I’m not quite sure what the function of this Soviet electronic project was. It appeared in the magazine Моделист конструктор (Model Designer) issue number 7 of 1968, with the cryptic title “In the air – the coach.” The magazine covers model building, so at first I assumed that it was a radio control transmitter and receiver. But the transmitter appears to be connected to a microphone, and the receiver is connected to an earphone. So it appears to be intended for voice communication, and it appears to be for the 10 meter amateur band. The text mentions “300 – 500 meters,” so I assume that’s the intended range of the set. Elsewhere in the magazine is a discussion of “what is the procedure for registration and operation of amateur receiving and transmitting radio stations.”

In any event, the illustrations speak for themselves, and presumably some young comrades put together this QRP 10 meter AM station. Here’s the schematic and pictorial diagrams of the transmitter:

And here are the schematic and pictorial diagrams of the receiver: