PTT or Push to Talk is the control that switches the speak-hear function on a transceiver. This circuit was found in the magazine of radio amateurs 73, in an edition of the 90s.
June 2017 - These new AVX capacitors are suitable for filter applications, considerably reducing...
This circuit shows how to use the TTL IC 7790 to divide a square TTL signal by 7. Duty cycle is...
This circuit for some amps was found in a 90s Radio Electronics. The voltage can be between 6 and 25 V...