[time-nuts] Freestanding mast
cfharris at erols.com
Fri Sep 3 00:57:59 UTC 2010
It may not be a problem where you are, but I should think that
lightning might come to mind.
Do you really want your GPS antenna up very high?
Charles P. Steinmetz wrote:
> I'm curious what the best freestanding mast is for a timing antenna
> (think Lucent timing antenna or marine "mushroom" GPS antenna -- light
> and pretty small). The mast would have its highest support at rooftop or
> chimney-top level, and could extend from there as far downward as the
> ground with additional supports as required. Should be able to survive
> at least Category 2 winds and heavy snow and ice.
> What reasonably available mast material no more than, say, 3" in maximum
> cross-section would allow the most vertical extension above the highest
> support, and how much extension would that be? I'm thinking 10 feet of
> 2" or so thin-wall steel tube may be OK, but beyond that I don't know.
> Tubing is probably not the optimum shape, but I assume the availability
> of other engineering shapes (say, "+" cross-section) is likely to be
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