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3 transponder wires

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Richard Pike

Joined: 09 Jan 2006
Posts: 1671
Location: Blountville, Tennessee

Posted: Tue Sep 21, 2010 7:38 pm Post subject: 3 transponder wires

Finishing up the wiring, hooking up the transponder, and I have to confess that whoever took the transponder out of the wreck (probably me) failed to note down enough information about how to hook it back up. 

Coming off the tray is a wire that is obviously the ground, no problem. Another 16 gauge wire is obviously the power supply, once again no problem. But there is one wire left over, it is about 20 gauge, and I have no idea if it goes to hot or ground. Probably hot, but...

The transponder is an RT359A 300, probably out of a Cessna.



Will go around to the local avionics shops tomorrow and ask dumb questions unless someone on here already has an answer.



Richard Pike

MKIII N420P (420ldPoops)

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rickofudall

Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA

Posted: Tue Sep 21, 2010 8:56 pm Post subject: 3 transponder wires

Richard, Don't you have to have an input from the sensitive altimeter (the sealed box type, not the Kohlsman type)?



Rick Girard



On Tue, Sep 21, 2010 at 10:38 PM, Richard Pike <richard(at)bcchapel.org (richard(at)bcchapel.org)> wrote:

  	  Quote: 	
		  --> Kolb-List message posted by: "Richard Pike" <richard(at)bcchapel.org (richard(at)bcchapel.org)>

  

 Finishing up the wiring, hooking up the transponder, and I have to confess that whoever took the transponder out of the wreck (probably me) failed to note down enough information about how to hook it back up.

 Coming off the tray is a wire that is obviously the ground, no problem. Another 16 gauge wire is obviously the power supply, once again no problem. But there is one wire left over, it is about 20 gauge, and I have no idea if it goes to hot or ground. Probably hot, but...

  The transponder is an RT359A 300, probably out of a Cessna.

 

 Will go around to the local avionics shops tomorrow and ask dumb questions unless someone on here already has an answer.

 

 Richard Pike

 MKIII N420P (420ldPoops)

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=313323#313323

 

 

 

 

 

 

 

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Posted: Wed Sep 22, 2010 6:12 am Post subject: 3 transponder wires

Coming off the tray is a wire that is obviously the ground, no problem.  Another 16 gauge wire is obviously the power supply, once again no problem. But  there is one wire left over, it is about 20 gauge, and I have no idea if it goes  to hot or ground.Richard Pike

MKIII N420P (420ldPoops

  

 >>>>>>>>>>>>>>>

  

 three wires..

  

 power

 ground

 back light???????

  

 boyd young

   [quote][b]

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Richard Pike

Joined: 09 Jan 2006
Posts: 1671
Location: Blountville, Tennessee

Posted: Wed Sep 22, 2010 7:20 am Post subject: Re: 3 transponder wires

Back light is possible. I just don't want to apply power to it and have any of the smoke leak out. I don't think Lucas was involved in this unit, and I don't want him getting involved.



And this airplane doesn't have a sensitive altimeter, it just uses the one in the Grand Rapids E I S.

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Eugene Zimmerman

Joined: 10 Jan 2006
Posts: 392

Posted: Wed Sep 22, 2010 9:22 am Post subject: 3 transponder wires

Richard,



Could it be an antenna wire?



Gene

On Sep 21, 2010, at 11:38 PM, Richard Pike wrote:



 	  Quote: 	
		   



 Finishing up the wiring, hooking up the transponder, and I have to  

 confess that whoever took the transponder out of the wreck (probably  

 me) failed to note down enough information about how to hook it back  

 up.

 Coming off the tray is a wire that is obviously the ground, no  

 problem. Another 16 gauge wire is obviously the power supply, once  

 again no problem. But there is one wire left over, it is about 20  

 gauge, and I have no idea if it goes to hot or ground. Probably hot,  

 but...

 The transponder is an RT359A 300, probably out of a Cessna.



 Will go around to the local avionics shops tomorrow and ask dumb  

 questions unless someone on here already has an answer.



 Richard Pike

 MKIII N420P (420ldPoops)





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=313323#313323

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