Tuesday, May 27, 2008

Transponder wiring diagram

Hi guys, just got my KT 76 and encoder, its all wired together but I wanted a wiring diagram for reference, is anyone else flying with one? Or do you know where I can find a diagram online, I have searched but no luck.

Thanks in adavance

Bob

"One of the beautiful things about a single piloted aircraft is the quality of the social experience."
- Anonymous

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10 comments:

  1. AnonymousMay 27, 2008 at 1:41 PM

    KT-76A/C
    1 ground -
    2 14volt + dimmer
    3 ground -
    4 not used
    5 not used
    6 not used
    7 not used
    8 ALTITUDE D4 KT-76C model only
    9 DME suppression
    10 ext standby
    11 14volt + input
    12 not used
    A ground -
    B ALTITUDE B4
    C ALTITUDE B2
    D ALTITUDE C1
    E ALTITUDE B1
    F ext ident
    G not used
    H ALTITUDE C4
    I not used
    J ALTITUDE A4
    K ALTITUDE A2
    L ALTITUDE C2
    M ALTITUDE A1
    N not used

    ReplyDelete
  2. Pober PilotMay 27, 2008 at 3:00 PM

    thanks, but how do I find pin # 1??

    Bob

    ReplyDelete
  3. Big ChimpMay 27, 2008 at 3:42 PM

    Bob,

    The last post was me. Try this link...

    http://www.aeroelectric.com/Installation_Data/KT76A-76C-78A.pdf

    Ian

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  4. Big ChimpMay 27, 2008 at 3:45 PM

    Also, there is a KT76C in my old Coyote. James has the book for it and it is the same tray and wiring. You could probably get a hard copy from that.

    Ian

    ReplyDelete
  5. AnonymousMay 27, 2008 at 8:38 PM

    Thanks Ian, I was down at airflow looking at the antenna installs on some of the planes. Now I guess thats all I need to be complete, do you know of anyone locally I can get one from??

    Bob

    ReplyDelete
  6. Big ChimpMay 27, 2008 at 8:55 PM

    You're one day late, we just ordered a bunch of stuff from Aircraft Spruce that was shipped this morning. That's the best place to order from. Call the Toronto store, the TED antenna is 20 bucks.

    Ian

    ReplyDelete
  7. AnonymousMay 27, 2008 at 9:46 PM

    figures I am always a day late and a dollar short....hahaha

    thanks,

    Bob

    ReplyDelete
  8. Pober PilotMay 28, 2008 at 6:37 AM

    Ok, does the antenna use just standard coaxial wire? using bnc connectors??

    feeling like a newbie

    Bob

    ReplyDelete
  9. Big ChimpMay 28, 2008 at 6:48 AM

    Bob,

    On some things it isn't so critical but on a transponder it's important to use the correct cable. The losses in the cable at transponder frequencies can be extreme so RG400 cable is recommended. Many people use cheap store bought coax but it's a mistake. I am getting several made up by an avionics guy locally so if you want, one measure the length fairly accurately and I will have one made up for you. Cost is typically around $50 depending on length. No point spending $2000? on a transponder only to give up 1/2 the output performance to save $20 on cable.

    Ian

    ReplyDelete
  10. Pober PilotMay 28, 2008 at 7:25 AM

    Thanks Ian, yes I need one made, could you email me your phone number to babinder@yahoo.ca and we can make arrangements. Thanks for all your help.

    Bob

    ReplyDelete