The original post was about using a C31XR on EIGHTEEN POINT ONE MHz. That's a band it was not designed for. And that a low dipole would beat it. Where did you get **TEN** meters from? Stick to the su
Dear Tom, Rant mode on: YES, BUT... The same problem I ran into the last time I tried to chase down VALIDATION of this angle business. The N6BV "STUDY" you quote is a RE-REPRESENTATION OF MODEL DATA.
I've spent as much time as anyone worrying over guy wire resonances. The ARRL anti-resonant sections are a myth. They don't work because the guy wires are in the antenna near field and currents are N
Yup, fiberglass if you know to manage the sproing and have some way to deal with the minimum order business. Good stuff. What kind of commercial installations? AM radio stations stay away from dipole
Many probably don't bother or notice, if the SWR is not killed, many would not care as long as a yagi seemed to have a pattern and took power. And someone can make the case that for much amateur acti
Thank you. Thank you. Thank you. (A big lead to running down some beef, aged though it may be.) I have three big university libraries around here to hassle. University of North Carolina at Chapel Hil
This is just so folks know what the dipole length = 468/f business is about. Note below the wild variation in resonant frequency, impedance, and SWR limits, just by changing height. The formula just
For this one, fill the bottom of the legs up to above ground with that dreadful expanding insulation foam (Great Stuff, etc), and just above the foam drill one 1/8 inch hole. You'll have to clean out
I have a Trylon 80' self supporting. But if AN Towers had been in business when I did mine I probably would have gone with them for various reasons. The thing that bothers me most about the Trilon's
I just went and looked at how to unsubscribe. It is not at all intuitive. One has to read, and comprehend, the fine print. The current setup is NOT user friendly. Mostly people will get it or go sear
An alternate some may wish to consider is a program called WinProxy from a company called Ositis. It is a firewall. I have it on the computer that talks to the DSL modem. It filters incoming html, em
Have to point out that the WinProxy for StarBand is a special variant that at one time at least kept an open port for the folks that run the satellite service, so they could keep the satellite respon
Yeah, except his resonance goes WAY down. This is a three band hookup, three pieces of coax to three separate DE's within a foot of each other. Caution: I find in my modeling of the C31 that what is
No way you get me to put a five band 20-10 antenna in between 40 & 80 antennas spaced only 12 feet. Something is bound to be detuned, either way, because the booms as well will be close to something
Force 12 makes a staggered 5 band (XR5) and an interlaced 30/40. Go to their web page. http://force12inc.com/XR5-intro.htm and http://force12inc.com/F12-specs-ef-r1-0.htm near the bottom. worked
They have steps and various gizmo's to help out with that. For a price of course. If they had been in business when I built my self-standing, I probably would have gone with them. Guy. pain to off, o
Steve's a Klingon. Thought everybody knew. Seventh cousin to Worf. He never climbs down towers, just jumps off. Sometimes heaves antennas to the top when he's in a hurry. Bit of a show-off, actually.
I wouldn't fix it. It's complained to you loud and clear about the overload. I'd call it "weakened". 73, Guy. helpless and be the moist loam had been you whole in the few out and
You drill a 3/4 inch hole through the bottom of a Rohn 25 section and you sure don't have much left over. It will just balloon worse when you load it up. Rohn 45 maybe you might get away with this, b
Moving the center of a 75/80 dipole from 65 feet to 75 feet is highly unlikely to change anything discernibly except the feed impedance of the dipole, and that not much. Are you thinking that 75 feet