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Author	Message
slgordon3	Post subject: wire on outside of small jets? Posted: Thu Jun 30, 2011 2:15 pm
Joined: Sun Mar 06, 2011 11:00 pm Posts: 30	Could someone please explain to me what the wires are for that you often see on private jets that run from the top of the fuselage to the tail? What is being transmitted by the wire? I think I've also seen them on King Airs. I tried google but couldn't find the answer. For example, such a wire is visible in this picture: http://flightaware.com/photos/view/2297-53831c837dbb404f7d09b0b1116a9e88c3f62e9e/aircraft/N883RP/sort/votes/page/1 Any info would be appreciated. Thanks!
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mduell	Post subject: Re: wire on outside of small jets? Posted: Thu Jun 30, 2011 3:07 pm
Joined: Wed Jul 27, 2005 3:00 pm Posts: 4715 Location: FAWHQ	ADF antenna
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slgordon3	Post subject: Re: wire on outside of small jets? Posted: Thu Jun 30, 2011 3:20 pm
Joined: Sun Mar 06, 2011 11:00 pm Posts: 30	mduell: ADF antenna Ahh, thanks so much!
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flyboy97222	Post subject: Re: wire on outside of small jets? Posted: Thu Jun 30, 2011 6:40 pm
FlightAware Member Joined: Tue Jun 19, 2007 8:00 pm Posts: 2656 Location: Sunny South Florida	Mark is wrong- HF antenna. At least in the picture the OP posted The ADF on modern jets use a closed loop system.
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slgordon3	Post subject: Re: wire on outside of small jets? Posted: Thu Jun 30, 2011 6:52 pm
Joined: Sun Mar 06, 2011 11:00 pm Posts: 30	flyboy97222 wrote: Mark is wrong- HF antenna. At least in the picture the OP posted The ADF on modern jets use a closed loop system. Interesting--the plot thickens! Thanks for replying. Can I ask a follow-up question? Why don't you usually see these wires on large passenger jets? Do they just have more room to run them under the "skin" of the aircraft?
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FlyNYC	Post subject: Re: wire on outside of small jets? Posted: Thu Jun 30, 2011 10:31 pm
FlightAware Member Joined: Tue Feb 14, 2006 3:00 pm Posts: 1672 Location: Pointy end, but keeping a weary eye on the back	slgordon3 wrote: Can I ask a follow-up question? Why don't you usually see these wires on large passenger jets? Do they just have more room to run them under the "skin" of the aircraft? On large transport category aircraft, they are usually run inside the vertical fin.
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slgordon3	Post subject: Re: wire on outside of small jets? Posted: Fri Jul 01, 2011 1:55 am
Joined: Sun Mar 06, 2011 11:00 pm Posts: 30	FlyNYC wrote: On large transport category aircraft, they are usually run inside the vertical fin. OK, got it. Thanks for explaining, I'm not a pilot but I really enjoy learning about aircraft and avionics.
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tedhall42	Post subject: Re: wire on outside of small jets? Posted: Thu Aug 11, 2011 7:07 pm
Joined: Mon Aug 24, 2009 12:00 pm Posts: 3	hf
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porterjet	Post subject: Re: wire on outside of small jets? Posted: Fri Sep 09, 2011 3:49 am
FlightAware Member Joined: Tue Jan 17, 2006 12:00 pm Posts: 2387 Location: KSBP/OEJN	We still have a wire ADF antennae, but then we are not flying a modern airplane. Our HF is in the tail.
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phantomman69	Post subject: Re: wire on outside of small jets? Posted: Wed May 30, 2012 7:53 am
Joined: Wed May 30, 2012 7:47 am Posts: 1	slgordon3 wrote: FlyNYC wrote: On large transport category aircraft, they are usually run inside the vertical fin. OK, got it. Thanks for explaining, I'm not a pilot but I really enjoy learning about aircraft and avionics. Actually, the fin, often the leading edge is the antenna. All of the large Bombardier and Gulfstreams are like this.
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slgordon3	Post subject: Re: wire on outside of small jets? Posted: Wed May 30, 2012 12:44 pm
Joined: Sun Mar 06, 2011 11:00 pm Posts: 30	phantomman69 said: Actually, the fin, often the leading edge is the antenna. All of the large Bombardier and Gulfstreams are like this. OK i gotcha. That is really interesting that they use the fin itself as an antenna, i had no idea but it makes sense. Thanks!
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ewhyte	Post subject: Re: wire on outside of small jets? Posted: Fri Jun 01, 2012 1:02 pm
Joined: Tue Jan 16, 2007 2:00 pm Posts: 3	Our Citation that is the HF Antenna. Someone told me that a way to tell the difference between an HF as opposed to an ADF antenna on the top like that is the HF is usually a thicker "Cable" and the ADF is a thinner "wire" I'm a pilot not an avoincs tech, so for me the easiest way to tell is to look in the panel...
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FlyNYC	Post subject: Re: wire on outside of small jets? Posted: Sat Jun 02, 2012 8:52 am
FlightAware Member Joined: Tue Feb 14, 2006 3:00 pm Posts: 1672 Location: Pointy end, but keeping a weary eye on the back	I really love the fact that people are answering a year old question that has already been answered multiple times. Proof that once it's on the internet, it never dies.
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