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Com issues - resolved

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berkut13(at)berkut13.com
Guest

Posted: Fri Feb 16, 2007 8:54 pm Post subject: Com issues - resolved

Well gang...it's fixed.



I added 150ohm resistors to all input audio leads into the panel. 

Everything is living together quite nicely now.  I guess something in the 

combination was not playing well with the new radio.



However, there was one wild card that might also have something to do with 

it.  While I was removing, moving, installing, and re-installing the pins in 

the 134's connector, one of the ground leads (mic I think) broke off a pin. 

I was forced to strip and crimp a new molex pin on there and re-secure. 

This was done in the same operation as the resistors.  After all that, the 

audio was loud and clear with all radios mixed in, regardless of the 

combination.  I'm not convinced this was the issue, since the radio did work 

correctly by itself.



So...was it the resistors?...was it a bad ground?...was it a gremlin? 

Personally, I don't care anymore...it's fixed!



Thanks for all the help, everyone.  Nothing like beating your head against 

the wall in a cold hangar.



James Redmon

Berkut #013  N97TX

http://www.berkut13.com

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douglist(at)macnauchtan.c
Guest

Posted: Sat Feb 17, 2007 10:29 am Post subject: Com issues - resolved

At 22:47 -0600 2/16/07, <berkut13(at)berkut13.com> wrote:

 	  Quote: 	
		  So...was it the resistors?...was it a bad ground?...was it a gremlin? Personally, I don't care anymore...it's fixed!


	


A flight instructor where I last did avionics for profit was also a personal boat enthusiast.



His expressed belief was "ALL electric problems in boats and automobiles are CAUSED by bad grounds."



After a couple of beers one night we agreed that airplanes should be included in the ALL part of that.



-- 

-->  The best programming tool is a soldering iron <--

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wjrhamilton(at)optusnet.c
Guest

Posted: Sat Feb 17, 2007 11:17 pm Post subject: Com issues - resolved

All,

 Ain't that (almost) the truth.

 If you look around the supply houses, on eBay from time to time, etc., you will find a set of the answers to clean contacts, including cleaning ring terminals.

 They are a shaft that goes in a drill, the shank comes in #30, 40 etc., and has an abrasive bundle around the shank. The abrasive surfaces are arranged so that they scour the contact  area. Haven't has a problem with a high resistance contact since I bought a set.

 Sorry, no name on them.

 Cheers,

 Bill Hamilton



  



 At 05:27 AM 18/02/2007, you wrote:

 [quote]--> Avionics-List message posted by: Doug McNutt <douglist(at)macnauchtan.com>



 At 22:47 -0600 2/16/07, <berkut13(at)berkut13.com> wrote:

 >So...was it the resistors?...was it a bad ground?...was it a gremlin? Personally, I don't care anymore...it's fixed!



 A flight instructor where I last did avionics for profit was also a personal boat enthusiast.



 His expressed belief was "ALL electric problems in boats and automobiles are CAUSED by bad grounds."



 After a couple of beers one night we agreed that airplanes should be included in the ALL part of that.



 -- 

 -->  The best programming tool is a soldering iron <--



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