Transistorized AM radio (CB8392E)

Found in a 1980s amateur radio QST magazine, this is the conventional circuit of a medium-wave radio. Coils and transformers are commercial types.

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Divider by 5 Counter (CB25363E)
This TTL circuit was found in the December 1990 issue of Radio Electronics magazine. The circuit has...
Full wave dimmer with SCR (CB7219E)
Found in an Electronics World of 1968 this circuit can use any SCR and diodes depending on the...
Wireless CW Monitor (CB4179E)
Placed near a telegraphic transmitter (CW) and with a small antenna or pickup, it reproduces the...