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Re: 1/4"3m ribbon helix reply to replies



Hi Guys,

I have also been curious about the fact that the tape is only 1mil thick and
it seems to work. I built a 1/4 inch tape helix on the thin plastic and it
seems to be exactly as good as the 10 inch copper one. I use a 1.1 inch
strip wound around a 1.65 inch or so thin plastic tube.I have been playing
with a conical form and it seems to also work good. I'll post some pictures
in the future.

Pieter

----- Original Message -----
From: "Gunther Meisse" <gjmouse@neo.rr.com>
To: <amsat-bb@AMSAT.Org>
Sent: Thursday, August 01, 2002 9:43 PM
Subject: [amsat-bb] 1/4"3m ribbon helix reply to replies


> Gentlemen:
> Well, for every action there is an equal and opposite reaction!!!!
> I mustered some descent on that -bb posting..
> I have loved the 3m copper ribbon helix concept, but have had bad luck
with
> them.
> On the PVC, I gave the PVC the microwave Oven test and it passed well, but
> the result stunk.
> On the portable, I take note of the fact that my dual helix went from bad
to
> great with addition of the #10 wire suppered on the 1/4" tape.
> The comment that the surface area is what counts interests me. In the case
> of the 1/4" 3m tape, that is 1 mil thick, the "area" that faces the wave
> front is only 1mil thick. Am I to understand that the "diameter of the
> radiating conductor" is only important in terms of the total surface area,
> or the surface area facing the wave front direction?
> I noted with interest the wonderful pictures of foil helixes that I assume
> work well.
> When I get some time, I must start over and see if I can come up with some
> better results. For the time being, for me, it is #10 or larger wire.
> 73
> Gunther Meisse
> W8GSM
>
> ----
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>
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