I have a 10 ft mast holding / storing two 3L20's, a 5L10, and 3L10.
It sits in a 30? inch hole in the ground formed by pounding a short
thin wall steel tube into the ground, six inches at a time, removing
the tube, clearing out the dirt, and pounding it in another six inches,
until the desired depth is achieved.
For a 20 ft mast, I would suggest going deeper, say 4 to 5 ft.
Tom N4KG
On Tue, 02 Apr 2002 Robin Midgett <robin.midgett@vanderbilt.edu> writes:
> Greetings TT,
> I'm seeking constructive advice on how to hold a 20' mast upright on
> the
> ground while antennas are installed onto the mast. The plan is for a
> crane
> to place the mast & antenna assembly into the tower top once the
> tower is
> built & the antennas are on the mast. A stake through a plate driven
> into
> the ground is easy enough to keep the bottom of the mast from moving
>
> laterally; how should a person keep the thing upright without
> hindering the
> antenna installation?
> I have an idea of using guy wires to hold the mast upright & of
> using
> scaffolding as a work platform to install the antennas, working from
> the
> top of the mast downward. What say you?
>
> Thanks,
> Robin Midgett KB4IDC
> VHF+ Glutton
>
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