Gregg
I use an AV-640. The feedpoint box is 7 ft above ground. Any closer and the
tips of the droopy radials get close to the ground and that is not
recommended.
It stands out in the open on a tilt over base, similar to the one GAP sells.
I worked recently into D64K Comoros Island and into 9M4SLL Spratly Island on
30 meters with it. Both approx 9,000 miles from here in different
directions.
I also have a full 1/2 wave vertical on 40 and the two antennas perform
equally well .
Mounting it at a shed or house will be tricky. Especially when you have to
raise and lower it to make the tuning adjustments. That is why I use the
tilt over base. The antenna is easily walked down once the retaining pin is
removed on the base.
Best Regards
Dan Schaaf
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K3ZXL www.k3zxl.com
60 Meters www.60metersonline.net
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-----Original Message-----
From: Gregg Seidl
Sent: Wednesday, August 15, 2012 8:54 PM
To: TowerTalk@contesting.com
Subject: [TowerTalk] Speaking of AV-640
I haven't used a vertical in decades and those were ground plane types when
I was a poor young novice.
I bought an AV-640 to use as a back-up or second antenna and I'm wondering
what seems to work best at mounting it.I have several choices:ground mount
it with the bottom being 5 or so feet off the ground. Mount it to the side
of my metal shed with the bottom 5 or so feet from the top of the shed,this
would place the base about 24 feet above the ground and out in the open but
it would be 50 feet or so from the 14.4Kv line to our transformer. Third
choice would be to mount it about 15 feet or so up on a metal pipe that
would be guyed and cemented in the ground. I want to try SO2R on RTTY only.
I am totally deaf in one ear so I can't do SO2R on SSB and I'm not good
enough on CW. Any thought or ideas would be great.
Gregg K9KL
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