Sorry for the test post... Steve K8LX _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists.cont
Now figure the leg compression (unguyed) during a strong wind. You will find that it's MUCH greater, and concentrates on the downwind leg(s), and the conclusion is that reasonable guying will invaria
James, OTOH, some things are just...obvious. Otherwise we would feel compelled to pay for new engineering every time we added a dipole to our tower, because the manufacturer didn't specifically say t
Bill In the past I've asked a couple of engineers if they could come with a counter example, and they couldn't, or at least didn't. If you're an engineer, maybe you would like to try.... 73, Steve K8
Well, OK, here was my response to Bill, also off-line. To maintain continuity, it's at the bottom. Steve K8LX Well Bill, I'll defer to your expertise, but in all the years this has been discussed, I'
To be honest, I'm not sure what the question is either :-) Folks seem to be equating self support towers with crankups, and who knows what else... Just to clarify the question in my OWN addled brain
Rick, Another way to characterize a self supporter is to say that they are strong at the top, and EXTREMELY strong at the base.... Of course hams tend to use the very weak ones :-) At any rate, a "re
The best method for rotational resistance is to run double guys up to your "star" bracket. My 190' Rohn 80 has 2 levels of double guys with star brackets and is engineered for four full blown cell si
The most common wire to make ground rings on commercial sites is #2 tinned solid copper. It's typically Cadwelded to the ground rods. Steve K8LX _______________________________________________ ______
For some reason I never think of BX tower when I think of self supporters, but it's designed as one, so I guess we must. I started out with that style tower in the 60s, eventually extended it to 74'
<snip> Jim, BTW, could you clarify that comment a little? I think the peak leg compression (which occurs during strong wind in either the guyed or unguyed state) is lower when guyed (reasonably), and
I took a look at those two, and it's obvious there would be a steep learning curve. I'd like to have one of the custom tower packages, like Tower, RisaTower, or Guymast, but they start around $3k. I
Roger, I want to understand exactly what you're saying here. In a strong wind, would you expect there to be more total compression in the downwind leg with guys attached? I would expect just the oppo
So it's not inevitable then. Complex yes, but the more guys (up to a point) the better I think. On guyed towers, you see a pattern develop after seeing a lot of them. This is really simplified but: 1
Hi Peter, Hey, those are some mighty strong looking tapered towers, but they are not "perfectly" rigid, which is what I should have said.... 73, Steve K8LX ___________________________________________
IOW (and I THINK this is what Roger did) the Philly can be left long initially (past the Big Grip) and held with a Chicago grip, double cam lock, or whatever - even a knot, since you will be trimming
Looks like seven: Flagstaff AZ, Grand Junction CO, Bangor ME, North Platte NE, Las Vegas NV, Rapid City SD, and Jackson WY. Three of those markets had no Ch2 NTSC previously, so there are a total of
Most cables are fine up to about 200' hanging from a kellum or hoisting grip if they are protected from the wind, as they would be in a PVC tube, cellular monopole, or held laterally by crankup tower
Not really. For example, 100' of LMR400 weighs 6.8 lbs. It's tensile strength is 160 lbs. Steve K8LX _______________________________________________ _______________________________________________ To
http://www.scribd.com/doc/9563019/LMR400-COAX I didn't weigh it, but the specs say .068 lbs/ft. Steve K8LX _______________________________________________ ____________________________________________