[Cliffdwellers] re : stealth antennas

Mon, 21 Jan 2002 14:42:47 -0800

I have heard of similar ideas working very well.
Any large metal object at the end will work well for a "top cap".  Even 
radial like extensions.  Also, by moving the coils out/in or 
stretching/collapsing will change the tuning.   I have read discussions on 
whether stretching at the ends of the side so as to leave more coiled in 
the middle (make like a centre loaded dipole), vs stretching towoards the 
end like the helical wound ants (widerspacing out to narrower spacing, or 
just making it stretch whatever is the best.

I have been toying with the idea of using one for a vertical and doing some 
tuning by moving the ends apart/closer.

Chris opr VE7HCB

At 06:42 PM 2002-01-20 -0700, John R. Irvin wrote:
>Allan,
>
>   I am using an antenna made out of dryer exhaust hose.  I got the
>design out of either 73 or QST a few years back.  It is made out of
>about 156 turns of the hose (plastic hose, metal turns) on each side.
>But heck, just get a box of the hose and put it in the attic.  I don't
>think there is much "design" to the thing.   I use a 4:1 current
>forcing balun and run coax to the tuner and rig.  It is spread out to
>the length of my attic, about 33' total.  I also use a garbage can lid
>at each end for a cap. hat.  Don't ask how efficient it is, but it
>works.  Not stealth either, except it is in the attic.
>
>John Irvin
>WB7DYU
>
>----- Original Message -----
>From: "allan egleston" <[email protected]>
>To: <[email protected]>
>Sent: Sunday, January 20, 2002 4:44 PM
>Subject: [Cliffdwellers] re : stealth antennas
>
>
> > Has any one played with slinky antennas for stealth operations? WHat
> > other small space antennas have the group used in the past and what
>are
> > you using now? 73's De Allan.
> > _______________________________________________
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> >
>
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