The two integrated circuits used in this configuration can still be found. The frequencies of the effects are determined by the capacitors, which may have their values changed.
With the used coils and the power transistor this circuit amplifies the 5 W of a 11-meter...
This circuit can be used in PLL, frequency synthesizer in FM and VHF receivers, reducing a...
This circuit is from a Popular Electronics from the 90s. The circuit has a tone frequency...