For a tripod I've used a small, inverted rotary washing line. These come complete with quite a lot of very strong rope and a packing bag. Remove the rope to use as guys for other, larger antenna systems. 3mm poly cord is easily strong enough to guy a fishing pole using tent pegs. You might also look at loudspeaker stands. To stabilise them, I've used a bucket full of rocks hung from the centre.
A lighter weight solution I've used is a hinge arrangement with a spike pressed into the ground all made from 15mm copper plumbing pipe. This is assembled to a plastic pipe into which the fishing pole is positioned. Makes for a tidy all-in-one support. Photos on request. David G3UNA ----- Original Message ----- From: "Paul Christensen" <w...@arrl.net> To: "'Elecraft_List'" <elecraft@mailman.qth.net> Sent: Friday, July 17, 2009 4:57 PM Subject: Re: [Elecraft] K3 >> Can someone recommend a portable push up pole that I can use for the >> center >> insulator and then come down in an inverted V Thanks Phil > > I have an interest in a well-designed telescoping pole as well, preferably > 20-25 ft on a stable tripod. > > In thinking this through for a while, I've also decided on an inverted "V" > for field use. The Vee will be fed with 300-ohm ladder line and line > length > will be adjusted pursuant to W5DXP's data to present a near 1:1 VSWR on > all > bands from 40m-10m > > http://www.w5dxp.com/notuner.htm > > In doing so, I've decided to prepare pre-cut line lengths with banana plug > connections in lengths of 16', 8', 4', 2', and 1'. Changing line length > does not change the 300-ohm VSWR, but it radically affects the end-of-line > Z > and the 50-ohm VSWR. And so, by manipulating these five plug-in line > sections, a near 1:1 50-ohm VSWR is possible without a tuner and system > losses are minimized. A 1:1 current balun will form the transition > between > the switched ladder line sections and coax. > > I thought about using the Budidipole system or one of its variants, and > finally decided that I could attain better 40m-10m efficiency in the field > by (1) changing line length; and (2) using a trap-less half-wave antenna > length on the lowest frequency -- and make simple "plug-in" changes on the > ground rather than by changing taps up on a telescoping mast. Moreover, > since there's a need to tether a 20-25 ft. telescoping mast anyway, it > makes > sense to use the Vee as two of the three guys. > > Paul, W9AC > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
