Although it's perfectly feasible to splice guy wires, seeing it on a commercial tower might make one wonder about the existence of a PLAN, and hence the competence of the installers. AFAIK, the only
On the ground near Detroit. Good shape - was up for around 12 years. If interested, e-mail me. -- Steve K8LX List Sponsor: Champion Radio Products - We'll be at the Dayton Hamvention with all of our
OTOH, if YOU own the tower, you can retain much greater control. Here in Michigan, rental rates are high enough that a brand new commercial tower - say 300' of Rohn 80 professionally installed - will
This rotator sounds suspiciously like the old Telrex models - basically a reversable AC motor driving a double worm gear reduction unit with chain drive to the mast. I also junked the 400 hz selsyns
IME 135 mhz will get you fairly close, but to find the exact pole and be certain of it you need to go up to 500 mhz. A tunable AM radio that covers 70 mhz - 500 mhz, and a small broadband UHF/VHF TV
Rotational stress will work harden aluminum more than you might guess. Many years ago I noticed my 3el 40 freewheeling. I climbed the tower expecting to bring down the rotator, but when I got up ther
A heavy duty tilt mount can be made from two pieces of steel channel, four bolts & nuts, & two u-bolts. Exact dimensions depend on antenna and boom size of course. The channel should have deep non ta
I agree Yuri. This method was used very successfully on a local 120' Rohn 45. Since the new concrete won't bond to the old, and it is likely that there will be unseen corrosion happening at the junct
Exactly my experience. Every commercial and home brew yagi I ever had fluttered in the breeze - most survived, but after just a few broken element tips, one quickly decides to stamp out the problem w
There is an easy way for one person to uncoil this stuff if you plan on cutting it up immediately into measured lengths. Lay the coil flat on the ground 15' or 20' from a tower. Take a 18" or 24" pie
I use 3/16" dacron rope, wrapped twice around the messenger cable to keep it in place, and then tied so that the cables hang 3" or 4" below the messenger cable. The dacron rope hangers are spaced app
The thing that saves our undersized, overrated, pinned rotators - at least on Rohn 25 & 45 style towers - is the twisting of the tower itself, which is VERY substantial. Anyone not convinced of this
You are right - the hole in the mast gradually wears bigger, and the pin wears out. What we did was to grind the shaft down flat around the hole on each side, from the top of the shaft almost to the
Non-detergent single-duty oil is often specified in applications where the oil is rarely changed. My guess is that it is a more stable product. It can be found at most auto supply stores. I use 80/90
Yep, this method yields perfectly acceptable results. I usually hold a tape measure across the tower face I'm looking through, to facilitate lining up the CENTER of the face with the opposite leg. --
Chris - I'm pretty sure that the construction of this cable is similar to other CATV cable - copper clad solid steel center conductor, poly dielectric, shield of aluminum braid over aluminum foil. Si
No. The best idea is to not install these stacked monstrosities which can be nightmares to service. Install a taller tower, put a single large beam at the top which can be turned by a rotator in the
Thanks! Hey, great idea - And, IMO, a poor choice in many cases; when cost, ease of service, flexibility, and effectiveness are considered. Sorry to go off on the tangent though - of course, if one M
1/2" jacketed runs around .35/ft. plus shipping, and reels average 4800'. Telewire (now part of Antec) is a good supplier. I'm not sure if they sell to non-accounts; I'd be happy to have some dropped