[ICOM] Ic-706IIG HM--103 Microphone

[Alex Eban]

This is usual in microphones used around higher powered  radios. There is
one called mike ground return which is connected at both ends and another
one around the pair which is a simple Faraday shield. That one is connected
at one end only, usually at the radio end of the cable. Try to have a look
at the radio schematic: chances are you'll find another ground pin there. If
yes, then use whatever wire comes from the microphone element a mike ground
return, and connect the one ended wire to the chassis  ground. It was a very
widespread configuration on military radios, like the GRG-106 SSB radio. As
a side line the microphone ground return on those runs along the hot wire
from the mike all the way inside to the mike amplifier circuitry on the
signal board with no other connection along the way.
In your case that red wire is probably just the Faraday shield.
Alex	4Z5KS

-----Original Message-----
From: icom-bounces at mailman.qth.net [mailto:icom-bounces at mailman.qth.net] On
Behalf Of Clif Holland
Sent: Friday, March 25, 2005 3:00 AM
To: ICOM Reflector
Subject: Re: [ICOM] Ic-706IIG HM--103 Microphone

It's not a red wire, look closely, it's a shield with red insulation around
it....

Clif Holland, KA5IPF
www.avvid.com


----- Original Message -----
From: "Oldtimer" <res075cz at gte.net>
To: "ICOM Reflector" <icom at mailman.qth.net>
Sent: Thursday, March 24, 2005 6:13 PM
Subject: Re: [ICOM] Ic-706IIG HM--103 Microphone


> Thank you, Mac. I just opened up the microphone and found the strangest 
> thing. At the plug end of the microphone cable there is a red wire along 
> with the other wires. But I opened up the microphone and there is no red 
> wire coming out of the cable in to the microphone. Very strange. But I 
> will connect up the other wires. I am just curious why I have a red wire 
> at one end of the cable and none at the other. There is just no place for 
> it to go.
>
> Thanks again to all who answered. I appreciate your help.
>
> 73 de Jim, K5ROV
>
> James (Jim) Parsons, CMSgt, USAF, Ret.
> Ham for over 60 years, 80 % CW, 10 % digital, 10 % SSB
> ARMS, ARRL,  Ex: W1RLA, K5FBB, K4FEO,
> SV0WN (Crete), SV0WN (Rhodes), DL4NC, DL4JP, KA2FC (Japan) ,
> KA2JP (Japan).
> John 3-16
>
>
>
>
> ----- Original Message ----- 
> From: "D C Macdonald" <k2gkk at hotmail.com>
> To: <icom at mailman.qth.net>
> Sent: Thursday, March 24, 2005 5:56 PM
> Subject: Re: [ICOM] Ic-706IIG HM--103 Microphone
>
>
>>I just checked the HM-103 mic that came with the
>> IC-703 I just received from Bill Diamond (WR0T).
>>
>> The color pattern agrees with that sent by Mike (KD9KC).
>>
>> D C (Mac) Macdonald (Capt, USAF-ret)
>> Licensed since 1953
>> ex-DL4AM
>>
>>
>>
>> ----Original Message Follows----
>> From: "Oldtimer" <res075cz at gte.net>
>> Reply-To: ICOM Reflector <icom at mailman.qth.net>
>> To: "ICOM Reflector" <icom at mailman.qth.net>
>> Subject: Re: [ICOM] Ic-706IIG HM--103 Microphone
>> Date: Thu, 24 Mar 2005 17:46:45 -0600
>>
>> Thank you, Mike. The only trouble is that you show five leads including 
>> the shield. I have six leads and one of them is red, which you do not 
>> show. I am confused about that. I do appreciate your help.
>>
>> 73 de Jim, K5ROV
>>
>> James (Jim) Parsons, CMSgt, USAF, Ret.
>> Ham for over 60 years, 80 % CW, 10 % digital, 10 % SSB
>> ARMS, ARRL,  Ex: W1RLA, K5FBB, K4FEO,
>> SV0WN (Crete), SV0WN (Rhodes), DL4NC, DL4JP, KA2FC (Japan) ,
>> KA2JP (Japan).
>> John 3-16
>>
>>
>> ----- Original Message ----- From: "Michael P. Olbrisch" 
>> <mike2004 at elp.rr.com>
>> To: "'ICOM Reflector'" <icom at mailman.qth.net>
>> Sent: Thursday, March 24, 2005 5:25 PM
>> Subject: RE: [ICOM] Ic-706IIG HM--103 Microphone
>>
>>
>>>
>>>
>>>>-----Original Message-----
>>>>From: icom-bounces at mailman.qth.net
>>>>[mailto:icom-bounces at mailman.qth.net] On Behalf Of Oldtimer
>>>>Sent: Thursday, March 24, 2005 11:01 PM
>>>>To: Icom
>>>>Subject: [ICOM] Ic-706IIG HM--103 Microphone
>>>>
>>>>My HM-103 microphone plug for the IC-706IIG had the hasp
>>>>broken off.
>>>
>>>I am holding an HM-103 in my hand.
>>>
>>>Looking at the RJ-45 - locking tab down - pins to the top - cord to the
>>>bottom - pins left to right are:
>>>
>>>1.  Blank (NC)
>>>
>>>2.  Black
>>>
>>>3.  Blank (NC)
>>>
>>>4.  Green
>>>
>>>5.  Shield
>>>
>>>6.  White
>>>
>>>7.  Blue
>>>
>>>8.  Blank (NC)
>>>
>>>Hope this helps.
>>>
>>>Mike.  KD9KC
>>>El Paso, TX.
>>>
>>>
>>>
>>>----
>>>Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
>>>Icom Users Net: Sundays, 1700Z, 14.316 MHz
>>>Icom FAQ: http://www.qsl.net/icom/
>>>
>>
>>
>> ----
>> Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
>> Icom Users Net: Sundays, 1700Z, 14.316 MHz
>> Icom FAQ: http://www.qsl.net/icom/
>>
>>
>> ----
>> Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
>> Icom Users Net: Sundays, 1700Z, 14.316 MHz
>> Icom FAQ: http://www.qsl.net/icom/
>>
>
>
> ----
> Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
> Icom Users Net: Sundays, 1700Z, 14.316 MHz
> Icom FAQ: http://www.qsl.net/icom/ 

----
Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
Icom Users Net: Sundays, 1700Z, 14.316 MHz
Icom FAQ: http://www.qsl.net/icom/

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