There is no FAA reg limit to 200 ft. It's just that if it is over 200 ft. (or within so many miles of an airport) then FAA approval is also required. To my knowledge there is no cap on tower height.
Personally, I use 1/2 or 5/16 braided marine line (rope on land) used on sailboats for hoisting and trimming sails. From my boating experience I know it'll take a lot of load. A little expensive, but
Please 'splain to me why coax shields should be grounded at the top of the tower in addition to at the bottom. I understand at the bottom, to shunt the voltage to the tower and its grounding grid, bu
IMHO, the sloper should do OK for 80 & 40 but I'd wouldn't waste my time with it for 160. Better bet would be to shunt feed the tower for 160. You'll need that vertically polarized signal to work DX
Just some new info. I was browsing through my new Grainger catalog came across the following. One could probably order it via Grainger.com. Kopr Shield (copper based) 1/2 # can PN 3LP03 1.0 # can PN
Some may wonder, "How do I secure the ladder in the first place?" Here at the plant, and per OSHA's Fall Protection standards, we require a second person to stabalize the lower portion of the ladder
Two or three layers of Scotch 33+ or 88 electrical tape. (33 is 7 mils thick and 88 is 8.5 mils) It's the best on the market; we all shouldn't use anything else. One can also use Scotch Linerless Rub
Use Noalox for aluminum joints. Grainger has "Alumashield" Use Kopr-shield for copper joints; available at Grainger also. "Never-Seize" is to be used on threaded joints to prevent galling and to aid
The Copper paste you're talking about is called "Kopr-Shield" by Thomas & Betts. It's available at Grainger. Look for it at www.grainger.com I use it for all my copper to copper connections. It's con
I think the RF Grease you're talking about is called "Stuf", dielectric water proofing filler by Cross Devices. I've just received some from Cable Xperts at www.cablexperts.com I've never used it so
I put up a KT36XA with a Ham IV rotator last fall and a week later we were hit with 60 mph gusty winds for over a day. During that period I had three of the bottom bolts rotate out of the rotator bot
Mike, I'm not sure about the effectiveness of the second bearing. It would lessen any sideways forces on the rotator but it would not reduce any twisting forces that are transmitted from the mast to
As an experienced mariner, I can attest that St. Elmo's fire is indeed a real phenomena. We have seen is quite regularly dancing at the top of the sailboat's mast while out in stormy type weather in
I do two things for mine. First I install a DC blocking capacitor, 0.01 ceramic disk rated at kV, in series on the 50 ohm signal or coax side. I've never had any problems with the transformer itself.
One cannot just simply use their VOM to measure resistance of an earthen grounding system. Before I start let me say that the following statements are what I've learned as a Chemical Plant Engineer (