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Radio receiver burn out

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RVBUILDER1

Joined: 07 Aug 2010
Posts: 2

Posted: Sat Aug 27, 2011 10:01 am Post subject: Radio receiver burn out

While flying the other day my radio stopped receiving but would transmit ok. I sent it to the factory and they said the the radio looked like the antenna had a lighting strike because it was extremely fried inside. 

   I had no strike and have never flown in bad weather. 

  What could cause this? 



   Hear are some other observations



  1) When my strobe is on when it flashes my amp meter discharges with each flash.

  2) When I taxi past the antenna for the field I can hear the field identifer in the headset but I am not on the frequency?

 



  any ideas?



     John

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nuckolls.bob(at)aeroelect
Guest

Posted: Thu Sep 08, 2011 11:55 am Post subject: Radio receiver burn out

At 01:02 PM 8/27/2011, you wrote:

 	  Quote: 	
		  



While flying the other day my radio stopped receiving but would 

transmit ok. I sent it to the factory and they said the the radio 

looked like the antenna had a lighting strike because it was 

extremely fried inside.

    I had no strike and have never flown in bad weather.

   What could cause this?


	


   That's a real mystery . . .



 	  Quote: 	
		      Hear are some other observations



   1) When my strobe is on when it flashes my amp meter discharges 

 with each flash.


	


    'Discharges' or just wiggles? It is not uncommon

    for the ammeter to show some response to cyclic

    current draw to the system.



 	  Quote: 	
		     2) When I taxi past the antenna for the field I can hear the 

 field identifer in the headset but I am not on the frequency?


	


    This might be leaking into your audio system. As

    I write these words, I can reach up and touch the

    volume control knob of my amplified computer speakers

    and hear the broadcast material from a 5KW radio station

    less than a mile away. My fingers provide extra "antenna"

    for conducting an interference into the audio system.

    I suspect that your proximity to a strong signal triggers

    the transient interference event.



    Bob . . .

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