I have used such quarter wave top fed sloper on 160 for some years now.
Tower, 89 ft UST HD crank up (which is never all the way extended) is on
elevated pad. Other end of sloper is tied to rope from stake on ground.
End of it is maybe 20 ft up from ground there. I could never get the
sloping wire to tune, so I'm sure there is some interference from tower as
sections are not so clearly connected. But antenna works quite well with
NYE Viking tuner on it on coax down at ground level. Same tuner setting
works for all portions of bands I would operate. I don't work real DX with
it much but then on 160 from CA East coast is kind DX already. I have
occasionally received some comments from people who said I had good signal
on 160 and asked what I was using here. Hearing is another thing.
73 de Marko N5ZO
**************************
Message: 7
Date: Sat, 13 Aug 2022 18:14:40 -0400
From: <john@kk9a.com>
To: <towertalk@contesting.com>
Subject: Re: [TowerTalk] 80 meter vertical or
Message-ID: <001201d8af62$15a17bf0$40e473d0$@com>
Content-Type: text/plain; charset="us-ascii"
With a half sloper the tower becomes a radiator. Whether it works well or
not is very dependent on the tower structure.
John KK9A
From: Gene Smar AD3F wrote:
TT:
I do what Chuck does for 80M - half-sloper wire - 1/4 wl long - hung
off
the tower from about 50 FAGL. Coax shield to tower, center conductor to
sloper
wire. It works well, i.e. low SWR except at upper band edge, and work what
I
hear.
73 de
Gene Smar AD3F
On Sat, Aug 13, 2022 at 1:48 PM, Chuck Dietz<w5prchuck@gmail.com> wrote:
Won't need a tuner if the wire is cut to a quarter wavelength on 80. This
is called a "Half-Sloper" or "Quarter Wave" sloper. Should be plenty of
information about them online. Great DX antenna.
Chuck W5PR
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