[Icom] Help for ICOM HM-12 Microphone
Ken Meyer
[email protected]
Tue, 26 Nov 2002 15:14:28 -0600
I have a brand new Icom HM-12 mic,
Still in the plastic wrap, $45.00 shipped
to your door via UPS ground.
73 Ken [email protected]
----- Original Message -----
From: <[email protected]>
To: <[email protected]>
Sent: Tuesday, November 26, 2002 2:04 PM
Subject: [Icom] Help for ICOM HM-12 Microphone
I pulled the microphone apart and discovered what appears to be an electret
element so I tried putting in an electret from Radio Shack when I found the
red wire had 8.0 Volts coming through a 1K resistor it seemed to match the
schematic for an electret mike. After puting it back together using the RS
element and a .047 cap in series to the audio line I had modulation once
again, so I think I am on the right track, but it is very low output.
So I need some advice or I still need a HM-12 mobile mike for the ICOM 725
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