David, I have pondered using this style insulator but have had concerns as to how well they could survive the forces you experienced which led to failure. One option would be to fabricate a pier pin
After reading John's (KK9A, P40A) post regarding tower painting, I have a question for the group. While I would be hard pressed to recall a tower I have worked on that has not had its feedlines and c
Art, Cadweld is one product, made by Erico. Thermoweld is another. Erico calls their single use products Oneshot and yes, the ceramic mold can remain after the fact. One shots are cheaper up front be
Also, make sure to install safety wires through the turnbuckle eyes as well as the turnbuckles so that the Phillystran cannot "unwind." This is mentioned in the Philly install instructions. 73, Jim W
Just curious..... does anyone have experience with the Hy-Gain GWH-1 guy wire tensioners? I just saw these listed on a website. I don't need any as I have the Klein grips and judging by the Hy-Gain p
Rohn does not spec an antenna boom length in excess of 10 feet for this tower nor do they recommend it. _______________________________________________ _______________________________________________
In regard to your boom truss question, you can get some horizontal stabilization by employing a four point truss. Rather than anchoring single truss wires directly to the mast, place a boom above the
Dan, 1 1/2" nominal pipe will have an outside diameter of 1.9 inches. This is true for either schedule 40 or 80. 73, Jim W5QM ________________________________ From: Dan Bookwalter <n8dcj@yahoo.com> T
Has anyone modeled hexagonal beams with regard to height above ground? I am very leery of the statements that they perform better when lower to the ground, specifically that on 20m, a height of 40 fe
Today I discovered that I have had environmental ingress beneath the outer jacket of some ~8 year old LMR-400. What I saw was a white powder like substance between the woven shield and the foil. Also
LMR-400 Standard is what I was referring to. Jim W5QM ________________________________ _______________________________________________ _______________________________________________ TowerTalk mailin
Rob, I had a motorized LM470E tower. It had no mechanical stop for tower extension to 70', only a limit switch. The tower will not extend completely out of the top (there is a mechanical limit) but i
This is the best case example of why you hire a professional engineer. Suitable guy anchors will be designed based upon an analysis of your soil.The same goes for the tower base. Do it right the fir
Rick, First and foremost, do NOT buy used climbing gear! Your life depends upon it. View the purchase of new gear as an inexpensive life insurance policy. You do not know the incident or storage and
Forget about SteppIR antennas! Unless you enjoy mandatory and frequent maintenance, one of these antennas is not for you. I have seen too many suffer mechanical failure where the fiberglass tubes con
The easiest method would be to just place the rotator lower in the tower. If you really want to cut the mast, then a portable bandsaw is the way to go. I have done this before but I'm not sure I woul
Hi gang, I am in the market for a rotary or demo hammer for remodeling work. I am looking at tools that deliver 7-10# percussive force (10-14 joules).What is the size recommendation for a rotary or d
Dwight, I have used corrugated cardboard flatstock and fabricated my own boxes. It is available at most stores that sell boxes and is sized similarly to plywood. Bear in mind that shipping companies
I agree that chicago grips are necessary tools for tower work, right after gin poles and tower jacks. However, guy wires are most often broken up into non resonant sections by multiple insulators. If
The theory says.... f(mHz)/234=length in feet of each dipole leg so 234/3.615=66.57 and 234/3.515=64.73 the difference is 66.57-64.73=1.84 feet or 22 inches Start a bit longer and trim as needed. __