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2E0UDG
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Registered: Feb 2007
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Yaesu Modular Mic Plug to 8 Pin type

I currently have a MH-31 hand mic on my FT-847, does anyone know if the MH-48 DTMF mics work on this radio?

If they do work, the MH-48 I have currently has a modular plug on it and I wonder if anyone knows the colour coding for it to be fitted to the standard 8 pin mic plug please.

Thanks in advance for any assistance!

Posted: 14-01-09 11:55
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2E0UDG
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Thanks Rick, that would great!!:D

Posted: 14-01-09 15:51
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rick s81
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sorry dave, mine is modular to 4 pin round. just had a look.
i can give you the details from it but i dont think it will do you much good.

Posted: 14-01-09 17:20
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2E0UDG
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Dont think it will be any good Rick but thanks for taking the time to check!!;)

Posted: 14-01-09 17:40
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m3hku
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Registered: Jun 2005
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Hi,

Could you not get the pin out of the mic socket on each radio that the microphones are designed/wired for the then work the wiring out from there if you get mt drift.

You would download the manual for each of the relevant radios that the microphones work on and the will have the pinout of each socket type.

Work it out by pin number and not colour.

This site lists both mics and pinouts

http://www.r6-ru4montesecchieta.it/download/modifiche%20apparati/microfoni.htm

Sam

Posted: 14-01-09 21:45
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2E0UDG
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Thanks, thats a great site and I should be able to work it out from the two diagrams!!

Cheers:D

Posted: 14-01-09 21:54
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m3hku
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No problem , i have had a google around and can not find a pin out anywhere.

They are all for the other way putting an 8 pin mic on a rj socket radio.

Goodluck.

Sam

Posted: 14-01-09 21:59
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2E0UDG
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Looks like one has 8 wires and the other only has 6, so I guess that means they are not compatible!!

Thanks for the info though guys!!

Posted: 14-01-09 22:02
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m3hku
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Now i look at it again you will probably have a problem with the 8 volts vs 5 volts aswell.

This maybe a cheap easy solution

Link to dtmf

There is a Mic for the ft-847 see link below

MH36D8 is the number , the mic pinout shows. 5 volts

MH-36D8

Link to Mic

PIN 1 UP
PIN 2 + 5 VOLTS
PIN 3 DOWN
PIN 4 FAST
PIN 5 GROUND
PIN 6 PTT
PIN 7 MIC GROUND
PIN 8 MIC

MH-31

PIN 1 UP
PIN 2 + 5 VOLTS
PIN 3 DOWN
PIN 4 FAST
PIN 5 GROUND
PIN 6 PTT
PIN 7 MIC GROUND
PIN 8 MIC

Mh-48

PIN 1 SW2.(green)
PIN 2 SW1.(brown)
PIN 3 +8 VOLTS.(red)
PIN 4 GROUND.(screen/shield)
PIN 5 MIC.(white)
PIN 6 PTT.(blue)

Posted: 15-01-09 09:04
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2E0UDG
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Yeah, I knew there was one out there but the reason for the initial query was that I had a spare DTMF mic and wondered if I could rewire it, dont really want to spend cash on a new one!!

Thanks for all your help though, very much appreciated!;)

Posted: 19-01-09 22:12
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