Found in American documentation from the 1980s, this circuit operates in the frequency range 0.5 to 20 MHz. The power can be between 5 and 15 V.
This selective filter can be used with the previous receiver (CB19446E) in a simple remote-control system....
The purpose of this circuit is to measure the resistance of an antenna at the resonant frequency....
This circuit is from a Radio Electronics magazine from June 1969. The circuit uses two SCRS to...