Position: Index > Oscillator Circuit >

AF_OSCILLATOR_MONITORS_CW

2016-08-14 15:16  
Declaration:We aim to transmit more information by carrying articles . We will delete it soon, if we are involved in the problems of article content ,copyright or other problems.


AF_OSCILLATOR_MONITORS_CW
AF_OSCILLATOR_MONITORS_CW
Can be added to any transceiver not already having built-in sidetone oscillator, to hear keying of transmitter. RF input from transmitter is rectified by CR1 to provideabout 6-VDC supply. Keying of carrier on and off tums NE555 AF oscillator on and off correspondingly.-J. Amold, A CW Monitorfor the Swan 270, QST, Aug. 1976, p 44.