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Deems Davis
Joined: 09 Jan 2006
Posts: 925
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 Posted: Fri Feb 01, 2008 12:36 pm Post subject: RYO Marker Beacon Antenna |
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I have been told that you can make an acceptable marker beacon antenna
from a stripped piece of approx 40" coax, mounted horizontally within a
fiberglass wingtip. So my questions are -
1. Is 40" the correct length?
2. Is it acceptable to strip only the outer coax covering and the shield
material leaving the insulator in place which surrounds the center
conductor?
Deems Davis
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mkimball(at)gci.net
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| Posted: Fri Feb 01, 2008 1:53 pm Post subject: RYO Marker Beacon Antenna |
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Bob Archer makes one out of copper tape and it is 40 inches long.
Apparently that is the proper length for 1/4 wavelength. Here is a link to
a document with information about his antennas for composite airplanes and
contact info for him. He might even be willing to talk to you about making
your own even though he'll be talking himself out of a sale.
Mike
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mkimball(at)gci.net
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nuckolls.bob(at)cox.net
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| Posted: Sat Feb 02, 2008 4:47 am Post subject: RYO Marker Beacon Antenna |
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At 12:50 PM 2/1/2008 -0900, you wrote:
[quote]
Bob Archer makes one out of copper tape and it is 40 inches long.
Apparently that is the proper length for 1/4 wavelength. Here is a link to
a document with information about his antennas for composite airplanes and
contact info for him. He might even be willing to talk to you about making
your own even though he'll be talking himself out of a sale.
Mike
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rv8builder(at)earthlink.n
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| Posted: Sat Feb 02, 2008 4:48 am Post subject: RYO Marker Beacon Antenna |
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Why go through the effort to make/mount a marker beacon antenna when marker beacons are being decommissioned rather rapidly?
Dale
do not archive
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