I (we) lost our house in a lightning related fire 1998. It was a total loss. All that remained was ashes and charcoal. I had problems with the insurance company regarding the estimated value of my st
Steve, Mark, It is not that important how much torque or stretch you have in the bolt. Torquing has been used for generations and has been accurate enough disregarding variations in the friction. I b
Yes, I would also worry about the stretch of my tower bolts if my tower was jumping up and down 6500 times a minute. If you want to be that precise you have to worry about the exact hardening of the
Standard formula is F9(in lb)=V(in mph)*V(in mph)/390 F=V^2/390 73 de Hans - N2JFS --Original Message-- From: Gregg Seidl <k9kl@centurytel.net> To: Tower and HF antenna construction topics. <towertal
How heavy is 55G /foot or so, and how much torque is allowed? Then it should be rather simple to calculate how long tower you could pick up. Hans - N2JFS --Original Message-- From: K7LXC@aol.com To:
NO practical and economically palatable ground system is 100% protection from a direct lightning strike. NO ground system I've seen is 100% effective against all lightning strikes including the "supe
Your electrical inspector should study the code. :) Most electrical inspectors have risen through the ranks of pipe benders, and by kissing you know what with unions and politicians. There are, of co
How about stainless/copper MIG wire? At least it shouldn't rust. Maybe too expensive though. Hans - N2JFS --Original Message-- From: Roger (K8RI) <K8RI-on-TowerTalk@tm.net> To: towertalk@contesting.c
Can anyone help me out? I am in the process of putting up a 85' tower. I am presently looking into guy wires. The calculated maximum force on the guy wires is 2990 lb. I decided that 5/16" EHS 1x7 wi
Does anybody have some nice, juicy warning text to put on a tower that can scare away unwelcome climbers. I remember some years ago reading a warning text including:" Radio energy can not be sensed b
Thank you all for all the advice. Yes, I am putting an anticlimb devise, 8' high cover, on the tower but planned to put a sign on the cover to further enhance the anticlimb feature. The "Government L
It seems as the history continue to repeat itself. They are, simple, stalling my application and I suspect they hope "it will go away". Any positive and/or constructive advice is appreciated. 73 de,
There is an interesting effect feeding two identical dipole antennas. You will see an increase in bandwidth. I once tested making a (resonant), 5 ' long helix for 10 meter. I happened to make it a li
You can rub it with Scotchbrite pads to remove surface oxidation, Ah, but don't they look pretty glimmering in the sun...if you don't have any neighbors. I've always found the signals are louder wit
Another thing you might consider, unless it's already taken care of, is to make sure all power conduits and signaling conduits are running parallel to each other. I have a problem with that in my (re
A little warning is in place: When you run 120 volts supplies on outlets on different phases but common return, be aware that if they are of the "old" type, diodes feeding directly into capacitors, s
Hi Jim, Yes, you are right, a three phase system aggravates the problem but it is also present on on split phase feed. Worst case probably never happen, but my house in Brooklyn receives its power fr
Oh man, Jim, If you lived with it you love it. I spent the first half of my life in Sweden and I had three phase in my house (as well at work). How about; not start capacitors and an unreliable centr
The idea is to have NEW installations done with three phase. To upgrade an old is more expensive than it's worth unless you are building that 50 kW station or installing a major size air-conditioner
Gene, "Don't call the d-l". I purchased a house 1997. The house was >200 years old. Speaking to the insurance agent it was pointed out that the building had no lightning protection but as "the house