JC, Jeff et ux: Without stirring up some who don't like math (it has happened to me before on this subject on this reflector), be careful that you don't exceed the vertical bearing pressure of the so
Ben: My recommendation would be to use four DC-grounded folded vertical dipoles spaced around the perimeter of the water tank, and fed with the appropriate phasing harness. Check out Cushcraft's comm
Roger: Those folded dipole are INTENDED to be used in front of a reflecting steel support pole, etc. They provide a directional pattern using this reflective material as a passive part of the radiato
Dave: I stick-built my Trylon T-500-64 five years ago. It took me about two hours per section to erect it by myself. My comments are embedded below. Good luck with the project. 73 de Gene Smar AD3F N
Paul: From your description I'm not sure exactly how your PVC is configured at each end. Assuming your PVC emerges from the ground vertically, you ought to include a PVC U-turn (two 90-degree elbows)
Ed: My first suggestion to you: Use 4 inch conduit if possible. I used three inch because that was the max width hole my DitchWitch (tm) would cut for me. I should have at least tried to sink 4 inch
Ed et al: <Big snips throughout below>. 73 de Gene Smar AD3F I guess the size of the conduit depends on how many right-angle pulls you go through, in addition to the number of cables. Most folks in t
TT: In a similar vein, Sam Goldwyn of MGM studios once said, "Oral contracts aren't worth the paper they're written on." Get it in writing if possible. 73 de Gene Smar AD3F __________________________
JC: I (and most others here on TowerTalk) would advise against placing copper tubing in intimate contact with galvanized steel. So that would eliminate your first suggested alternative. I use Harger
Ed: <Do what the manufacturer (of the tower) says.> Your question sounds as if you're winging it regarding the concrete base for your tower. I wouldn't stray that far away from conventional foundatio
Mike: No experience with this one at my QTH but try stringning 20 lb fishing line or string trimmer line a few inches above the element in question. (Not sure how to do this.) Folks on TT have said t
Jon: Here ya go: http://k7nv.com/notebook/towerstudy/towerstudy1.html . It'll get you started. GL es 73 de Gene Smar AD3F _______________________________________________ _____________________________
TT: Most of the commercial solutions suggested here are internded to be installed on straight, non-tapered tower sections. The Trylon towers are tapered. If the suggested brackets are used to mount v
Adrian: Indeed it would be good to keep the top of the concrete pour wet by covering in old cloths or rugs and hosing it with water frequently during the curing process. This will prevent the water f
JC: I have a belt and positioning strap from Buckingham ( http://www.buckinghammfg.com/linemen/pcbb.html .) I believe the model 1958 is closest to the one I have. My positioning strap is from their A
Larry: I spent my first ten years out of college as an engineer with the local electric utility, designing substations, among other things. One reason that distribution lines might seem more noisy is
TT: Two points then I'm done: 1. The word <electrocution> didn't exist at the time of the Edison/Westinghouse battles. It had to be invented to describe the method of execution by electricity. 2. Edi
Dave: Shouldn't the RX's AGC be turned off for these measurements, too? 73 de Gene Smar AD3F _______________________________________________ _______________________________________________ TowerTalk
Scotty: Five years ago (at a much younger age!) I bent about 20 #6 (3/4 inch) rebars for my tower project in less than a couple of hours. You'll have to make a trip to the local Home Despot or Lowe's
Mike: While you're recuperating this weekend, you might want to get some electrician's putty at Home Despot or Lowe's to use with your one-shots. The first one I fired off leaked out through the bott