Not necessarily. According to the ARRL Handbook (or maybe it's the Antenna Book) and Polyphaser, the optimum configuration is to install lightning suppressors at *both* ends -- at the tower and at th
Jim, That's a pretty steep hill. K4SQR told me the feedpoints should be at the same elevation. That caused me to find the flatest part of the hill I could for my 40m 4-sqr. The max difference in feed
Hi. I'm putting together specs for a tower installation that will consist of 100' of Rohn 45G or 55G (or equivalent) with pier pin base. The local zoning administrator would like some detail on the c
I don't see a drawing like that in my Rohn catalog (a recent but pre-Radian version that's pretty-much identical to the online catalog.) On drawing C870710R3 it shows the guy bracket and link, but no
Jim, I just used a bunch of Cadweld Plus One-Shots, and they work just like the old Cadweld One-Shots. They give you the same two-part charge in a blue bottle. My understanding is that Erico got a st
I forgot to mention that after seeing the deep grooves in the aluminum pulley wheel, I shudder to think what would have happened to the plastic sheave in the pulley I used to tram the 40-2CD. Thanks
Hmm... 1/8 wave above the ground for elevated radials... now, at 160m that would be about... 60 feet! Compared with actually trying to achieve that miracle, I guess it would be worth the trouble to l
That may be the case for your local building/electrical code, or perhaps what your inspector *thinks* is required, but it's not required by our local code. That's because it's not required by the Na
I use Green Heron controllers on all three TIC rings in my 3-stack of 4-el SteppIRs. So far, nary a problem (knock on wood -- they're rotors, after all, and TICs to boot.) The antennas always end up
I agree with Steve. The priority is protecting the house. With arrestors at the tower only, a surge could be induced in the portion of the cables leading from the tower to the house, and there would