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ARC transponder connector?

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a.s.elliott(at)cox.net
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Posted: Mon Jan 01, 2007 7:51 pm Post subject: ARC transponder connector?

I recently purchased a Cessna/ARC RT-459A transponder off eBay.   It came with tray and connector, but the wires were cut off flush with the  connector back, making it impossible to splice in.  Anyone know what type  connector the 359-459-859 series transponders use?  And perhaps where the  sockets might be available?  Anyone perhaps done some kind of  conversion to a DB-25 connector and wnat to tell how?  Or should I just go  to an avionics shop and ask them to make me up a half harness?

  

 Thanks,

 Andy Elliott, Mesa, AZ

N601GE (reserved)

601XL/TD/QB, Corvair,  building...

   [quote][b]

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jetboy

Joined: 22 Jul 2006
Posts: 233

Posted: Mon Jan 01, 2007 11:44 pm Post subject: Re: ARC transponder connector?

Andy,

     I have a 359A  and wired a cable direct from the circuit bd. to a DB25 connector for an SSD120 encoder.



This has been verified by a TCAS aircraft as working correctly but not been installed / ramp tested yet.



SSD120      RT359A



6                 11   strobe

15, 1            gnd

8, 14            9      +ve



2                  14   a1

3                  13   a2

4                  15   a4

5                  19   b1

9                  17   b2

10                16   b4

11                21   c1

13                18   c2

12                20   c4



If your encoder is an AK-350, do not connect pin 1 or pin 14, the others are as for SSD120 encoder connections.



I got the pinouts from the net and cessna manuals



Hope you can find a connector, they are rare. my FBO told me its OK to fit my own connector, but I think the avionics signoff will have the final say if it ever gets that far.



Ralph

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Ralph - CH701 / 2200a

jetboy

Joined: 22 Jul 2006
Posts: 233

Posted: Mon Jan 01, 2007 11:56 pm Post subject: Re: ARC transponder connector?

to make it clear pins 15,1  on the ssd120 go to gnd

pins 8,14  go to pin 9 on RT359A



Also I missed the +12v aircraft pwr goes to RT359  22



for 12V theres a jumper connecting pins 23, 8



By the look of the page I printed, it came off the aeroelectric connection data



Ralph

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Ralph - CH701 / 2200a

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