What's wrong with sakrete? It's cheap, and it works. My 80 feet of R-25 with screw-in guy anchors has survived the collapse of 2 tribanders..... I suppose if I were made of money I could afford to ha
At the risk of starting a flame war.... you might try one of these on a push up mast http://www.hexbeam.com/ W4RNL has some interesting things to say about hex beams http://www.cebik.com/4.html Clear
In the now days, trees grow tall and straight.... Large Douglas Fir trees are cut every day in Oregon to make very high quality utility poles, that last for many years..... we would be glad to sell y
they quote prices on their site... $16,650 for a 341 foot tower sounds like a deal to me http://www.isotruss.com/guyedtowers.asp WB7RSG _______________________________________________ See: http://www
The thread about nonmetallic towers prompted me to contact the folks at IsoTruss. http://www.isotruss.com/default.asp about their guyed towers http://www.isotruss.com/guyedtowers.asp So I filled out
Bill: You're correct, for most amateur applications steel is probably the way to go..... but these are light enough to yank up and down, and if you were inclined to fool around with wire antennas it
According to the manual with my Steppir the matching circuit is a Jerry Sevick design 2:1 balun on a 2 1/4 inch ferrite core. It sounds reasonably simple and low loss to me. How much does the Force 1
You might want to look close at how the Warn winch works, make sure the brake functions every time, or you may drop the load (gravity is more reliable than machinery). Ramsey makes worm gear drive wi
Dan: For the truly frugal way out, I've used a Coke bottle stuck in the bottom of my 50 foot Rohn push up mast, and a 12 inch square cinder block to keep it from sinking into the mud (I'm in Oregon,
I bought the 40 foot version of this a few weeks ago... They make a 30 foot version also http://www.wonderpole.com/custom_telescoping_poles.html It was mentioned in the April 2004 issue of QST. http:
Jim: You might also point out that as line length increases match improves. An infinitely long 50 ohm transmission line will make an infinitely high standing wave ratio at the antenna end appear to b
Tod I'd bet if you have enough room for towers, you aren't anyplace that will have enough population density to support this kind of data service. In high density housing, or industrial areas, high s
I've been using a 1 turn "shielded" loop made from a large embroidery hoop and 3M copper tape (Digikey). The loop is made from 1/4" copper tape stuck to the outer surface of the inner section of the
There are several uses for Cutoff Frequency. In coaxial cables it is the highest frequency (shortest wavelength) that can be propagated down a given size coaxial line, at low loss. In waveguide it is