I don't have problems with noise...which may be why RX antennas don't perform a
whole lot better than my TX antenna. I wouldn't say it's extremely quiet but
it's not excessively noisy. Hope to play more with antennas this fall and
winter.
Cecil
Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------
From: Mike Waters <mikewate@gmail.com>
Date: 8/7/18 4:58 PM (GMT-06:00)
To: Phil Duff <na4m@suddenlink.net>
Cc: topband <topband@contesting.com>
Subject: Re: Topband: making a bev seem longer
A loop such as that has a very narrow null at very low angles, and
therefore it's usually not very effective for anything except for local RFI
or another local ham. For power line or nearby QRN, it's useful. But that's
about it. There are much better RX antennas.
73, Mike
www.w0btu.com
On Mon, Aug 6, 2018, 7:37 PM Phil Duff <na4m@suddenlink.net> wrote:
> > On Aug 6, 2018, at 7:06 PM, Cecil Acuff <chacuff@cableone.net> wrote:
> > Wish I could find an effective RX antenna that showed a great s/n
> improvement over the L.
>
> Look into a magnetic loop such as the design by N6RK as described in a
> past NCJ:
>
> http://www.n6rk.com/loopantennas/NCJ_loop_antenna_N6RK.pdf
>
> I use one on 160/80 and find it effective at improving the S/N ratio over
> my vertically polarized 160m and 80m transmit antennas.
>
>
> de Phil NA4M
>
>
_________________
Topband Reflector Archives - http://www.contesting.com/_topband
_________________
Topband Reflector Archives - http://www.contesting.com/_topband
|