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Author Topic: Homemade Heil Proset Adapter? Anyone done this?  (Read 1532 times)
W4JST
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« on: October 27, 2012, 06:48:14 PM »

I have a Heil Proset 4 but no microphone adapter. With the adapter being around $20+ new I would like to make my own.

Has anyone made one? Is it just a matter of wiring to the correct pins for TX, audio, and the headphone jack or does there need to be a voltage change or a resistor/capacitor anything added in there?

May do this for a Yaesu FT-857D, 817ND or Kenwood TS-2000.
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G0MGX
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« Reply #1 on: October 27, 2012, 10:47:19 PM »

Hi

I recently bought a proset plus secondhand, it came with the wrong adaptor for my radios so I simply cut the connectors off and replaced with the ones for my rig - did away with an adaptor completely.

There's no components in the adaptor, the mic cable is a single core screened and the headphone lead a dual core version of the same.

Mark. G0MGX
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W4JST
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« Reply #2 on: October 28, 2012, 06:35:31 AM »

Thanks for the info!

Do I need to use shielded cable?

Two conductor for the mic and three conductor for the stereo headphones.
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W4JST
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« Reply #3 on: October 28, 2012, 06:47:29 AM »

I can plug the headphones right into the radio, I don't need to do any wiring there.

So I just need a mono, 2 conductor, cable for Mic/Audio and Mic ground for the mic.

And a 2 conductor mono plug for TX and TX ground in case I want to plug in a hand or footswitch.

Right?

Both of those need to be shielded cable or not really?
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G0MGX
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« Reply #4 on: October 28, 2012, 08:56:23 AM »

I would suggest shielded cable is always a good plan for audio at that impedence, so yes - you should use shielded cable.

Mark.
G0MGX
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W4JST
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« Reply #5 on: October 28, 2012, 04:38:32 PM »

Thank you!
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