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rdmac(at)swbell.net Guest
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Posted: Sat Feb 10, 2007 5:57 am Post subject: Transponder Question |
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Help me out here guys and gals. I’m getting ready to purchase a transponder for my plane and was wondering; will a transponder rated for 14 volts work in a 12 volt system?? I know how a transponder works but I’ve never installed one………..help. Also can someone recommend a good make or model that doesn’t cost an arm or a leg? Thanks
Roger Mac
N619RM
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Guy Buchanan

Joined: 16 Jul 2006 Posts: 1204 Location: Ramona, CA
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Posted: Sat Feb 10, 2007 6:29 am Post subject: Transponder Question |
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At 05:54 AM 2/10/2007, you wrote:
Quote: | Help me out here guys and gals. I’m getting ready to purchase a transponder for my plane and was wondering; will a transponder rated for 14 volts work in a 12 volt system?? |
Yes.
Quote: | I know how a transponder works but I’ve never installed one………..help. Also can someone recommend a good make or model that doesn’t cost an arm or a leg? |
I bought a Becker because it was small and light. And it only cost an arm and my leg up to the knee! You get to decide which leg, though. There were some much cheaper on the used market, though for the utility it always seems like they cost too much. Keep a close watch on Ebay and Google; though with electronics you sometimes get what you pay for. (Horror story of purchasing radios that were salvaged from a submerged aircraft. They worked, but for how long. . .)
Guy Buchanan
K-IV 1200 / 582-C / Warp / 100% done, thanks mostly to Bob Ducar.
Do not archive
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_________________ Guy Buchanan
Deceased K-IV 1200
A glider pilot too. |
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Michel

Joined: 10 Jan 2006 Posts: 966 Location: Norway
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Posted: Sat Feb 10, 2007 6:30 am Post subject: Transponder Question |
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Quote: | From: Roger McConnell [rdmac(at)swbell.net]
Help me out here guys and gals. I'm getting ready to purchase a transponder
for my plane and was wondering; will a transponder rated for 14 volts work
in a 12 volt system??
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Yes, Roger, it will. When you fly, your regulator sends about 14 V to your battery ... otherwise, it wouldn't charge at all.
I am not updated with the best transponder on the market but I can tell you what I did when I installed my old yellow-tagged Cessna transponder: I installed the antenna under the fuselage and with a ground plane consisting of a thin aluminium disk of about one foot diameter, on the top of it. I never got a complain from ATC, it works just fine and dandy. Probably better than my radio, when I think of it.
Cheers,
Michel
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aldaniels(at)fmtcblue.com Guest
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Posted: Sat Feb 10, 2007 9:02 am Post subject: Transponder Question |
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I like the King KT-76A transponder. You will also need an encoder and it
is well worth the money to have it pre-wired so all you have to do is
hook up the power and ground.
Roger McConnell wrote:
Quote: |
Help me out here guys and gals. I’m getting ready to purchase a
transponder for my plane and was wondering; will a transponder rated
for 14 volts work in a 12 volt system?? I know how a transponder works
but I’ve never installed one………..help. Also can someone recommend a
good make or model that doesn’t cost an arm or a leg? Thanks
Roger Mac
N619RM
*
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