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Transponder adjustment

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gavanne(at)iconz.co.nz
Guest

Posted: Sun May 24, 2009 2:47 pm Post subject: Transponder adjustment

Hi all…  

Has anyone had any experience of adjusting the received output from the transponder?  

I’m running a Garmin 320A transponder through an Ameri-King 350 encoder. It works fine except that the receiving station is getting a readout 300 ft low. (eg when I am at 5500ft, radar says I am at 5200ft)  

There are a couple of adjustment screws on the encoder + & - .   Has anybody adjusted these and how sensitive are they?  

   

Thanks,   Gavin Lee    ZK-EPA…….55 hours and counting  

       [quote][b]

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bill.sue(at)orcon.net.nz
Guest

Posted: Mon May 25, 2009 1:38 am Post subject: Transponder adjustment

 	  Quote: 	
		  

Hi Gavin, I am is South Africa at present. The avionics guys at Hamilton
	


Aero Avionics did mine for me, only took him a few minutes.



Look after NZ while I am away.



Cheers



Bill Sisley



Hi all.

 	  Quote: 	
		  

 Has anyone had any experience of adjusting the received output from the

 transponder?



 I'm running a Garmin 320A transponder through an Ameri-King 350 encoder.

 It

 works fine except that the receiving station is getting a readout 300 ft

 low. (eg when I am at 5500ft, radar says I am at 5200ft)



 There are a couple of adjustment screws on the encoder + & - .   Has

 anybody

 adjusted these and how sensitive are they?



 Thanks,   Gavin Lee    ZK-EPA...55 hours and counting

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raimo.toivio(at)rwm.fi
Guest

Posted: Mon May 25, 2009 2:43 am Post subject: Transponder adjustment

Hi Gavin and all

  

 I have a combination Ameri-King 350 encoder and  Bendix-King KT76A/78A transponder and have same sympthom as you eg a readout  200-300 feet too low.

  

 Also - like Bob - I hear a low blimb or so through my  headset when in C-mode and it is sending eg about once every two or three  seconds.

  

 What to do?

  

 Cheers, Raimo

 OH-XRT 103 hrs and testing Airmaster &  Trio

 [quote]   ---

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