Regarding applying copper tape antenna to a carbon fiber shaft or backing.
This string made me curious and I spent about an hour trying to educate myself.
http://www.antenna-theory.com/
I learned that I am not that curious, but if anone else is, this appears to be
a very good resource.
Respectful
ubject: RE: KR> Antenna Questions/Carbon Fibre/Graphite
>
> I know there are a lot of roll your own people on the KRNet and all the
> best to all you:-), however I used a simple store bought whip antenna and
> it worked great. For my VOR I used a wingtip mounted Bob Arche
I know there are a lot of roll your own people on the KRNet and all the best to
all you:-), however I used a simple store bought whip antenna and it worked
great. For my VOR I used a wingtip mounted Bob Archer antenna, see:
http://www.aircraftspruce.com/catalog/avpages/archer_antennas.php It
I'm certainly no antenna expert but I would have a concern about
building an antenna in to any part of the aircraft structure. You
are betting that you will never have an antenna or connection problem
for the life of the aircraft. Fortunately, I was made a gift of the
antenna I'm using
(h
After this thrread, I'm tempted to just use smoke signals...LOL
--
Glenn Martin
Sent: Wednesday, 10 February 2010 3:32 PM
To: KRnet
Subject: Re: KR> Antenna Questions/Carbon Fibre/Graphite
Mark Langford wrote:
> just use something else to
> stick your copper tape to and get in the air that much quicker...
>
< I second that motion
Mark Langford wrote:
> just use something else to
> stick your copper tape to and get in the air that much quicker...
>
< I second that motion
--
Glenn Martin
you conducting (no pun intended LOL) the test you
mentioned when time permits.
Larry Howell
From: Mark Langford
To: KRnet
Sent: Tue, February 9, 2010 8:57:21 PM
Subject: Re: KR> Antenna Questions/Carbon Fibre/Graphite
I said it was pointless to debate t
I said it was pointless to debate this, but I'm going to debate AGAINST
myself. An analogy that makes carbon fiber less than attractive as
something to wrap an antenna around is this: If you had a 3' aluminum tube
from an old FM antenna and put a layer of shrink tubing around it to
insulate,
Glenn Martin wrote:
>I believe the carbon fiber would do more harm than good,as it ADDS
>extraneous loss. <
Given the experiment we conducted at work where the conductivity didn't
affect EMF, I can't see why Larry's idea of wrapping the copper foil around
the arrow shaft lengthwise (down the l
Carbon fiber is resistive, thus it would absorb energy and dissipate it
in the form of heat. It would likely be a negligible loss, but thats
what it would do. In the ARRL Antenna handbook (considered a BIBLE on
the subject of antennas) there is NO discussion of making an antenna in
this manner
et-boun...@mylist.net] On Behalf
Of Mark Langford
Sent: Tuesday, February 09, 2010 5:07 PM
To: KRnet
Subject: Re: KR> Antenna Questions/Carbon Fibre/Graphite
Larry Howell wrote:
> If one were to take a graphite arrow rod for example, place copper tape
> lengthwise on the arrow shaft, wrap the
Larry Howell wrote:
> If one were to take a graphite arrow rod for example, place copper tape
> lengthwise on the arrow shaft, wrap the tape completely around it, attach
> appropriate toroids, soldering and wiring to radio of course. Would the
> graphite tube in the center, (which we all know i
complexity.
Besides, how much gain does one need? With a simple quarter-wave whip and a
hand-held radio, I already have a range of 150 miles or more.
Just my 2¢ worth,
Lee
KN4VN
- Original Message -
From: "Larry H."
To: "KRNET"
Sent: Tuesday, February 09, 2010 4:46 PM
After the previous questions concerning carbon and fiberglass arrow rods for
making com antennas and the mention of carbon fibre/graphite rods I began to
think more about it. My first inclination was, of course I wouldn't use carbon
but now I would like to have this one question answered.
My t
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