Anyone ever used something like this for a 150 foot tower? Keith NM5G A year ago a few guys on here told me to use a sign installer to put up my crankup. What a great idea that was!! One hundred doll
I would not do it for two reasons. 1. Modeling this antenna to avoid f/b problems on 40 is quite complex. 2. The boom is likely not up to the task of additional wind loading. I would add another boom
This weekend I plan to put up a tram line from tree trunk to tower. What is the best way to attach to the tower? TIA Keith NM5G _______________________________________________ See: http://www.mscompu
Thanks for the advice. The antenna is F12 C-4XL (30' boom, 65 lb) and will be mounted two feet above the top of the tower. I like the idea of rope loop on the mast with carabiner. A mountain climber
I am thinking this depends on weight of antenna and strength of mast. Just to be safe I am planning to buy a roll of polyester rope to back-guy the tram line. Keith NM5G Is a TH6 on R25 w/2 in. mast
Interesting? Lightning strikes wherever the excess electrons can be transferred. Pretty hard to predict where this will happen without extensive knowledge and monitoring equipment. Keith NM5G Now, ta
I have found a good assortment of stainless steel hardware at Lowes and Home Depot. Texas Towers might be a good place to check for specific tower hardware. Talk to Gerald (owner). Keith NM5G Am look
Stainless is best for things like shackles, nuts, washers and lockwashers. Hot dipped galvanized hardware lasts a very long time. Electroplated hardware (zinc) must be painted to avoid rust. Avoid st
Thanks for the tip. Also, I have found that the SS hardware sold for sailboat owners seems superior to that made for other markets. But, it is quite expensive. Keith NM5G I have had great success usi
weatherproofed, and that the rubber boot is insufficient to prevent moisture and other things from entering the backshell of the connector. Interesting. My G-800SDX was up 5 years and finally got st
I think you should call Jim Terleski at http://www.arraysolutions.com. He has quite a variety of off-the-shelf switch boxes and SO2R stuff. Keith NM5G I'm looking for an HF antenna switch matrix (or
Yes, it would be nice to use Phillystran or other Kevlar products. But there are two real big negatives that will keep most from doing it: 1. Expense - 1/4 EHS equivalent is 6700, $1.29 per foot, plu
That is a great idea! Thanks. Keith NM5G This reminds me... One can relieve a lot of sideways forces on the top of the mast when tramming up a large, heavy antenna. The trick is for the tram line run
Oops, that should be JAY Terleski. I think you should call Jim Terleski at http://www.arraysolutions.com. He has quite a variety of off-the-shelf switch boxes and SO2R stuff. Keith NM5G I'm looking f
What importance does inductance have in grounding a roof mounted antenna? I would think impedance is the prime concern. Keith NM5G Hi, David and all; 3-5 parallel copper wires spaced 2" or more is as
What frequency? I have always looked at lightning as a low/no frequency flow of electrons, i.e. like a DC current. Keith NM5G Isn't most impedance in a length of copper inductance? The resistive comp
I had Phillystran (100 foot length, remainder EHS) up on the top set of guys on the 150 foot tower for five years, both ends connected with a single shackle. These guys were moved to the bottom when
A good place to look for height versus guy requirements is the Rohn catalog. Details are available also on the Rohn web site (www.rohnnet.com). Keith NM5G For a bit of input: I've installed a few tow
WOW! This is about as bad as it gets with lightning. I have heard and read that lightning will not explode concrete. I hope Pete got some photos of the damage and will post them. I can host them on m
I built my first tower using locally purchased steel. The legs were one inch by 1/8 inch box tubing. The braces were 1 inch wide 1/8 thick plate. Each section was 10 feet in length with one size larg