Hello Charles,
Last September I had some roof work done and I had added 2 each 1-1/2"
vent pipe penetrations just below the ridge.
Now I have a place to add the GPS antenna, either a hockey puck type or
a more sophisticated one.
The hockey puck was added to a length of PVC conduit to penetrate the gland
The GPS antenna is just level with the roof ridge, for no blockage.
Previously I used a MS-44 aluminum military masting tripod tower to put
the GPS antenna just above the gutter height ~ 11' high.
The rest of your questions I would have to find a PE.
Stan, W1LE
On 9/2/2010 8:46 PM, 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 limited.
Ideas?
Thanks,
Charles
_______________________________________________
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
_______________________________________________
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
