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.
We found this configuration in an American 80's documentation. The circuit can be implemented with an...
This CMOS circuit was found in the July 1990 Radio Electronics magazine. Power is for a 12V...
This small transmitter for the medium wave range (MW) was found in a 1980 publication. Its signals...