:Tyoyafud

 * My name is Jamie Shoemaker. As a linguist in the Washington, DC area, I became interested long ago in serious constructed languages.  One, in particular, struck me as brilliant above all the others:  Unilingua, as the late French inventor, Noubar Agapoff, called it (rather mysteriously, since the vocabulary of the language is a priori and not based on any existing human language, much less Latin).  I decided to take his language, rename it Mirad, more internally consistent; make it more readable in terms of the alphabet; add, amend, and subtract some things in the grammar and vocabulary; then publish it here as a Wikibook called Mirad Grammar for all the world to enjoy.  Although the grammar is a complete work, I am still making changes and additions.  Notably, I have built an 80,000+ word bi-directional dictionary website, which can be queried inside the Mirad Grammar.

 * If you are interested in Mirad, you can contact me on my discussion page and then we can exchange email addresses.

title: User:Tyoyafud


text:
Cookbook:Granola

Ingredients

 * ½ cup chopped Castilla walnuts
 * ½ cup chopped Indian walnuts
 * ½ cup of chopped almonds
 * ½ cup brown sugar
 * ½ cup wheat germ
 * ¾ cup olive oil
 * 1½ cup honey
 * 1 teaspoon salt
 * 4 cups rolled oats
 * ½ cup raisins
 * ½ cup blueberries

Procedure

 * 1) Combine all ingredients except the raisins and blueberries.
 * 2) Spread the mixture on a tray and bake for 1 hour at 250°F, stirring every 10 minutes.
 * 3) Let cool, then mix in the raisins and blueberries.

title: Cookbook:Granola