Author: sawyers@inav.net (Steven H. Sawyers n0yvy)
Date: Sun, 23 Aug 1998 22:02:00 -0500
I will use either a pier pin or base BOLTED down, but no section in concrete. I have seen too many things go wrong with the poured in place section. Things like freeze splits, and corrosion. One inst
Author: sawyers@inav.net (Steven H. Sawyers n0yvy)
Date: Sun, 23 Aug 1998 23:08:31 -0500
The actual set of formulas used in the EIA standard is: F = qz * Gh * [ Cf*Ae + SUM(Ca * Aa) ] qz = .00256 * Kz * (V^2) Kz = [z/33]^(2/7) 1.0<=Kz<=2.58 Gh = 0.65 + [ 0.60 / (( h/33)^(1/7)) ] 1.00 <=G
Author: sawyers@inav.net (Steven H. Sawyers n0yvy)
Date: Sun, 23 Aug 1998 23:23:28 -0500
I apologize to both you and the web. The book is Cable Structures by Max Irvine and it was published by Dover Books. The paperback version has the ISBN of 0-486-67127-5 It was originally published by
Author: sawyers@inav.net (Steven H. Sawyers n0yvy)
Date: Tue, 25 Aug 1998 21:49:30 -0500
Oops - Sorry. You are correct the v is in MPH! I had spend the night looking at Aerodynamics Books to check your constant and typed the wrong thing!! Need to proof read things better! Glad you persis
Author: sawyers@inav.net (Steven H. Sawyers n0yvy)
Date: Fri, 17 Jul 1998 22:16:59 -0500
I just finished mailing off FAA Form 7460-1 Notice of Proposed Construction or Alteration. So I am somewhat familiar with the process. The local airport has decided to add a new 4000 foot runway and
Author: sawyers@inav.net (Steven H. Sawyers n0yvy)
Date: Mon, 08 Jun 1998 20:24:49 -0500
Assuming the tower is good and not rusty junk, I think a crane will do the job, but it will be a little tricky. If this sounds a little more than you want to handle, then take it down one piece at a
Author: sawyers@inav.net (Steven H. Sawyers n0yvy)
Date: Sat, 02 May 1998 22:22:05 -0500
I always thought one PE stamp beat four building inspectors. At least in Iowa, but then we do tend to be a little more reasonable. Sorry - couldn't resist. :-) Seriously, I would contact your state e
Author: sawyers@inav.net (Steven H. Sawyers n0yvy)
Date: Tue, 26 May 1998 21:52:04 -0500
Sorry, but the safety factor is not 3:1. I wish it was. The EIA-222 standard requires a 2:1 safety factor on the guy wires. I have done comparison calculations and I come up with about the same thing
Author: sawyers@inav.net (Steven H. Sawyers n0yvy)
Date: Wed, 27 May 1998 19:08:20 -0500
Sand can be made to work. The big question is: How high is the water table? If you did a hole for the anchor, will you have to pump it out in the dry season? How about in the wet season? Steve -- FAQ
Author: sawyers@inav.net (Steven H. Sawyers n0yvy)
Date: Wed, 27 May 1998 19:55:46 -0500
Aren't helpful neighbors wonderful! Here are my off the wall shots: In this country anyone can sue for almost anything and they do. Their legal expense versus yours - but if they file, get a lawyer a
Author: sawyers@inav.net (Steven H. Sawyers n0yvy)
Date: Wed, 27 May 1998 20:01:47 -0500
pattern test somewhat problematic. :-) An interesting side note - The IEEE Antennas and Propagation Journal recently had an article on Near Vertical Incidence Signals (NVIS) for HF using a NEC model
Author: sawyers@inav.net (Steven H. Sawyers n0yvy)
Date: Sun, 19 Apr 1998 21:24:44 -0500
I have had this problem before (no formula's). It is because the Equation Editor in MS Word is not installed by default. They are in the .wp file. They are also in the .pdf file. and that is a much m
Author: sawyers@inav.net (Steven H. Sawyers n0yvy)
Date: Sun, 19 Apr 1998 23:02:02 -0500
My apologies to the net for the wasted bandwidth. Unfortunately, my got resorted and I lost track of where I was. I didn't realize how old this was when I replied to it. de n0yvy steve and available
Author: sawyers@inav.net (Steven H. Sawyers n0yvy)
Date: Sat, 14 Mar 1998 00:13:08 -0600
I am going to try to do this and keep the math simple. Maximum loads are different in a 3 guy and a 4 guy system. In a 4 guy system the worst case is when the wind is straight down the guy wire. Then
I have yet to see any amatuer tower installation look even close to any I have seen before. Everyone has different antenna's and different guying restrictions. Elevated guys, miss the house and garag
Author: sawyers@inav.net (Steven H. Sawyers n0yvy)
Date: Sun, 22 Feb 1998 11:35:47 -0600
I appreciate the URL. Looks very interesting for North America. Does anyone know of something similar for other continents? How about any USB and LSB broadcast stations? I was told once of a German
I use a thermal stripper to strip the jacket and dielectric. Usually have to smooth the outside of the jacket with some sand paper. I also only use "N" connectors, but the trick is the thermal wire s
Simple definition: Controlled is inside your property line. Uncontrolled is outside your property. de n0yvy steve -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk@con
Controlled is inside your property line. Uncontrolled is outside your property line. de n0yvy steve -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk@contesting.com Ad
I went to the OET Bulletines On-line web page at: http://www.fcc.gov/oet/info/documents/bulletins/#65 and got the WP and PDF versions. de n0yvy steve -- FAQ on WWW: http://www.contesting.com/towertal