It’s a 40 meter (7 MHz) QRP or low power transceiver in which the transmitter ... a J310 FET — between the two halves of the circuit. It’s no slouch as QRP radios go, having clocked up ...

MSylvain59] likes to tear down old surplus, and in the video below, he takes apart a German transceiver known as a U-600M. From the outside, it looks like an unremarkable gray box, especially ...