The (80m) 4-square here went live the day of last CQWWSSB.
It's "quickie" radials were raised, 4 per element, starting from ground
level, going up at approx 45 degrees to 7-10 feet, and then sort of drooping
a bit (to 1-6 feet depending - it was softdrawn). It worked.
(there were also 4 1/8 radials on ground per element that I'm guessing
didn't do much).
Anyways, resonance was approx 3775 per element - after putting down 48 on
ground radials each, resonance per element dropped to approx 3540.
I was and still am surprised - and I'm not drawing conclusions! I do however
think that it works better with the ground radials, but no way to really
tell
73
Ted KR1G
>From: "Bill Gerhold" <Billg@warwick.net>
>To: "La6wea" <la6wea@online.no>, "Topband" <topband@contesting.com>
>Subject: RE: Topband: Elevating radials
To: <topband@contesting.com>
>Date: Wed, 10 Oct 2001 20:09:45 -0400
>
>I used elevated radials on an elevated (3 foot off the ground) 80 meter
>vertical.
>I ran the radials at a 45 degree angle from the base of the vertical up to
>a
>10
>foot height and then horizontal from that point on. Using an antenna
>analyzer,
>I found the resonant frequency of the vertical moved to 4.000 mhz. The
>design
>height or length of the vertical was supposed to be 3.750 mhz. After
>installing
>30 elevated radials, I tried an experiment and removed the elevated radials
>and ran 30
>radials at a 45 degree angle down to the ground and then on the ground from
>that point on. The resonant frequency of the vertical came down
>dramatically
>to the design frequency of 3.750mhz. This seems to indicate that using
>elevated radials does raise the resonant frequency of the vertical if the
>radials
>leave the base of the vertical to a position higher than the base. Just my
>actual experience. BTW, I left the radials on the ground. Much easier to
>handle.
>
>Bill
>K2WH
>
>
>-----Original Message-----
>From: topband-admin@contesting.com
>[mailto:topband-admin@contesting.com]On Behalf Of La6wea
>Sent: Wednesday, October 10, 2001 14:05 PM
>To: Topband
>Subject: Topband: Elevating radials
>
>
>Hi all.
>If I understand you guys right. adding toploading to a vertical actually
>shorten the effectiv antenna if the slooping wires are slooping down at
>that`s say 45 deg. What will happen to a ground mounted vertical that have
>radials slooping upwards 20 feet at 45 deg and the rest horisontal. Will
>the
>radials shorten the radiating part of the vertical ?
>
>73 Ken
>
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