Yes, that's the super-heavy-duty bracket designed for Rohn 25 and 45. The HBU is the heavy-duty bracket for Rohn 25 and 45. The HB25 series are only for Rohn 25. I'm currently in the middle of instal
I'm in the process of putting up my tower (after a 6.5 year wait). Last night, I obtained a 2" Al mast and fitted it in my 25AG3 top section. I'm concerned that the fit is rather snug, and might caus
I'll keep that in mind. I chipped out some galvanizing slag near the set screw holes, but the remainder seems pretty smooth (as hot dip galvanizing goes). All my tests have been with the AG3 and mast
Ooo! An excellent idea. (As if ice were a factor here in GA) Bill Coleman, AA4LR, PP-ASEL Mail: aa4lr@arrl.net Quote: "Not within a thousand years will man ever fly!" -- Wilbur Wright, 1901 List Spon
Today I took out my AG3 top, lashed it up vertically, put the rotator and mast in place, and everything rotated just fine with no binding. I did manage to align the rotator base plate this way. With
I'm steadily working to put up my 44' Rohn 25 bracketed tower. While planning ahead, I ran across something I'm not entirely sure how to handle. I know that you're supposed to route all cables INSIDE
On 7/20/01 9:31 AM, Stan or Patricia Griffiths at w7ni@easystreet.com wrote: I think the problem was that with 6+ feet sticking out one side, and 1+ feet out the other, the mast was just rubbing agai
How about mounting a balun outside, and bringing coax underground / into the building? Not as good as open wire all the way, but better than coax all the way out to the antenna. Bill Coleman, AA4LR,
Rick's 80m yagi is so high, it looks like a 2 element 40m beam from the ground. When lowered, you get an idea how big it is. Huge. The tower with the 80m yagi, and 20m and 10m Eu stacks is a pretty a
That depends. If 30' is as high as you can go, so be it. Practically speaking, 30' is just barely 1/2 wave on 20m. That is about as low as you want to mount a yagi, since the proximity to ground real
The only problem with 1.5" waterpipe or rigid conduit is that it doesn't make a great fit for the mountings designed for 2" masting. I have my R7000 mounted on 1.5" rigid conduit (not to be confused
Depends. Where I used to live in Stone Mountain, the termites were so thick that they ate away a pressure-treated mailbox post in 4 years. I suggest you encase the 2x4 in a couple of bags of concrete
TexasTowers <http://www.texastowers.com> lists Rohn 25G sections for $89. Which top section? A 25AG3 is $109, a 25AG4 is $139. Bill Coleman, AA4LR, PP-ASEL Mail: aa4lr@arrl.net Quote: "Not within a t
Dave, Apparently you haven't followed the origin of W7NI's hardware. Original Rohn Tower bolts are either hot-dip galvanized, or in the case of Rohn 25 bolts, plated. Now, the plated bolts/nuts don't
Three inches on all sides. Concrete isn't so porous that water can infiltrate three inches easily. Bill Coleman, AA4LR, PP-ASEL Mail: aa4lr@arrl.net Quote: "Not within a thousand years will man ever
^^^^^^^^^^^^^^^ This seems to be a catch-phrase for you, Ken. You've used it in several messages. Frankly, I've been a charter member of TowerTalk (virutally) since it's inception, and I've never see
No one likes MEK? Just keep it away from plastics. It's the only thing that will put a dent in certain epoxies.... Bill Coleman, AA4LR, PP-ASEL Mail: aa4lr@arrl.net Quote: "Not within a thousand year
Spacecraft. It is about twice as expensive as 6061-T6. Bill Coleman, AA4LR, PP-ASEL Mail: aa4lr@arrl.net Quote: "Not within a thousand years will man ever fly!" -- Wilbur Wright, 1901 List Sponsor: A
Wouldn't it be better practice to place the pipes so they go through the concrete base and into 4-6" of gravel for drainage? This is the typical practice for Rohn 25/45-type bases using either a base
Rebar is not galvanized. Rebar is a really low-quality steel. But it forms an important part of the foundation, so rebar is important. Without it, concrete isn't that strong, and will prone to crack