I use the holes in the top plate for guys which is why I suggested placing the top guy at the top and the tower is somewhat stronger by doing so. Personally, I drop the top guys when installing anten
Hopefully this product is strong enough. I made an adapter out of 1/2" think aluminum to mount a Create CK-46 on top of a Rohn Tower. My adapter plate sits flat on the tower, rather than above it as
Personally I see no reason for a second bearing and I see a huge headache trying to line up a top bearing, middle bearing and a rotator on something built as unprecise as the Rohn mounting plates. Yo
Why would an additional bearing have anything to do with reduced rotator failure? I could only see it adding to failure due to binding. In order to not have binding all three plate would have to be v
What do you call a large antenna? What does installing one without a crane have to do with multiple thrust bearings? I take it then that you have never experienced the installation of a large stacked
What is not registering is why you are claiming that adding a second bearing reduces rotator failure. What is the theory? If there is such a reduction in rotator failure using this method, Rotators h
How do you keep the antennas from turning in the wind and damaging your coax? John KK9A So why does a rotator want to have that second thrust bearing? I wanted two because when you take the rotor out
There is a lot of information on this subject in the archives. If you don't have any specific problems you may not even need an RF ground. 73, John All: My son, who recently got his license, is looki
Gene, I agree that a second shelf would contain the mast while the rotator is removed, although I am not sure that the mast would flip out of the tower. I just don't see any benefit to having a secon
I'm still curious how extra bearings reduces rotator failure. Anyway to answer your question, I would use the flat top plate. It's strong, the bearing is right at the top and you can easily stand on
Is the aluminum on the rotator side of the mast or the top? Hopefully the Chromemolly is on the bottom. If the 6' piece in the tower is bowing, the 24' sticking out of the tower must really be bowing
I just did a quick archive search and found this: http://lists.contesting.com/_towertalk/1998-12/msg00118.html [TowerTalk] Refurbishing Rohn Bearings from [Jeffrey Okamitsu] [Permanent Link][Original
According to K1VR, it was first posted on towertalk and then printed in the NCJ . http://lists.contesting.com/archives//html/Towertalk/2007-01/msg00421.html Excellent information and originally poste
A short time ago, I had some tower sections regalvanized. They were not in bad shape, but I thought I would recoat them before installing the tower, thinking I would have a tower that looked new agai
Carl is usually very responsive. Try carl@ticgen.com or calling 800-TIC-RING. John KK9A Can someone give me contact information (phone and email) for TIC Gen Director (or whoever is now selling Tic R
I have used Loctite many times on stainless steel hardware and it seems to harden. What do you mean by "it won't cure"? <snip> BTW for those of you who say "Loctite cures due to lack of oxygen" - tha
There is enhanced radiation in the direction of the top loading wire, however it is not worth worrying about. It is about 1db with a 1/4 wl inverted "L" that is 1/8 wl. high. John KK9A G3XAP wrote a
Oops, I should have proof read this! I meant to say that this is some gain (very little) in the "opposite" direction of the loading wire. Could you guys maybe have it reversed? Every time I've modele
Page 24 of the September / October 2007 issue of NCJ shows Andrew, from KC1XX towers, using an extension ladder to reach an antenna element. The ladder is somehow attached to the tower and it leans a
This is only true if you have a feedline without loss. If it is 1.2:1 at the shack it is also 1.2:1 at the antenna. The impedance may be transformed but the swr will not be. 73 Gary K4FMX ___________