That's a good point, however I think that it's OK to realize that some technologies have become dated, no matter how excellent the customer support or how excellent the product. Quad antennas are exc
My big fear with a tower such as this is that instead of multiple weak links (ring rotors), where perhaps one antenna bites it, you have one big weak link that would make the whole assembly bite it.
Hi Bob, After 25 years in this game, I would disagree that there's been no change in antenna design. Yes, the fundamentals are inalterable. Folk who have tried to claim such are snake oil salesmen. M
Hi Les, Get yourself over to trylon.com and check out their methods of anchoring freestanding towers to rock. I forget the exact dimension, but I think their rock anchors are 48 inches and they spec
This is all a very good argument for an Alfa-Spid style of controller: mast slips, adjust the controller. Period. No climbing. No pinning. No stripped gears. (At least until the slippage is, I think,
Hi Bob, Cadwelding, once you know some of the tricks, is dead simple. Key things to remember are: 1. Matches or other simple flames will not ignite the material. It's deliberately designed such so th
Hi all, Does a Ham-IV control box work on a Ham-II? Thanks and 73, Kelly ve4xt _______________________________________________ _______________________________________________ TowerTalk mailing list T
Hi all, I don't want to be critical of anyone, but am I getting correctly the sense that installation protocols for R25, if they don't already, should stipulate interim guys at intervals less than 30
full-size 1/4WL radiator. Jerry Sevick may wish to disagree... Actually, he showed in the 1960s that short, loaded verticals are so close in efficiency to full 1/4-wl verticals as to be imperceptibl
The other consideration about undercutting for the pad is whether the concrete will fully form to the shape of the pad. I certainly wouldn't want to be in the hole forcing concrete into the undercut
An interesting tidbit of info: in Manitoba, transmission lines from generating stations to major centres are so long, they run them at DC, because at 60 Hz they'd be... resonant. 73, kelly ve4xt publ
Hi Bob, Since nobody else seems interested in responding seriously to your question.... SteppIR and ZeroFive are correct: depending on the size of the roof (and for most average sized houses, it's fi
If you know you're going to want a 3-el SteppIR, why not buy the 2-el SteppIR with plans to upgrade later? Buying the 2-el and then the 3-el upgrade kit later is going to cost more, but not as much a
Hi Alan, I don't think careening from one extreme to the other helps the discussion at all. There are plenty of sturdy, capable tower installations made from decent used pieces that don't cost an arm
Hi Jim, And even if you had intended to go beyond the wires in trees argument and suggest that it is not necessarily a second mortgage to put up a tower, that would have been OK too, in my book. I do
Keith has put together a pretty good list, and for a Cadillac system at 70 feet, probably the definitive resource. But there remains plenty of hamming fun to be had at less than this, and that doesn'
I remember reading the QST reviews of the Maxcom unit. They trashed it pretty thoroughly. Even included X-ray photos showing the few components that were in the epoxy (resistors, coils) weren't conne
Hi Dick, I'd worry that the backfill would, moreso than the undisturbed earth around it, leech out the water the concrete needs for curing. That would more than erase any benefit from preventing evap
Sevick showed in the 1970s that if proper attention is paid to radials, loading and feedpoint impedance, shortened verticals can work very closely in performance to their full-size counterparts. One
Boy, if a C31XR is a little pistol, I guess we need to redefine what little pistol means... 73, kelly ve4xt -- Original Message -- From: "Andrew Roos" <Andrew.Roos@poynting.co.za> To: <towertalk@cont