Question about ICOM Informatique IC-F121 VHF 136-174MHz mobile 128Ch 50W Microphone

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When using the OPC617 external cable, what solder pads need jumpered for PTT and mic audio?

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To use OPC-617 option cable:1- open your CS-F100 Rev 1.7, read your radio.2- click on Common >> Expert >>EPTT/FTSW change to EPTT, 3- On the main board , look into the left side of the board you see pad D, solder ittogether, if you use pad F, you shou.ld put a 47K ohm resistor.You can follow this link for your pin out connection.http://www.two-way-radio-tools.com/icom-mc1700-mdc.html
and download ver sion Rev 1.7 from herehttp://www.two-way-radio-tools.com/icom-softwares.html
HP

Posted on Jan 30, 2012

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Posted on Jan 02, 2017

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SOURCE: Audio Technica PRO-35: need wiring diagram for mic end

If you feel the shield goes to the middle, try red on one terminal and white on the other. If not, reverse it.

If it's labeled on the circuit board...pin 1, pin 2, pin 3, then pin 1 is usually ground, pin 2 is hot (red), and pin 3 is cold.

Posted on Apr 15, 2010

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SOURCE: i have samsung sgh-d600 mic pads destroy. whre i jumper it

I have samsung sgh-d600 mic pads destroy. whre i jumper it

Posted on Jun 08, 2010

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I wish you provided more information to explain your mic problem. A mic may not be working because of any of the following:
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Hi,

This is the pinning of the GM-series.
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