I have a 203BA That Rattled. It turned out to be the the hair-pin attachment on the boom. It loosened, and the hair-pin wire rattled against the boom. Good luck Bob, W5LT
I have to add my two cents worth: A manufacturers' base design is usually based on "standard soil conditions", which is something like 2000 lbs/sq ft if memory serves. If the local conditions are low
Director - Driven = 89.5 " Driven - Reflector = 102.5" I think the SteppIR is a BIG step in the right direction. As far as tuning goes, it is a no commpromise design. You can have a resonant antenna
I note that in the latest SteppIR (Fluidmotion) ad (Oct QST, p. 154), they clearly state the (modeled) performance. The lower F/R values at the less than optimum spacing of the higher frequency bands
It is my understanding that Andrew was the driving force that created the Rev F update to EIA/TIA-222. Many towers designed to earlier revisions failed when they weren't supposed to. Also, the windzo
Troy, et al: Regarding a free standing tower, you might check out www.heightstowers.com. They make a very nice series of aluminum towers, complete with engineering specs, and a Fold-over kit that mak
HI: Anyone out there had first hand experience with both of these units? I have read the reviews and still cannot make up my mind. I do not need the UHF feature of the MFJ-269. It seems that the AEA
I have recently put together a 2 element triband quad. 20 & 15 M work good, with a under 2.0:1 over full band (<1.4 over most). 10m VSWR is unacceptably high (3:1 or so over full band. I have checked
Nathan et al: I have had two Heights Towers, one for over 30 years. I just took the old one down and replaced it with a new one. The old design, which is similar to Universal, used relatively thin wa
Hello All: Aluminum is a appropriate material to use for many purposes, including masts, towers, airplanes. The suitability for a given purpose is controlled by the DESIGN, not the material. I have j
Hello: Speaking of non-traditional antennas (or maybe more accurately: novel designs): Check out the tunable yagi at www.fluidmotion.ws. This is by far the best idea I have seen for an multi band yag
My experience says the best all round antenna wire (if you can find and afford it)...is stranded phosphor-bronze. We used it at Collins Radio for (very long) trailing wire antennas. It is exceptional
I need to obtain a mounting bolt drill template for a TailTwister. I bought a rebuilt one from Norm's Service, and the manual did not include the template. The tower mounting shelf is for the 4 bolt
Hi All: I could not resist a few comments on the aluminum fatigue question. My Reference is "Aluminum Structures" by Kissell & Ferry, which is an understandable design book based on the Aluminum Asso
Hello: I am looking for a source for high strength, galvanized 1" anchor bolts. I have seen various sources for HS bolts/rod (plain) and galvanized standard steel bolts/rods; but not both in combinat
A simplified mast trade-off study I thought I would make a small contribution to the famous aluminum vs steel discussion. In the same vein as Kurt, NI6W, put forth earlier, I propose a 'Figure of mer
Bill: I have a Heights tower that I have had down only once in its 30 yr life. Had a problem then and wound up damaging some welds trying to part it. Since then I have thought many times about how to
I am planning to re-work (enlarge) my concrete base to support a greater overturning moment for a self-supporting tower. I have been looking at a lot of tower base designs trying to figure out how de
Hi Charlie: I have been looking at a similar problem for my rotatable 40M dipole. I want to have a resonant 30M dipole (about 48ft), then switch it to center loaded 40M (via relay). I have looked at