Make sure you are sitting down when you check the shipping charges. 73, Dick, W1KSZ
-----Original Message----- >From: Stanley Reynolds <stanley_reyno...@yahoo.com> >Sent: Sep 2, 2010 9:16 PM >To: Discussion of precise time and frequency measurement <time-nuts@febo.com> >Subject: Re: [time-nuts] Freestanding mast > >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 <charles_steinm...@lavabit.com> >To: Discussion of precise time and frequency measurement <time-nuts@febo.com> >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 -- 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. _______________________________________________ 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.