Today's Message Index:
----------------------
 
     1. 08:29 AM - Garmin "Aviation" data protocol (Gordon Arbeitman)
     2. 10:38 PM - Re: DIY transponder bench test (jetboy)
 
 
 

Message 1


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Time: 
08:29:52 AM PST US
From: 
Gordon Arbeitman <gordona23@earthlink.net>
Subject: 
Garmin "Aviation" data protocol
      
      
      Thanks to those who answered.  I had read (somewhere ?)  that the GX50 
      to 396/496 wouldn't work.  Thanks for setting me straight.  I'll wire it 
      up next week, while the plane is down for annual.
      
      

Message 2


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Time: 
10:38:04 PM PST US
Subject: 
Re: DIY transponder bench test
From: 
"jetboy" <sanson.r@xtra.co.nz>
      
      
      sorry you can't test much at home on a transponder. Many units do not transmit
      when in 'test' or 'ident' so even if you have a reception device handy you wont
      find anything. However if you have an antenna connected and the unit gets interrogated
      by other sources you may be able to hear the HV power supply whistling
      under load as the cavity tube sends the reply. If its all hooked up to the
      encoder you may be able to get a check from a friendly TCAS equipped plane or
      a fellow aircraft owner that has a passive alert system available. Do not put
      any equipment or body parts too close to the antenna unless you were about to
      replace them anyway.
      
      Ralph, radio tech & EMR worker
      
      --------
      Ralph - CH701 / 2200a
      
      
      Read this topic online here:
      
      http://forums.matronics.com/viewtopic.php?p=222926#222926
      
      








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