3-tube receiver 2 (T1603E)

Using known tubes, this receiver was found in a Radio Electronics from 1949. The circuit does not include the power supply.

VCO 2 (CB9426E)
This voltage controlled oscillator, which can be used as a shield, generates signals in the 1.5...
FM Demodulator TBA120 (CB21885E)
This circuit was obtained from the 1976 Siemens integrated circuits manual. It is the circuit for...
5-Range Microammeter (CB25229E)
This instrumentation circuit was found in the September 1989 Radio Electronics magazine. The...