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.
November 2016 - The On Semiconductor Reference Development Kit and WDK1.0GEVK Reference Kit can...
We find this circuit in an American 80's documentation. No further information about the...
The circuit shown in the figure is in fact an excellent symmetrical switching source capable of...