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Author Topic: ICOM 718 HM36 HANDMIC WIRING???  (Read 1327 times)
VE7REN
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Posts: 469




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« on: November 21, 2005, 09:39:00 PM »

UUUMMMMM,WELL,I FORGOT!!can anyone tell me the color code for the plug pins for the hm36. i believe they were right-left.ground,blue,green,nothing,black,nothing,white.pin #8{center one}has nothing.i tried,and got it to key up,but no audio??? cant seem to find my manual??any help appreciated.
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2E0JHA
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Posts: 150




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« Reply #1 on: November 22, 2005, 01:51:44 AM »

i cant find the colour code for the wireing but pin 1 is mic input. 2 is dc output, 3 is frequency up ,down, 4 is main readout, 5 is ptt, 6 is ptt ground 7 is mic ground,and 8 is main readout af output.
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VE7REN
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Posts: 469




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« Reply #2 on: November 22, 2005, 04:28:29 AM »

i thought pin #2,4,8 are all left blank??
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K0BG
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« Reply #3 on: November 22, 2005, 06:03:14 AM »

Be VERY careful wiring any Icom microphone connector, especially the modular ones.

If you short out the 8 VDC line, even for a millisecond, the 8 V regulator will fail! This is NOT a cheap fix. Further, the mic hot has 8 V on it too, albeit in series with a resistor. Nonetheless, long term shorting this lead to ground (as some microphones do by virtue of their design) will also cause the regulator to fail.

Alan, KØBG
www.k0bg.com
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A9KW
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« Reply #4 on: November 22, 2005, 08:49:07 AM »

Pin 1 - white
pin 2 - no connection
pin 3 - black
pin 4 - no connection
pin 5 - green
pin 6 - blue
pin 7 - shield
pin 8 - no connection
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2E0JHA
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Posts: 150




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« Reply #5 on: November 22, 2005, 12:17:01 PM »

 i am sorry...my manual said nothing about anything being left blank, thats untill you look at the schematic diagram
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2E0JHA
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« Reply #6 on: November 22, 2005, 12:17:12 PM »

 i am sorry...my manual said nothing about anything being left blank, thats untill you look at the schematic diagram
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VE7REN
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Posts: 469




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« Reply #7 on: November 22, 2005, 04:14:09 PM »

A9KW.THANK YOU VERY MUCH.VE7REN.
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A9KW
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« Reply #8 on: November 22, 2005, 04:50:30 PM »

Your welcome
73s TOM
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