Thanks Phil, I suppose you are right that 15 years isn't bad, but I know it should be possible to do better, because the 9913 I installed with it, is still in good shape. Rob On Apr 22, 2004, at 3:18
Hi All, As Bill (W5WVO) recently put it, "The vast majority of you seem to think the SteppIR yagi is the greatest thing since the discovery of the ionosphere! " At this time, I haven't been able to f
Hi Jim, I'd like to disagree. :) On May 5, 2004, at 2:09 PM, Jim Jarvis wrote: Folks, In brainstorming how to 'make a steppIR cheaper'....you're misleading yourselves. Maybe, maybe not. You don't kno
On May 6, 2004, at 4:38 PM, Joe Subich, K4IK wrote: Figure out how to make the elements of retractable tubing, so when not in use, they collapse down to 3 feet (each side) or whatever. This would red
Hi All, Interesting topic. A few years ago, I tried to obtain a 120' phone pole new, and all the guys I talked to said it had been years since they had seen one even close to that size. One of my men
My email program didn't like the spaces in your URL. Here is a fixed one if anyone else has the same problems I did. http://www.iol.ie/~bravo/Well%20Casing%20Tower.htm Looks interesting. Is that what
On Aug 30, 2004, at 9:46 AM, Tower (K8RI) wrote: Going to less likely The cable could have been pinched if the tower has been raised and lowered or it could have been pulled loosening one of the conn
Hi, I have a THD-7122 (seven sections 122 feet extended) crank up tower and would like to know the recommended procedure for cranking it up and down. Does anyone have any information on that? Thanks,
Hi Bob, I haven't been back to read the posts that directed you that you need 1/2 wavelength of coax to measure the correct VSWR, but it isn't true if you have any loss in your coax. The signal is at
Hi, I'm wondering if there are any antenna experimenters near here who might be interested in going together to purchase a decent sized order of fiberglass poles from MaxGain Systems. The poles are c
Hi, A few years ago I purchased a couple of what I believe are small prop pitch rotors. Now that I have a need for them, I am trying to figure out how to test them. One of them I was able to use some
Hi Everyone, Does anyone have a source for an inexpensive thrust bearing? I have a plate on the top of my tower with a hole through it, and was thinking of putting a thrust bearing on, but the ones I
Thanks everyone for the ideas on thrust bearings. They have been very helpful. 73, Rob, KL7NA -- Rob Frohne, Ph.D., P.E. E.F. Cross School of Engineering Walla Walla College 100 SW 4th Street College
Hi Everyone, I have been advised by one person that if I use a prop pitch rotor, I need to make sure I use a thrust bearing, as the prop pitch wasn't made to support much if any weight. Can anyone gi
Thanks Jim, Gale, et. al., I will have the prop pitch mounted down in the tower about ten feet. The mast will thread through a bearing about ten feet above it that will hold side to side force. I was
Hi All, You guys are giving me such good advice today, that I can't resist another question. I'm considering trying to phase a four element quad at 40 feet on one tower with a four element 20 meter m
Hi Everyone, You have been so helpful with this prop pitch. I have determined that the motor doesn't turn, though the brake engages. I suspect the problem that everyone has posted about previously wh
Hi, I have two Tri-EX THD series towers and have had trouble with them jamming when partially erected. I am thinking of putting a cable from the top section to a pulley on the bottom section so that