This QST circuit generates 4 frequency signals according to the crystals used. Transistors admit equivalents although the indicated types can still be found with some ease.
This is one of the possible receivers for the CB4582E transmitter. The circuit is from 1995...
In this circuit the capacitor under test is charged at switch position A and then discharged...
August 2017 - Texas Instruments is announcing the availability by Mouser Electronics of its new...