Larry: It depends. I have my Polyphasers at the NEMA box at the tower base, but I also have a remote coax switch there, too. I connected the Polyphasers between the coax and the switch so that each c
Jim: You overlooked my caveat in my original e-mail: I have a remote switch in the NEMA box at the base of my tower. Had I installed the Polyphasers at the shack end, only one coax run (between the s
TT: I re-read this and my earlier post. It may not be clear that the Polyphasers to which I am referring are on the ANTENNA side of the remote switch, not on the shack side. Hope this clarifies what
Anthony: In 2001, when I built my tower, I made my own grounding kits: http://lists.contesting.com/archives//html/Towertalk/2007-10/msg00356.html . 73 de Gene Smar AD3F ______________________________
Barrie: The Skyhawk is my first Yagi as well (in 45 years as a Ham.) It seems to work as advertised - broad bandwidth on all three bands (below 2:1 on nearly all of 20 and 15 and below 29 MHz on 10)
Steve: Your direct addy bounced. Have another I can send to? Thanks. 73 de Gene Smar AD3F _______________________________________________ _______________________________________________ TowerTalk mai
TT: <snip> <snip> QST, August, 1996, page 35 is an article on the proper, engineered way to attach a tower via a wall bracket to a house. 73 de Gene Smar AD3F ________________________________________
TT: I believe I posted the last time this link was discussed that the climber would have about ten seconds of free fall to contemplate his fate. (y = 1/2gt^2, solve for t with g = 32 and y = 1760.) 7
Steve: Google is your friend. I tried <concrete form release> and came up with a bunch, such as http://www.wrmeadows.com/wrm0197.html . The construction crews during my electric utility days used to
Kelley: The two-capacitor matching system is probably the Omega match. This matching system is typically used on towers that are longer than 1/4 (electrical) WL. Most of us mere mortals are confined
Mike: You can try split bolt connectors to secure the ends of trimmer string instead of tying. 73 de Gene Smar AD3F _______________________________________________ ___________________________________
Dick: o YMMV - so make the initial wire much longer and fold back along its length (use bronze split bolt nuts) until you achieve the SWR results you want. Don't trim the wire as you go because o Whe
John: Here's what I posted about my own Skyhawk: http://lists.contesting.com/archives//html/Towertalk/2007-10/msg00164.html . One hint - When you assemble the Skyhawk's elements, insert all three pop
Tony: As a potentially cheaper alternative, consider using copper water tubing, like for refrigerator ice cube makers, as the main element of your radial ring. I used #8 soild copper wire, but would
Jim: I'd bypass all other options and go for the phone poles right off the bat. Just be sure they're in the ground deep enough to begin with: minimum five feet depth plus one foot for every ten above
Bob: FWIW: I have my D40 about 11 feet above my Skyhawk which is eerily similar in design to the open sleeve feeds of F12 Yagis. The elements of both antennas are parallel with no adverse effects, i.
Kelly: I'm not sure of what you mean by "small." However, someonse else suggested you look into a Bencher Skyhawk. I have had mine up on my tower since 2001 and have posted several times recommending
Gary: I shunt-feed my tower on 160 and 80M, too, and don't have that problem with the rotator indicator. I'm running 100W. I think it's because I have two solenoid-like coils in the rotator control c