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08-08-2007, 08:11 PM
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Join Date: Aug 2005
Location: Grand Rapids, MI
Posts: 107
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Marker Beacon Antenna
Anyone have experience with using 40" of stripped RG400 coax as their marker beacon antenna? Dan C. used it and was on his website...looks too simple to work well. Feedback?
Jack
N811AK
RV7A
Last 843 items. 
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08-08-2007, 08:20 PM
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Join Date: May 2007
Location: Jefferson City, Missouri
Posts: 71
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I have that on my RV 10, seems to be working fine. Put it in the wing just as they describe.
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08-08-2007, 08:44 PM
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Join Date: Oct 2005
Posts: 11
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I installed my antenna as described 9 years ago and 1550 hours of no problem operation.
Dick Martin
RV8 N233M
the fast one
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08-08-2007, 11:24 PM
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Join Date: Mar 2005
Location: ...
Posts: 2,049
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Quote:
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Originally Posted by dekky111
...looks too simple to work well.
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Too simple NOT to work well.  Hasn't failed me yet.
__________________
Dan Checkoway RV-7
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08-09-2007, 03:17 AM
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Join Date: Jan 2005
Location: Yorkshire, England
Posts: 2,052
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Didn't realise people still used marker beacons
All our approaches use DME or an NDB as the final fix.
Marker frequencies are being used as runway incursion protection beacons on a trial basis. As you approach a hold, it warns you, if you pass it without permission, it really warns you ! Hopefully they don't integrate it with the ACARS to print the violation 
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08-14-2007, 07:12 AM
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Join Date: Aug 2005
Location: Grand Rapids, MI
Posts: 107
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Going in
Thanks for the feedback! It will be going in today.
Jack
N811AK
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08-14-2007, 08:34 AM
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Join Date: Jul 2006
Location: Corvallis Oregon
Posts: 3,547
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Put mine in the cowl
Shorter cable run, don't have to get it through the spar and it works just as well.
Just make sure you put the joint on the oil door side because when you forget to reconnect it its very annoying to have to take your upper cowl off again...DOH!
Frank 7a
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09-07-2007, 11:15 PM
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Join Date: Jan 2005
Location: MN
Posts: 2,269
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Frank - How do you have the cable run?
Is it out the top of the firewall so you can get at it from the Oil door?
Great idea for this.
__________________
Cheers,
Pete
Amateur Plane - RV-9A N789PH - 2350+ Hrs
Amateur Radio - KD0CVN
Doggies Delivered - 25+
St. Paul, MN
Last edited by petehowell : 09-07-2007 at 11:17 PM.
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09-08-2007, 03:48 PM
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Join Date: Jan 2005
Location: Denver, based BJC
Posts: 89
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Yup..works perfectly
Ran the cable out to my wingtip, stripped the external shielding (leaving the center conductor insulation intact) for the last 40", then ran it fore/aft and laid a few pieces of fabric and epoxy over it (like bandaids). Well, actually I added a bulkhead BNC connector in the last outboard rib so I could remove the wingtips if necessary.
Len
__________________
N72ML (RV7A)
IO360-M1B 180 hp, Whirlwind 74RV, SL30, GX60, PMA7000B, GI106, GTX345, ACK950, Dual Cheltons, Dynon D10A backup, AFS 2500, XM wx, Digiflight II sgvg. Location KBJC. Flying as of April 2, 2007. 1391.0 wonderful hrs as of Nov 2018.
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10-04-2009, 11:20 AM
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Join Date: Dec 2005
Location: Middle Georgia
Posts: 654
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Quote:
Originally Posted by frankh
Shorter cable run, don't have to get it through the spar and it works just as well.
Just make sure you put the joint on the oil door side because when you forget to reconnect it its very annoying to have to take your upper cowl off again...DOH!
Frank 7a
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Frank,
Do you have an pics of this. I like this idea. I assume you had to bend the 40" length center conductor some. I know this de-tunes the antenna somewhat. But, for the marker beacon, I doubt if it matters much. I also plan to put my glideslope antenna in the cowling. I think this one needs to be 17". Someone please correct me if I am wrong.
Thanks,
__________________
Tony
RV8A
N97AP
Warner Robins, GA
Phase I complete
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