From what I have read, you need tube rather than pipe; and square-section tubing would eliminate the rotation problem. But it seems to me that what you are trying to do is reinvent the US Tower Corp.
I have never heard of that brand, but the K2550 is only $179.95 at http://www.crofttrailer.com/site/products/199/201/1477/details.html -- maybe less than you were thinking you would have to pay. 73 A
Talking to a fellow club member (and close neighbor) during Field Day, I heard about a tower-climbing misfortune of his. On one occasion he climbed his 30+ ft tower without a belt because it was such
Speaking of coax, what would people suggest as a suitable coax to feed a 440MHz antenna 70 feet up on a crank-up tower (so the cable has to be flexible enough to coil up when the tower is retracted)?
These include figures for Davis RF's Bury-Flex as well: http://davisrf.com/ham1/coax.php#attenuation http://davisrf.com/hardline.php (at the bottom of the page) 73 Alan NV8A _________________________
I've read that copper in contact with zinc (galvanized) is a no-no. I've done as suggested by Polyphaser (although not always using their products): I've used stainless steel strips (cannibalized fro
Assuming they work as well as the Polyphaser units made for rotor control wires -- which is what I used for my SteppIR control wires -- they would have been a far cheaper and perhaps more compact sol
I think you may find that the ones that taper down to a point are resting on a ball or other flexible mount that enables the tower to sway a little without breaking off. This answer is based on my re
I don't know about RFI, but our neighbor returned a dog-containment system because it kept shocking their pet when it had *not* crossed the invisible boundary. I don't know what brand, but I could as
I'm using Polyphaser equipment, some bought from their booth at Dayton, some bought from DX Engineering, whose service was exemplary. 73 Alan NV8A _______________________________________________ ____
How is the ordinance worded? Park Township's (near Holland, MI -- but it's not the municipality in which I live) ordinance refers, I am told, to the height of the "tower." Thus some hams have argued
I used #4 insulated stranded copper wire with bronze clamps (such as are available at Lowe's or Home Depot) on the tower legs but separated by a layer of stainless steel cut from a hose clamp. "Acorn
Back in March the company was listed for sale on eBay, of all places. $2.7 million. No idea what happened to it. 73 Alan NV8A _______________________________________________ _________________________
Note the following from p. 7 of the Polyphaser Technical Document TD1016.pdf (http://www.polyphaser.com/NR/rdonlyres/C1565001-F81A-4AC2-A98F-E88B8037F988/182/TD1016.pdf): "Since all towers have some
Note the following from p. 7 of the Polyphaser Technical Document TD1016.pdf (http://www.polyphaser.com/NR/rdonlyres/C1565001-F81A-4AC2-A98F-E88B8037F988/182/TD1016.pdf): "Since all towers have some
When egg insulators are installed correctly (see the picture to which somebody already posted a link), a loop at the end of each wire/rope/cable passes through a loop at the end of the other. So even
My US Tower HDX-555 has the motorized up-down option, but the tilt-over feature still relied on the standard K1550 winch. I found the standard winch to require a fair amount of force when tilting the
A couple of years ago I paid only approx. $900 to ship my new HDX-555 from the factory in Kansas to W. Michigan. I *think* they might have simply found an owner-operator trucker who was heading back
There is also: Icom Service Center - Michigan 1792 Nash Drive St. Joseph, MI 49085 (269) 429-2334 (6pm - 9pm; answering machine at other times) The official name is SAR Technical Services (they work
I've had my 3-el. a few years now, but I'm pretty sure that my card was not charged until the antenna was ready to ship. 73 Alan NV8A _______________________________________________ _________________