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Just a heads up for proper wiring.
I believe this should be in the paperwork that came with the mic.
I don't believe there's any 8v to that mic. Pretty much like a standard four pin.

"The ‘soft touch’ PTT switch is wired to pins 3 and 4 for transmitter control with the microphone signal fed to pins 1 and 2 of the 4 pin XLR. The Heil HM -12 uses the HEIL CC-1 Connecting Cables."

It looks like it should be wired this way.
PTT, GND
Audio, GND

I have the same mic, sort of. It's the GM-5 with the wide and narrow switch, with the soft touch PTT. There's no voltage from radio, but then it's on a Kenwood. I really don't believe any of the four pin HF rigs have 8v from the radio. Someone correct me if I'm wrong.

[QUOTE="K9GAS, post: 344294, member: 21895"] Just a heads up for proper wiring. I believe this should be in the paperwork that came with the mic. I don't believe there's any 8v to that mic. Pretty much like a standard four pin. "The ‘soft touch’ PTT switch is wired to pins 3 and 4 for transmitter control with the microphone signal fed to pins 1 and 2 of the 4 pin XLR. The Heil HM -12 uses the HEIL CC-1 Connecting Cables." It looks like it should be wired this way. PTT, GND Audio, GND I have the same mic, sort of. It's the GM-5 with the wide and narrow switch, with the soft touch PTT. There's no voltage from radio, but then it's on a Kenwood. I really don't believe any of the four pin HF rigs have 8v from the radio. Someone correct me if I'm wrong. [/QUOTE]

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