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Altitude Encoder Readout

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sandlar1(at)embarqmail.co
Guest

Posted: Wed Jul 08, 2009 7:56 am Post subject: Altitude Encoder Readout

Don't know if this is the proper forum for this, but here goes:

Some years ago, maybe 15 or so, there was an article in Sport Aviation regarding a kit for a panel-mounted device which would give a constant display of what the encoder was sending.  Since then, I haven't heard of any such instrument, except what's incorporated in the newer transponders.  Does anyone on this forum know of any such self-contained instrument that could be used with the older transponders/encoders?



Thanks



Larry Sharratt



 [quote][b]

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klehman(at)albedo.net
Guest

Posted: Wed Jul 08, 2009 9:05 am Post subject: Altitude Encoder Readout

Any chance you need an excuse to acquire an MRX traffic detector 

The MRX will display transponder code and the altitude you are 

transmitting but it's around $500. A MRX plus a new bottom end 

transponder made more sense to me than spending the same or more for a 

more expensive transponder though. There are enough units around that 

you could likely borrow one if the need is short term.

Ken



LARRY SHARRATT wrote:

 	  Quote: 	
		   Don't know if this is the proper forum for this, but here goes:

 Some years ago, maybe 15 or so, there was an article in Sport Aviation 

 regarding a kit for a panel-mounted device which would give a constant 

 display of what the encoder was sending.  Since then, I haven't heard of 

 any such instrument, except what's incorporated in the newer 

 transponders.  Does anyone on this forum know of any such self-contained 

 instrument that could be used with the older transponders/encoders?

 

 Thanks

 

 Larry Sharratt

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mprather(at)spro.net
Guest

Posted: Wed Jul 08, 2009 9:09 am Post subject: Altitude Encoder Readout

I believe the article in question starts on page 66 of the Feb 1992 issue

of Sport Aviation..  I don't know if the plans/kits are still available. 

If you are an EAA member, the article can be downloaded from the Sport

Aviation website.



Regards,



Matt-



 	  Quote: 	
		   Don't know if this is the proper forum for this, but here goes:

 Some years ago, maybe 15 or so, there was an article in Sport Aviation

 regarding a kit for a panel-mounted device which would give a constant

 display of what the encoder was sending. Since then, I haven't heard of

 any such instrument, except what's incorporated in the newer transponders.

 Does anyone on this forum know of any such self-contained instrument that

 could be used with the older transponders/encoders?



 Thanks



 Larry Sharratt

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user9253

Joined: 28 Mar 2008
Posts: 1922
Location: Riley TWP Michigan

Posted: Thu Jul 09, 2009 5:58 am Post subject: Altitude Encoder Readout

Larry Sharratt,

  

 I purchased the kit and built it and it works great.  I doubt that the  kit is available now but it would not hurt to ask.  The name of the company  was Airpar.  Contact:

 Fred N Wimberly (703) 979-2483

PO Box 2755

 617 21st St S

Arlington, VA 22202-2732

  

 I still have the construction manual and parts list.  However, this  will not do you much good without the PROM, the "brains" of the kit.  The  PROM must be programmed with the gray code, not an easy task (beyond my  capability).  If you really want to build an Altitude Encoder Read-Out and  Fred Wimberly can not help, then perhaps a knowledgeable person on the  AeroElectric website can help.

 Joe Gores



   [quote][b]

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_________________
Joe Gores

nuckolls.bob(at)aeroelect
Guest

Posted: Thu Jul 09, 2009 6:55 am Post subject: Altitude Encoder Readout

At 08:55 AM 7/9/2009, you wrote:

 	  Quote: 	
		  Larry Sharratt,



I purchased the kit and built it and it works great.  I doubt that 

the kit is available now but it would not hurt to ask.  The name of 

the company was Airpar.  Contact:

Fred N Wimberly (703) 979-2483

PO Box 2755

617 21st St S

Arlington, VA 22202-2732



I still have the construction manual and parts list.  However, this 

will not do you much good without the PROM, the "brains" of the 

kit.  The PROM must be programmed with the gray code, not an easy 

task (beyond my capability).  If you really want to build an 

Altitude Encoder Read-Out and Fred Wimberly can not help, then 

perhaps a knowledgeable person on the AeroElectric website can help.


	


   I recall seeing various display projects over the years

   but was unable to "put my hands" on one quickly. There

   IS an interesting product designed by a friend of mine

   that reads the output of your transponder's reply burst.



   See:



http://www.airsport-corp.com/

        Bob . . .



         ---------------------------------------

        ( . . .  a long habit of not thinking   )

        ( a thing wrong, gives it a superficial )

        ( appearance of being right . . .       )

        (                                       )

        (                  -Thomas Paine 1776-  )

         ---------------------------------------

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lrshar

Joined: 14 Jul 2009
Posts: 2

Posted: Tue Jul 14, 2009 9:12 am Post subject: Altitude Encoder Readout

Thanks - I appreciate the replies to my question.  

Just after posting the question, I inadvertently unsubscribed from the list so just read  a couple of the replies today, thus the delay in acknowledging your responses.

Thanks again.



Larry Sharratt

---

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