I think that's the same article referenced here earlier by W9AC. And yes, the tower base by itself doesn't really qualify as a Ufer ground. The rebar cage, distributed throughout the foundation and l
I'd bet that the manuals for many amateur antennas are indeed copies of copies, and a master copy in digital format probably never existed in the first place. In those cases, the manufacturers probab
I'm sure that is good stuff, but at $64 per 1000 feet for bare #16 you can do almost the same for #14 wire at Home Depot, especially if you include shipping. There is a guy on eBay who fairly regular
There are various additives that give cement products better adhesion, the most common being some form of acrylic. Milk was even sometimes used in the past. You can buy the acrylic additives in quart
Unless I missed something along the thread, I'm not sure he's using any sort of line isolator at the feedpoint either. If that's the case, he's probably got lots of interaction between the radials an
You can also check out the many photos on the AN Wireless site. http://www.anwireless.com/photo.html 73, Dave AB7E _______________________________________________ ____________________________________
Force 12's own website says their more recent coil-loaded Delta 240 is intended to replace the older linear loaded EF-240S, their explanation being: "The most difficult aspect of the antenna was tuni
I've always liked the Moxon performance features (broad bandwidth, great F/B, smaller turning radius), and even considered buying the OptiBeam OB2-40M for a while until I decided to stick with the lo
Wrong again, Carl. I've seen it mentioned here several times on this reflector that radials such a small a percent of a wavelength above ground really don't act as tuned elevated radials since they c
I don't get it. That's going to generate several thousand documents to wade through, most of which won't address your claim. Why come back with such an obtuse and evasive answer if you actually have
I'm going to take WA9FPT's advice from here on out, but just to clarify: a. The other comments come from people with more credibility than you have. b. I never said that it was necessary to pursue a
Rick, maybe the experts will correct me, but I don't think symmetry is particularly important for a radial system. You should get better performance in whichever direction you have more and longer ra
I have a question for the math and/or transmission line experts on this list. The ARRL Handbook has some good info on using two different sections of transmission line, each with different characteri
I agree, Terry. If aesthetics aren't a big issue, I'd put as much surface area of metal up there as I could. In that vein, larger diameter wire is helpful as well. For what it may be worth, I have fo
Hi, Brett. I think you are correct on all counts, even though I still think radials close to the ground (in terms of a wavelength) tend to as if they were actually on the ground. That sounds contradi
That would seem to me to create more liability, not less .... Dave AB7E _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTal
With all due respect, I don't believe that is true. Higher is almost always better, especially on the low bands, at least if you're trying to work beyond the adjacent state. Better takeoff angle, low
Tony, sorry to say this, but if you think free climbing a 42 foot tower is any safer than a taller one, we'll probably be reading more about you before you get old. Dave AB7E ________________________
Time for us to lighten up on Tony. He has taken the feedback to heart, ordered some safety gear, and intends to use it. 73, Dave AB7E _______________________________________________ _________________
Doug, That seems awfully silly. Why would it take more than one instance to prove its value? There's already at least a few ex-hams who ended up permanently below ground solely because they DIDN'T ha