The DIYtransceiver front end
receive and transmit circuits.
*note* the input into the laptop computer,
recording the transmit audio as received on
another radio out of view. Transmitting on
the IF frequency of 4.1936 MHz. using every
jumper cable in the shack. Case for radio is
top row to the right of the oscilloscopes,
it was an old 286 IBM clone. Microphone is
homebrewed from an old scrap unit.