Go back and read K9YC's articles about many short radials close to the
feedpoint. Isn't the idea to reduce/eliminate losses?
When I added added the HF2V, I had about 4 radials and the BW on 80 was about
150 kc. I kept adding radials, and the bandwidth kept dropping - which is
good, since that means that that ground losses are being reduced.
The bandwidth finally dropped to about 50 kHz. For an 1/8 wave antenna, that
is pretty good.
Tom, N2SR
PS: How about a link to the arrl's mast calculator?
From: Jim Thomson <jim.thom@telus.net>
To: towertalk@contesting.com
Sent: Monday, October 24, 2016 7:20 PM
Subject: [TowerTalk] What do do on 80 when height restricted?
Date: Mon, 24 Oct 2016 19:40:06 +0000 (UTC)
From: Tom_N2SR <tom_n2sr@yahoo.com>
To: "towertalk@contesting.com" <towertalk@contesting.com>
Subject: Re: [TowerTalk] What do do on 80 when height restricted?
I second (or third) the HF2V. ? I had one up with about 60 radials for about 6
years. ?Before I put it up, I had less than 30 countries on 40 and 80. ?When I
took it down I had 240 countries on 40 and 185 countries on 80. ?
I was even able to create a switching scheme to switch resonances between cw
and ssb. ?
Tom, N2SR
## and how do you install 60 x long radials on a city lot ? Even if the
vert is elevated, the radials then HAVE to be long, to resonate it on 80m.
Thats tough on a city lot. The problem with ground mounted verticals,
on city lots, is they radiate into the home. Then with stucco homes, there is
chicken mesh beneath the stucco... and ditto with the neigbours, like being in
a faraday shield. Once elevated in the clear, the difference can be
astounding. But radials on the low bands like 80m is tough.
Jim VE7RF
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