Point taken -- I did not do a magnet test. Anyway, it's ruggeder, which is the point I was making. Interesting -- I *presume* that all 3 (4) units operate on the same basic principle, and so share th
Those folks will inflict serious financial pain. I went down to my local highway department maintenance yard and begged a road sign with a bullet hole (or something) in it. Cut a piece to fit in a wo
Like Gary, I get at least 2-3 a day, and always delete the attachment first. However, the virus protection sites all warn that this worm is capable of infecting your PC even without your opening the
In the middle of the force12 bashing today I asked Natan about the separate feedline option. Here's his response: "The C31XR can be ordered as a single feed line version or a multiple feed line versi
I agree, as long as the Polyphaser guys acknowledge that most ham installations do not need to be connected to their antennas 24/7, and that their solution will not be cost-effective or EFFECTIVE, pe
Yes, but commercial installations are designed from scratch to do this. If you look at the illustrations of "typical installations" in Polyphaser literature you see very short, broad copper strap con
Chapter 15 of the original Polyphaser "Grounds" book describes a radius of protection that is conferred by a grounded tower, based on the physics of the step leader that precedes lightning. They say
Use of DEM files to generate terrain profiles is a neat and quick way to do it without resorting to rulers and topo maps. A couple of cautions, though: 1. According to N6BV, "YT has a built-in limit
I couldn't disagree more. Three quarters of a dB is not to be treated so lightly, not in a station where all the easy/cheap dB have already been gained. I'm sure Bruce can handle the waterproofing of
I'm wondering whether this really works, for stacks at HF, where the ground is a small number of wavelengths away? It seems to me that identical antennas are far from it in that environment. In any c
Interesting... Here are the numbers on 14 MHz for a 2-high stack of 2-element yagis at 97 and 69 feet, as computed by YT (this is close to my antenna system, which uses C-3Es): At the very-low-angle
I've borrowed a copy of TA for some comparisons with YT, and find that I can't change either terrain or antenna files from within the program. Hitting T or A from the on-screen menu causes the progra
I've borrowed a copy of TA for some comparisons with YT, and find that I can't change either terrain or antenna files from within the program. Hitting T or A from the on-screen menu causes the progra
Just the concrete alone would weigh over 40,000 lb, which may help further to put the prefab base issue in perspective. This is a LOT bigger job to lift and put in place than any septic tank.
We went through an exactly parallel process here, ending up with all ham towers being exempted from the tower ordinance. Then they adopted building codes, but exempted any structure with a floor area
I made this transition, and I think Barry has a valid point. Certainly, the jump to a rotary dipole made a big difference in my ability to put a signal where I wanted, and the front-to-back ratio of
Fortunately, there is -- go to www.contesting.com, look in the left margin for a box marked list search, and enter your search terms there. It covers all of the archives of all of the reflectors host