What I'm looking at is a self-supporting tower: 4-section 55ft mounted on a 4ft "stand"; it tilts over at that point. They tell me 20-30min by hand, but I'll probably get the electric winch option fo
I asked earlier about crank-ups in general and "Heights" aluminum ones in particular. Since then I have had extensive email correspondence (and a long telephone conversation) with a person who sells
It looks as though his horizontal members are each 4 separate bars tied at the corners rather than being a single bar formed into a square wrapped around the vertical bars and (if I am understanding
Is it OK (i.e., feasible, safe) to start tilting over a UST tilt-over crank-up with the tower still somewhat extended (e.g., an HDX-555 still 10ft above its lowest position) -- and also to extend it
I had private emails that also warned against doing this. The problem will be solved by removing the tree, which my brother-in-law (originally trained as a forester) tells me is potentially dangerous
Did you consider the Polyphaser grounding kits? AFAICS from the literature, you strip off the outer jacket, clamp one end of the copper strip around the exposed braid, then seal the whole thing up an
All basically the same except for the metal to which they are designed to connect at each end: http://www.polyphaser.com/kommerce_productdetail.aspx?item=UNI-KIT-2TC http://www.polyphaser.com/kommerc
And I recall a photograph in an old chemistry textbook showing Thermite (TM?) being used to repair damaged tram/streetcar tracks _in situ_. 73 Alan NV8A ______________________________________________
But if your munisipality requires *you* to comply with the NEC, and if your insurance co. won't pay out if your house burns down because they allege that *you* did not follow the NEC, it may not do y
Anybody have a US Tower HDX-series installed in W. Michigan? I have an invitation to go look at one about 3 hours away, but if there's one closer at hand . . . I'm in Zeeland (between Holland and Gra
Maybe I have misunderstood how the Polyphaser clamps are intended to be used, but if I pass the copper strip between the bolts and around one side of the nominally 5/8" ground rod (actually approx. 1
In a previous existence I worked as a lowly underling in civil engineering laboratories and on construction sites. I am sure that the concrete forms were made of plywood with a very smooth -- almost
My understanding is that -- in the US, at least -- the specified strength of concrete is achieved only after 28 days. What percentage it would have achieved after two days, a week, two weeks, etc., I
Could anyone truly *guarantee* that the top surface of the foundation is sufficiently level to elimate the need for the leveling nuts? I think I would want to use the leveling nuts (with non-shrinkin
Perhaps somewhere in my collection of clippings I still have the article I found many years ago in the reputable UK _Wireless World_ publication (which has since changed its name, I think). I don't r
I bought on clearance from HRO a few years ago a length of LMR600 complete with connectors. Th only problem was that when I cut it to install a lightning protection device, the new connectors cost an
So if you can't afford to put up a beam on a properly engineered tower, don't put put up a beam. Don't put up used rusty stuff using half as much concrete and a quarter as much rebar as the manufactu
Jim said that there are people who cannot afford to put a beam on a properly engineered tower, implying that if you can't afford to put one on a properly engineered tower, it's OK to put one a tower
I have APC UPS units of various sizes (biggest is a Back-UPS Pro 1100) for our computers and DirecTiVos). I've never seen any cycle as you describe, but I've never tried feeding them from a generator
But shouldn't the engineer's design of the foundation take that into account? Alan NV8A _______________________________________________ _______________________________________________ TowerTalk maili