[time-nuts] Freestanding mast

Steve Rooke sar10538 at gmail.com
Fri Sep 3 04:31:32 UTC 2010


If your nearby houses and obstructions are not high, IE. if the houses
there are single story, you may be able to get away with what I have
done. Instead of fixing something on the house, I've attached a couple
of antenna to the top of one of my washing line poles in the garden as
this faces South (I'm in the Southern Hemisphere) and I get an average
of 7-8 sats every day and up to 12 at night. It makes any maintenance
easy, if you get any snow it is easy to clear at that height, there is
much less windage if your subject to strong winds and, if you don't
use your washing line, the size of the poles make them quite rigid so
you don't suffer a lot of noise that you would high up on a thin pole.
Just a thought.

Steve

On 3 September 2010 12:46, Charles P. Steinmetz
<charles_steinmetz at lavabit.com> 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 limited.
>
> Ideas?
>
> Thanks,
>
> Charles
>
>
>
>
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-- 
Steve Rooke - ZL3TUV & G8KVD
The only reason for time is so that everything doesn't happen at once.
- Einstein




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