Strobe (T461E)

Found in Popular Electronics from August 1968, this circuit makes use of a strobe tube from the time.

470 mW Amplifier (CB4935E)
This small transistor amplifier was found in an ancient American documentation. Transistors can be replaced...
455 kHz Oscillator (CB4240E)
This simple oscillator generates a 455 kHz signal. The circuit is from an 80's documentation and its...
FET Field Strength Meter (CB12121E)
We found this circuit in an English publication in 1979. The diode should preferably be germanium and...