This circuit is from the time when cars used contact breakers. This 80's version measures the dwell angle of the contact breaker for dwell adjustment using an era integrated circuit, the LM3917.
This VFO (Variable Frequency Oscillator ) has the output frequency controlled by a potentiometer....
TQP92xx series power amplifiers for frequencies in the typical range of 1,805 -2,200 MHz can be...
This circuit, found in US documentation, can measure the power of transmitters up to 10 W, given...