 What was the issue with having Pinov on the communication system?
General Finogenov notified Major Winship that the underground blast was scheduled for the following morning. Major Winship, after receiving the message, discussed precautions with the three other Americans. Next morning, before the sunlight exploded, the four of them donned their space suits and went and sat outside the dome, waiting. Major Winship attempted unsuccessfully to communicate with Base Gagarin. "Is Pinov," came the reply. "Help?" " Nyet ," said Major Winship, exhausting his Russian. When—boom?" "Is Pinov," came the reply. "When?" "Boom—boom!" said Pinov. "They've got Pinov on emergency watch this morning," he explained to the other Americans. "He's done it deliberately," said Capt. Wilkins, the eldest of the four Americans. "Ah, it's all Russian. "I'll try again," Major Winship said and switched to the emergency channel. "Base Gagarin? "Is Pinov. "Pinov's still there," Major Winship said. He crossed with the floating moon-motion to the airlock and entered, closing the door behind him. "Is Pinov," came the supremely relaxed voice. Air currents whisked it away and plastered it against a riveted seam of the dome. Major Winship said, "they should have made these things more flexible." Squeezed in front of the massive transmitter, Capt. Wilkins had energized the circuits.
 He didn't speak English
 He rarely paid attention well enough to handle the communications.  He didn't speak English  He didn't know how to work the system properly.  He always selected the wrong communcations channel