[AMRadio] Loop antenna feed question


crawfish crawfish at surfmore.net
Sun Dec 4 20:12:07 EST 2005


LB Cebik, W4RNL, on his web site, talking about Cloud Warmers, indicates 35
feet as the accepted height for a 75m loop. I am planning a loop for 160m at
just a little over that height.
                                 Joe W4AAB
----- Original Message -----
From: <W7QHO at aol.com>
To: <jpl15 at panix.com>; <amradio at mailman.qth.net>
Cc: <johnson at mailman.qth.net>
Sent: Sunday, December 04, 2005 4:53 PM
Subject: Re: [AMRadio] Loop antenna feed question


> John,
>
> Hmmm.... 450" loop at 5'.   Feedpoint impedance would vary all over the
place
> depending on frequency.   Do you transmitting on this setup, and if so,
are
> you using some kind of an antenna tuner, balanced output or single ended,
how
> long is the feedline, and what frequencies do you intend to use?   In any
case,
> can't see that fanning out at the feedpoint would be necessary or useful.
>
> Dennis D. W7QHO
> Glendale, CA
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