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Intercom squelch problem

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glipaz

Joined: 11 Jan 2011
Posts: 111

Posted: Sat Apr 02, 2016 8:01 pm Post subject: Intercom squelch problem

I have a Sigtronics SAS 440 intercom and an Icom radio.  Lately, when I squelch the intercom, it locks out the mics on pilot and copilot.  I sent intercom to the manufacturer and they tested it as fully functioning.  On recent flight ATC could not hear me until I bypassed the intercom and plugged directly through the radio.  What could cause that if not the intercom?

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pfstelwagon(at)earthlink.
Guest

Posted: Sat Apr 02, 2016 8:54 pm Post subject: Intercom squelch problem

Check the wiring carefully. If you are using VO X i would switch to push to talk if you are in a noisy aircraft.



Frank



Sent from my iPhone



 	  Quote: 	
		   On Apr 2, 2016, at 21:01, "glipaz" <glipaz(at)yahoo.com> wrote:

 

 

 

 I have a Sigtronics SAS 440 intercom and an Icom radio.  Lately, when I squelch the intercom, it locks out the mics on pilot and copilot.  I sent intercom to the manufacturer and they tested it as fully functioning.  On recent flight ATC could not hear me until I bypassed the intercom and plugged directly through the radio.  What could cause that if not the intercom?

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=454484#454484

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glipaz

Joined: 11 Jan 2011
Posts: 111

Posted: Sat Apr 02, 2016 9:20 pm Post subject: Re: Intercom squelch problem

Thanks Frank. I have vox which has worked fine for 7 years until now. Any idea where in the wiring it could be?

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pfstelwagon(at)earthlink.
Guest

Posted: Sat Apr 02, 2016 10:02 pm Post subject: Intercom squelch problem

Check shielding grounds and make all the jacks have good insulating washers and are not contacting structure. Remember shields are only grounded at the intercom end.



Frank



Sent from my iPhone



 	  Quote: 	
		   On Apr 2, 2016, at 22:20, "glipaz" <glipaz(at)yahoo.com> wrote:

 

 

 

 Thanks Frank.  I have vox which has worked fine for 7 years until now.  Any idea where in the wiring it could be?

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=454489#454489

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