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High pitch whine from KLN90 GPS

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gmkonrad

Joined: 08 Jul 2006
Posts: 1
Location: Howell, Michigan

Posted: Sat May 16, 2009 6:43 am Post subject: High pitch whine from KLN90 GPS

I recently installed a KLN90 GPS (I know its old, but it is better than my old loran) and it has a high pitch whine.  I noticed the whine when I was wiring the gps on the bench, thinking I would not hear the noise in the plane-wrong.  Would some kind of filter eliminate this or does it need to go to the shop ?  I can hear the whine thru the headsets also and it gets annoying.  Any ideas ?



Thanks in advance,



Gary

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nuckolls.bob(at)aeroelect
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Posted: Sun May 17, 2009 6:33 pm Post subject: High pitch whine from KLN90 GPS

At 09:43 AM 5/16/2009, you wrote:

 	  Quote: 	
		  



I recently installed a KLN90 GPS (I know its old, but it is better 

than my old loran) and it has a high pitch whine.  I noticed the 

whine when I was wiring the gps on the bench, thinking I would not 

hear the noise in the plane-wrong.  Would some kind of filter 

eliminate this or does it need to go to the shop ?  I can hear the 

whine thru the headsets also and it gets annoying.  Any ideas ?


	


   You need to deduce the propagation mode

   for the noise as described in chapter 16.

        Bob . . .



        ----------------------------------------)

        ( . . .  a long habit of not thinking   )

        ( a thing wrong, gives it a superficial )

        ( appearance of being right . . .       )

        (                                       )

        (                  -Thomas Paine 1776-  )

        ----------------------------------------

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