TRANSMISSION_INDICATOR

Published:2009/7/2 2:10:00 Author:May | From:SeekIC

Everytime the push-to-talk button is closed the light will go on. The antenna samples the output RF from the transmitter. That signal is then rectifted (detected) by germanium diode D1, and used to charge capacitor C2. The dc output is used to trigger a small siliconcontrolled rectifier (SCR1), which permits the current to flow through the small pilot lamp. For lower-power applications, such as CB radio, the antenna will have to be close-coupled to the antenna.



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