If shipping towers, whether used or new, be sure to inquire if machinery + labor is available to load & offload! The contents, of course, are very heavy, and typically the carrier contracts to delive
My condolences. If the base and your concrete foundation is per-spec and in good shape, I'd take the time & effort to look for a Silent Key's estate and try to find something in the Tash/TriEx LM fam
This is true. Also, if you know someone with a mid-sized tractor with front-end loader, the job can be done if carefully thought out, plenty of slings and ham helpers (young strong ones) are availabl
Hi Shawn... I had screw anchors which I think I purchased from Texas Tower. They were probably manufactured by Rohn or some other well-known tower mfgr. IRC they were 4 augers on 4 3/4 (or 1?) rod, a
So the answer, it would seem, is to have any guy anchor (galvanized or not) to not only be embedded in concrete, but in an elevated pier so that the entire guy anchor is 100% above ground soil. If I
SEE CAPS BELOW Wow. I wonder what the source of the corrosion/electrolysis actually was? DISSIMILAR METALS IS THE BASIC ANSWER; THE CHEMISTRY IS MORE COMPLEX, BUT THE FURTHER APART MATERIALS ARE ON T
That is good. How long are sacrificial anodes good for before you have to inspect, maintain, or replace? Costs? Labor? Do they have other unintended consequences? 73 de k0dan --Original Message-- Fro
I am neither an M.E. nor a tower installer, however I worked 30+ years in the land mobile industry. My understanding is that multiple ground anchors are required by manufacturer specs (for very tall,
Hans... In my experience this is not true. I have some photos of my failed galvanized screw anchor which I can send you. The failure was a good 3+ feet below the ground surface, however I expect the
Nope Were your guy anchors grounded with a copper ground rod? _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesti
Hans is right. You need an intermediate metal for washer, lugs , or other hardware. If your installation is only for Field Day, or a few months/years, it probably doesn't matter. If you want your ins
All owls must be above ground potential. de k0dan Is there a North-Seeking Plastic Owl here yet? Hans - N2JFS _______________________________________________ _________________________________________
Could indeed be the cap. Also inspect the rotor control cable (as much of it as you can safely see close-up)...if the cable is 25 years old, there's a good chance the outer jacket is cracked and leak
It depends on what you buy (follow mfgr specs) however if you are going to do a house-bracketed tower, see if you can download the Rohn specs for their Model 25 tower, which, if IRC requires a small
I have a 1970's vintage LM470 which has separate pull-up and pull-down cables for the sections....maybe not 8 for all 4 sections, but certainly more than one long cable. Years ago I got replacement c
It can be found here: http://bama.edebris.com/manuals/tashjian/lm470 --Original Message-- Download the manual from BAMA, it shows how the wire rope is laced. Might be too new a manual for your model
No easy answers here...however the ARRL Handbook, and the ARRL Antenna Book have several excellent chapters on this topic. Interesting reading, which it runs from basic to complex, but the concepts a
Roger: The LM470 manual -DOES- have a schematic of the control box. At least I am 99+% sure it does. Like page 3-6. If not, I have one which I will scan & send to you. I don't think the control circu
Over the years the control boxes at the tower changed somewhat; some versions may not match the current schematic on BAMA. There is nothing in the motor housing...the motor just wants to see AC power
Will ARRL or FCC allow me to sell the services of my plastic owl at a remotely controlled location? It doesn't say so in my study guide. Does the owl have to face north? ;-) 73 k0dan (sorry, couldn't