[ARC5] AN-104 aircraft antenna copper sheathing

[Tim]

 Hi - I did that a long time ago and I forget what the capacitance worked
out to be (not much, I think I guessed the glass was 1/8 inch..)  But it
was a random wire antenna driving a shortwave RX and it worked adequately
without further "maths"...  I guess you could also use it for transmitting
where that series C should be taken into account as part of the complex
system Z.  Mr Smith enters the chat....

I think I remember that there were some older cell phone antennas for
window mounting that used the same idea to couple the signal thru the rear
window glass... cool but not rocket science...  Improvise, Adapt,
Overcome...
Tim
N6CC

On Thu, Jan 11, 2024 at 6:20 PM Hubert Miller <Kargo_cult at msn.com> wrote:

> Tim, that reminds me. Besides the copper tape i still have, i also have a
> glass plate that i intended for a crystal
> regrinding project. I'm thinking i can measure the capacitance between
> copper tape on each side. I should do
> this. I am intrigued that this actually allowed SWL reception, altho of
> course the small capacity rules that the
> antenna impedance must be high. As for car windows, the most likely
> candidate, the rear window, usually has
> in-glass wiring for defrost. ( There was one car radio, the Carver TX-9,
> that used this rear window defrost wiring
> for one antenna for space - diversity FM reception. Unfortunately, Eton, a
> usually reliable maker, really fouled
> up the cassette drive mechanics, and Carver recalled all they had sold. )
> ( These Carver car radios showed up
> years later at a Bellevue, WA electronics store, Vetco. )
> -Hue Miller
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