[Elecraft] Icom SM-8 Mic to K3 Need wiring advice

[G. Beat]

Dean - 



It is not unusual for newer microphones to separate the microphone  shield/ground for Audio from the DC ground used for Push to Talk (PTT) switching. 



Bob Heil's Heil wire (microphone cable) has a shielded conductor for the microphone audio and 

outside that shield are a red and blakc wire for the PTT (red +; black for ground or -) 

http://www.universal-radio.com/catalog/parts/26454065.html 



For your Icom SM-8 wiring project to your Elecraft K3, I would like to make one recommendation. 

Leave the Icom SM-8 microphone connector as fac tory standard ! 



BUILD an adapter cable with an 8-pin female Foster (circular) connector to connector your Icom SM-8 and 

an 8-pin male Foster (circular) connector for connecting Elecraft K3. 

http://www.universal-radio.com/catalog/parts/micconn.html 



Heil Sound's quality 8-pin male Foster (circular) connector ! 

http://www.universal-radio.com/catalog/parts/4065.html 



Greg 

w9gb 



----- Original Message ----- 
From: "Dean" <ok at mytargets.com>   
To: elecraft at mailman.qth.net 
Sent: Sunday, October 09 , 2010 07 :06 P M 
Subject: Icom SM-8 Mic to K3 Need wiring advice 

I have a new condition Icom SM-8 Base Microphone, that I would like to wire to my Elecraft K3.   

I have the wiring diagrams for both microphone and radio, 

but the Icom diagram (and schematic) shows a separate mic ground and regular ground and I am not sure how to handle that. 

If anybody has experience wiring this mic, your help would be appreciated. 

Thanks! 

Dean 
_______________________________________________ 
Elecraft mailing list 
Post to: Elecraft at mailman.qth.net 
http://mailman.qth.net/mailman/listinfo/elecraft 
You must be a subscriber to post. 
Elecraft web page: http://www.elecraft.com