I have a second question about short radials: If you were to improve the ground under a K9AY loop by using radials, how many and how long? 160m only. Thanks, Mark, N5OT -- Original Message -- From: "
Careful now, you're talking to someone who doesn't get a lot of RF hocus-pocus. All I know is K9AY says "a ground rod is usually sufficient" but I'm pretty sure he doesn't elaborate too much on what
Missing piece of the equation: 1. How much of it will be inside the tower, 2. how much will be outside the tower, and 3. how far above the tower would this antenna be? Can't answer until we know thes
I have done that with Hygain and KLM shorty-forty elements, both. (I.e. if I'd have had Force-12 elements lying around I would have used them) I removed the factory linear loading, then handmade sma
Woops. I wrote an erroneous double negative. "I don't think [it] ... would not be hard...." I DO think it should be EASY to do this. Mark, N5OT _______________________________________________ _______
Sometimes I pump in some hotglue to have what I am thinking is the same effect. You dribble it in out of the hot glue gun, it goes in there, it hardens, and then when you use your heatgun to shrink
Maybe this is a dumb question, or maybe not. I appreciate that one can "avoid" pigtails by using connectors, but if one ultimately has to connect to an antenna with some kind of lug, and for whatever
Wow, a lot of science and anecdotes about stacking dissimilar yagis. The current NCJ has an excellent article by N4GG on this very topic, explaining why sometimes you can't just connect the coaxes to
Greg, excellent that you're getting interested in contesting. Fun and challenges since the 70s here! Pete says pretty much exactly what I was going to say, with one exception: I like 80 feet for my 4
Resonance is definitely over rated. All that matters is that the radio waves squirt out and your transmitter is comfortable. 73 - Mark, N5OT _______________________________________________ _________
I'm pretty sure the exhaustive series in the NCJ stated the benefit as a function of distance from the water expressed in wavelength, i.e. it's a function of frequency. Zero distance is best, and it
Hi John, The Caltech Radio Club inherited one of those once (eight 8' sections = 64'). We took it down just like that - with a hacksaw at every other joint. We left it in double-sections (I think we
I just found out I have a smoking room (double) at the Crowne Plaza and would prefer a non-smoking room (double). By chance is there anyone on here who is the other way round and wants to trade? My r
Quick question: I recall some years ago didn't Rohn quit making torque bars for 25G for some reason like they were shown to have no structural value or something? Didn't they start selling them again
Re: vertical antennas you can use on multiple bands with a tuner, are there magic lengths? I would just as soon put up one for "the low bands" and one for "the high bands." Or whatever. I figure the
Very fine, gents. Thanks. Much appreciated. More information: I will be taking a vacation to Belize and will be there for the CQWW CW contest. I will take a 100W radio with an external tuner. I will
Anecdotal datapoint: I installed power company grips on all my towers in 2002 and none of the towers have fallen down. 73 - Mark, N5OT _______________________________________________ ________________
Final decision: for 30-10m I built a 40' long coaxial dipole, ran it up the tube and fed it at the base. I tested it in Sweepstakes and it seemed to work quite nicely, using the exact radio setup and
All I am saying is that 18 Yagi antennas and the associated switching to cover 20/15/10 in two fixed directions is a lot of work. Jorge, two towers with arrays pointing different directions is a goo