Good response, Steve. I'd add one followup comment. If you space the ground rods closer together than twice their length, you run the risk that the lightning energy will flow UP into one or more of t
Nate, It's not clear from your response to Frank that you understood his point. It's not the corrosion of the copper ground rod that's the issue...It's corrosion and subsequent structural failure of
ANSI/EIA/TIA-222-F applies to ALL steel towers, guyed or self supported. The issue is bi-metallic corrosion, not how thick the tower legs are. By the way, the title of this publication is: "Structura
You don't state how thick the wall of the 2" mast is. I have a 2" O.D.x 3/16 " wall chromally mast with a yield strength of 110,000 lbs certified by the vendor. Last fall, I had a licensed tower serv
10 wavelengths is considered the point at which interaction is negligible. Related: Remember, for those who have not lived through sunspots before, on 10 meters, as is often the case when the sunspot
This is a multi-part message in MIME format. --3F5818E611E1 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit If anyone is interested, please send an email directly to me: Bi
Hi Dave, I have a heavy duty AB-105 tower, not the regular duty one you have, but am familiar with it. First of all, I agree with your approach to issue #1. Although, an alternative would be to build
I believe the product is called: Rustoleum Rust Reformer. I've used it successfully on several tower-related and non-tower related projects. Bill, N3RR -- FAQ on WWW: http://www.contesting.com/towert
Gary, That tower hasn't been manufactured in nearly 50 years! "All" of what is left is probably owned by hams and passes from ham to ham upon their Earthly demise. Some AB-105 is available from hams
-- Subject: Re: [TowerTalk] Mods for CC 40-2cd To: <towertalk@contesting.com> Date: Tue, 11 Mar 1997 05:26:08 -0800 From: Bill Hider <n3rr@erols.com> To: jhumet@mhv.net, References: <33263517.7722@mh
Yes, Jim, I'm stacking two 40-2CDs. Upper one is at 134 ft, lower one is at 67 ft. They play like a champ with my BUL switch in the shack!! 73! Bill -- FAQ on WWW: http://www.contesting.com/towertalk
Mike, the boom on the 40-2CD is 22 feet!!! NOT 12 Feet!! Bill, N3RR -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk@contesting.com Administrative requests: towertalk
I made the subject "heat/cold shrink" because I felt it unlikely that many of you knew about the new "cold shrink" available for coax/hardline cable splice waterproofing. Andrew makes such a device,
To: <towertalk@contesting.com> Ed, those "PL-259 like" N connectors are real bad news. They are not 50 Ohms. Look inside the connector. You will see that the "terrain" inside is irregular. They are v
I recommend you bring a copy of PRB-1 with you, so you're on record with it. Bring an attorney who can talk to that document as well. Bill, N3RR -- FAQ on WWW: http://www.contesting.com/towertalkfaq.
Scott, there are more variables than what you mentioned in your message. But, you have all the information and capability to answer your own question as well. The answer to your question can be readi
Mick, this question pops up all to often. Now-a-days, the use of computer modelling takes all of the guess-work and querries like this off the table. Buy EZNEC, or another modelling program and run y
YES, ALL COAX LINES SHOULD BE GROUNDED TO THE TOWER AT THE ANTENNA AND AT THE BASE OF THE TOWER BEFORE THE CABLE GOES INTO THE CONDUIT OR BEFORE IT GOES INTO A JUNCTION BOX. YES, USE FEEDTHROUGHS (OR
"At the time (local) half way between local sunrise and local sunset, the Sun, if shining, will cast a shadow exactly (true) North-South." That's the sentence. Now, to avoid the FLAMES I received las
I don't think so, because the sunrise and sunset times should assume 0 Degrees to the horizon from some local location. Once the sun comes up above local obstructions, it's then visable and casting s