[ARC5] Carbon mic pops

J Mcvey ac2eu at yahoo.com
Mon Nov 28 22:03:15 EST 2016


My guess is that you have an open cap in the Mic DC filter circuit. 
 

    On Monday, November 28, 2016 9:53 PM, "hwhall at compuserve.com" <hwhall at compuserve.com> wrote:
 

 I have a question about use of carbon mics in circuits like interphones. Mics like the T-17 leave the mic "battery" current circuit open until the PTT is pressed to speak. But the contact closure creates a huge pop in the headphones attached to the amp output. Does anyone know how this was dealt with or did they just live with the earsplitting pops??

Wayne
WB4OGM

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