I offer my condolences to Radio Arcala, but I have a question about that explanation: shouldn't the engineering of the tower system have accounted for the possible failure of a windload-mitigation sy
Hi George, We know that from the explanation on the Arcala website. Doesn't answer the question, however. You shouldn't design a tower system such that the difference between maximum and minimum wind
Virtually every reference on Google searches to the Optimized Wideband Antenna refers to WA3FET as the inventor. None refers to N6BT. Most also co-credit K3LR for the OWA. You might be able to outfox
Dexpan also specifies a method for cracking concrete even when there is no to little room for expansion. It just means drilling more holes. But since each hole has to be 80-90% of the depth, not sure
Considering 55G is only rated for 6.5 sq.ft at 50 feet self-supporting (70 MPH), 1.5 sq.ft (80 MPH) and not rated for anything at 90 MPH, not sure I see the point, either. Lots of good self-supportin
The 43-foot vertical: better antennas through marketing... _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.
Most of what eHam calls 'reviews' are pretty meaningless. Either:1. The person is just so enamoured of their purchase decision they can't see any flaws,2. The person feels their results prove the pro
What about pinning antennas to mast (so they remain aligned to one another), NOT pinning mast to rotator (so a really bad wind doesn't destroy your rotator) and using a rotator without physical stops
Is there any reason why replicating the coil at the base of a Butternut HF9V wouldn't work? A few feet of enameled copper wire, about a one-inch form (discarded), and you're done. IIRC, you can downl
Not quite. A dummy load presents a 50-ohm non-reactive load. A resonant quarter-wave monopole over a decent ground might have an impedance of about 12 ohms. You can probably play with the length of t
May not have been the best example, but the point is that depending on the antenna, resonance and 50 ohms do not always coincide and that some form of matching is required. The lower impedances may h
In Sept. 2010, W1ZR wrote not a review, but an unflattering analysis of terminated folded dipoles based on his analyses and those of VE2CV. It's on the QST archives. Basically, the caveat is understa
It's always seemed to me that MFJ was a bit of a crap shoot. You either get something reliable and it serves you well or you get a piece of mighty fine junk and you chalk it up to a momentary lapse o
Hi all, Anyone have any suggestions for subs for the stubs? Wade Antenna changed the leg profile slightly, so new ones, apparently, don't work, and I'm having trouble locating stubs with the old prof
Hi all, Iım not seeing any evidence of my posts going through, so if this is a duplicate, please forgive. Need base stubs, or a suitable MacGyver, for a DMX48. This is a freestanding tower similar to
Hi Bill, At six feet, your radials are still coupling to the Earth and thus being detuned. Which is why adjusting your radiator has a greater effect. Can't dismiss also the odds of common-mode curren
Hi all, I have an old Mosley tribander that I got years ago. Any key signs to look for to know if itıs the high-power capable version or a Junior? Thanks Kelly ve4xt _________________________________
Use larger bolts? Just sayin' 73, Kelly Ve4xt Sent from my iPad _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contes
Just trying to help. It seems you have only a few choices, some which may be unpalatable.. 1) use larger bolts to fit the holes and find a way to make them work. (Enlarge the mating holes on the base
I'm curious, Rick, if your engineer addressed this question: to what extent does the warning to not have a fixed base on a guyed tower (use a pier pin instead) apply to the question of guying a self-