It would appear he is in Vermont and maybe intends the same thing, just with a
yagi. I'm going to say this is not a good idea. You're going to have about
50-55 lbs at the top of a 50 foot long moment arm, giving 1200-1300 lbs
effective moment and only a few hundred at the bottom. Not good enough. If you
truly feel the ground is too soft to use guys then you might try looking up the
term "drive on antenna base" and hamgeneering together something like
that. 73, David, AA9G ex W5DCG and KC9EEV
From: Larry Banks <larryb.w1dyj@verizon.net>
To: towertalk@contesting.com
Sent: Friday, January 22, 2016 11:05 AM
Subject: Re: [TowerTalk] field-day mast anchoring question
We (W1HP) put up a "two-el" inverted-V. Only takes two fiberglass poles for
the centers and no guys -- the wire acts as the side guys and the poles are
strong enough to not need guys in the fore/aft direction. If you are not
going to rotate it, why go to the trouble of a 2-el yagi? (From the Boston
area we just point WSW.)
73 -- Larry -- W1DYJ
-----Original Message-----
From: dw
Sent: Friday, January 22, 2016 10:31
To: towertalk@contesting.com
Subject: [TowerTalk] field-day mast anchoring question
For those familiar with the AB-621 military launcher mast units.
Lets say there was an interest in using this on a field day event, where
there is a concern that the ground is too soft to safely establish
anchors.
Is there a possibility of using concrete wall-barrier blocks bolted
together, as dead-weights to safely hold the anchors?
For example, I think I can come up with a number of 60lbs cement
wall-barrier slabs that can be bolted together for each anchor point.
If this would be a viable option, how much weight on the anchor blocks
would guarantee a safe installation?
The intent is to put up a 40 meter 2 element yagi, without a rotor, at a
height of 50 feet.
Thanks in advance.
N1BBR
--
Bw_dw@fastmail.net
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