Avionics-List Digest Archive

Thu 09/09/04


Total Messages Posted: 1



Today's Message Index:
----------------------
 
     1. 09:29 PM - Transponder Issue (Paul McAllister)
 
 
 


Message 1



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    Time: 09:29:39 PM PST US
    From: "Paul McAllister" <paul.mcallister@qia.net>
    Subject: Transponder Issue
          
      --> Avionics-List message posted by: "Paul McAllister" <paul.mcallister@qia.net>
      
      Hi all,
      
      I have UPS SL70 mounted in my composite Europa.  Up until recently it has operated
      faultlessly, but I a recent trip between Wisconsin and Arkansas I had several
      complaints from ATC that they could not see my transponder, even at 9000'.
      
      I am unsure if I have a problem or not, the antenna is mounted in the baggage bay,
      it is a simple "spike" type mounted on a piece of 6 x 6 aluminum.  the cable
      run is fairly short and it is RG400.  I have reseated the transponder, the
      connection to the coax and to the antenna and I can't spot any obvious problem.
      
      During the times that ATC were complaining I was seeing a solid reply to there
      integrations so the receiver seems to be working fine.  I'd appreciate anyone's
      input on things to check or trouble shooting ideas.
      
      Thanks,  Paul
      
      
      
      
      
      

    

    


    

    

    

    

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