C13 radio

Frequency: 1.5 to 12MHz
Power output: 20w

Receiver block diagram (100k)
Transmitter block diagram (117k)
Transmitter circuit part A (113k)
Transmitter circuit part B (118k)
Receiver circuit part A (103k)
Receiver circuit part B (123k)
Tuning Unit (48k)
Power supply (86k)