2way BB Audio Interupt

149

01:10:01

Circuit to Interupt 2way Business Band Radio Audio in vehicle . We developed for Police ,Fire and Ambulance vehicles to kill feedback during Radio Transmit. Dc source in diagram simulates the ptt connection. Ptt it is connected to base of Q1 and goes positive (forward biased) when mic key is pressed opening the Audio side ground wire. When released Ground is once again conducting to speaker ground.

published 9 years ago

Venus303

9 years ago

Siemka

Username2345

9 years ago

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