Herewith a correction to my note re E-field antennas.
The active antennas in fact both used approx 1m whip and not 3m as indicated
in my note.
( I must have been thinking in feet and writing in metres !!). As I
indicated later in the note, I found that there appeared to be little
advantage in using a whip more than about 1m long.
73, Derek Atter G3GRO
----- Original Message -----
From: "Derek Atter" <[email protected]>
To: <[email protected]>
Sent: Saturday, August 31, 2002 11:20 PM
Subject: LF: Re: E-field antennas
Hi all,
Re Alan Melia's posting on E-field antennas (Aug. 25th), I confirm his
comment that I did carry out a number of tests on two E-field active
antennas each having roughly a 3m whip, one an ex-Decca Navigator design
using op-amps, and the other an AMRAD high dynamic range design using a
Crystalonics high current FET and published in QST in September last year
(I
think it was).Both of these designs feed DC up the coax to the active
element.
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