I was just about to suggest a ham antenna tower. The triangular truss design is very rigid, yet presents low wind loading. I think there are application notes that help with siting and selection.
Rohn is a very standard and pretty well respected name in the business. They also have a good selection of accessories. In this area, I see them at ham fleas on a regular basis. FWIW, -John =============== > ROHN 9H50 34 Foot Telescopic TV Wireless Antenna Push Up Mast > > http://www.3starinc.com/rohn_telescopic_masts.html > > I don't know this vendor just the first that came up in google. > > Stanley > > > > > > ----- Original Message ---- > From: Charles P. Steinmetz <[email protected]> > To: Discussion of precise time and frequency measurement > <[email protected]> > Sent: Thu, September 2, 2010 7:46:00 PM > Subject: [time-nuts] Freestanding mast > > 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 -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
