|[AMRadio] Hot microphone|
w4pqw at cox.net
Sun Aug 1 13:17:44 EDT 2010
Pin 2 is usually used for push-to-talk. that means that they apply 124VDC
to the top of transmit relay,bottom of relay winding goes to mic connector
pin 2 ,,when you press the mic transmit button,pin 2 goes to ground ,closing
the relay and going into transmit mode..I think this is a normal
----- Original Message -----
From: "Geoff Edmonson" <w5omr at att.net>
To: "Discussion of AM Radio in the Amateur Service"
<amradio at mailman.qth.net>
Sent: Sunday, August 01, 2010 11:36 AM
Subject: Re: [AMRadio] Hot microphone
> On 08/01/2010 11:11 AM, Mark & Paula wrote:
>> Collins 32V1 I'm reading 124 VDC on mic connection pin 2 ? Any ideas
>> would be helpful.
> AC plug properly polarized?
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