Isn't an inverted L antenna just one (Unique) configuration of a top hat
vertical?
k7puc
----- Original Message -----
From: "hasan schiers" <schiers@netins.net>
To: "Robert Chudek - K0RC" <k0rc@pclink.com>; <towertalk@contesting.com>
Sent: Friday, July 14, 2006 7:03 AM
Subject: Re: [TowerTalk] Question on Multiple Inverted L Antennas
> Inverted L's have similar bandwidth to a 1/4 wave vertical...and it isn't
> "real broad" without excessive return loss. All measurements need to be
> made
> at the feedpoint. I've done radial studies on my Inverted L and as radial
> numbers increase, vswr bandwidth DECREASES, exactly as it should. I made
> measurements of feedpoint Z at resonance and 2:1 vswr bandwidth with the
> following number of radials:
>
> 0,2,4,6,8,12,16,26
>
> VSWR bandwidth was best with 0 radials (DUH...lots of resistive loss!)
> Feedpoint Z dropped from 79 ohms with 0 radials to 29 ohms with 26
> radials.
> The predicted Rrad is 25.4 ohms
>
> 73,
>
> ...hasan, N0AN
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