<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>neurotech1</author><text>One thing about the RPV&amp;#x2F;Quadcopter debate that is rarely mentioned is the reason why they don&amp;#x27;t use ADS-B transponders.&lt;p&gt;The FAA requires ADS-B trasponders to have high accuracy GPS, and that pushes the cost to over $2,000 per device. It would be logical for the FAA to relax the GPS requirement slightly, so a cheap GPS module is sufficient to alert nearby aircraft of RPV activity over a certain altitude (eg. 200ft AGL) These RPV-grade ADS-B transponders could use a limited signal output, to avoid nuisance pop-ups from longer distances. The transponder Mode-S ID uniquely identifies the RPV.&lt;p&gt;It would be possible for a transponder to use an alternate channel frequency, similar to how many General Aviation aircraft use 978Mhz ADS-B. Even with an alternate RPV channel, the RPV operators would still be alerted to regular aircraft operations.</text><parent_chain></parent_chain></comment><story><title>U.S. Will Require Drones to Be Registered</title><url>http://www.nbcnews.com/news/us-news/u-s-will-require-drones-be-registered-n446266</url></story>
<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>Malstrond</author><text>I&amp;#x27;m wondering how this will be implemented.&lt;p&gt;If used recreationally, they&amp;#x27;re R&amp;#x2F;C flying models, no matter how much the DJI marketing dept likes the term.
So will the the hobby that has been fine for decades be hit too?&lt;p&gt;Will you have to register a Cheerson CX-Stars that weighs 8g?&lt;p&gt;What about the congressional Special Rule for Model Aircraft? &amp;quot;Technically it&amp;#x27;s not the FAA so we can regulate everything!&amp;quot; or what?&lt;p&gt;They&amp;#x27;re also not that hard to build yourself and the components are shared with other things (e.g. motors are shared with R&amp;#x2F;C cars and the first popular flight controller was an Arduino with the sensors from a Wii Motion Plus or Nunchuk) so you can&amp;#x27;t ban the part sales.</text><parent_chain></parent_chain></comment><story><title>U.S. Will Require Drones to Be Registered</title><url>http://www.nbcnews.com/news/us-news/u-s-will-require-drones-be-registered-n446266</url></story>