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121. Re: [TowerTalk] Phillistran - Defective ? (score: 1): Author: "Roger K8RI on Tower" <k8ri-tower@charter.net>; Date: Sun, 24 Apr 2005 17:48:44 -0400; First, I'd give them a call and ask. If you have the data sheet for a the BigGrips they should list a size range for which each model will work satisfactorily. Personally, I doubt the hundreth of an; /archives//html/Towertalk/2005-04/msg00669.html (9,385 bytes)
122. Re: [TowerTalk] Yahoo and Spam! Was: New Ham Automation reflector (score: 1): Author: "Roger K8RI on Tower" <k8ri-tower@charter.net>; Date: Mon, 25 Apr 2005 20:13:35 -0400; I know this is drifting OT, but about 20 to 30% of the spam I receive is addressed to the address I use here on Tower Talk. I use this address for no other purpose than the reflector and to respond t; /archives//html/Towertalk/2005-04/msg00703.html (11,531 bytes)
123. Re: [TowerTalk] Tower height questions (score: 1): Author: "Roger K8RI on Tower" <k8ri-tower@charter.net>; Date: Wed, 27 Apr 2005 23:20:01 -0400; I'm at 97 to the top of the tower out here in the flat lands and use three sets of Philystrand 6600# test. http://www.rogerhalstead.com/ham_files/Tower26.htm Each guy anchor weighs around 17,000# whi; /archives//html/Towertalk/2005-04/msg00744.html (9,173 bytes)
124. Re: [TowerTalk] on guying towers (score: 1): Author: "Roger K8RI on Tower" <k8ri-tower@charter.net>; Date: Thu, 28 Apr 2005 16:56:11 -0400; We, or most of us, do use rebar, but it is used to reinforce the concrete and the ROHN catalog has instructions on how to arrange (lengths and bends to make) the rebar. I'm a firm believer that they; /archives//html/Towertalk/2005-04/msg00750.html (9,586 bytes)
125. Re: [TowerTalk] Mystery tribander (score: 1): Author: "Roger K8RI on Tower" <k8ri-tower@charter.net>; Date: Fri, 29 Apr 2005 02:20:37 -0400; Or it could be a Cushcraft ATB-34. How is the driven element attached to the boom? If it fits into a cylindrical phenolic insulator it is *probably* the ATB34. They normally used a balum but direct c; /archives//html/Towertalk/2005-04/msg00766.html (9,558 bytes)
126. Re: [TowerTalk] Mystery tribander (score: 1): Author: "Roger K8RI on Tower" <k8ri-tower@charter.net>; Date: Fri, 29 Apr 2005 04:24:05 -0400; Oops! I added one too many elements, but I believe most of the manufacturers had the same sort of arrangement with two trapped elements and a seperate reflector for 10. ______________________________; /archives//html/Towertalk/2005-04/msg00767.html (11,305 bytes)
127. Re: [TowerTalk] Mystery Tribander 2 (score: 1): Author: "Roger K8RI on Tower" <k8ri-tower@charter.net>; Date: Fri, 29 Apr 2005 14:53:09 -0400; A reflector with two traps (one on each side) is consistent with the seperate 10 meter reflector, but that three traps started me thinking last night as well. I don't know of any older antennas that; /archives//html/Towertalk/2005-04/msg00772.html (12,437 bytes)
128. Re: [TowerTalk] GUY WIRE TENSION (score: 1): Author: "Roger K8RI on Tower" <k8ri-tower@charter.net>; Date: Sat, 30 Apr 2005 21:13:31 -0400; As others have already said, it depends on the size of the guy wire. The size of the guy wire depends on the tower. On a 45G I use 4400 and 6600# test Philystrand . Use the ROHN tower guide to determ; /archives//html/Towertalk/2005-04/msg00812.html (9,844 bytes)
129. Re: [TowerTalk] polyrod (score: 1): Author: "Roger K8RI on Tower" <k8ri-tower@charter.net>; Date: Sat, 30 Apr 2005 21:29:29 -0400; Why not just use one of the Kevlar cables such as Phylistran, or the one AES sells just called Kevlar guy line? Nothing is perfect, but so far I like the light weight and easy handeling of the Kevlar; /archives//html/Towertalk/2005-04/msg00814.html (8,720 bytes)
130. Re: [TowerTalk] ROHN LOAD TABLES (score: 1): Author: "Roger K8RI on Tower" <k8ri-tower@charter.net>; Date: Sat, 30 Apr 2005 22:31:12 -0400; I think http://www.rohnnet.com/ROHNNET/rohnnet2004/html2004/index.html will do it for you. It may go to the old address before forwarding. It I think it has everything you'll want to ask. Roger Halst; /archives//html/Towertalk/2005-04/msg00817.html (8,569 bytes)
131. Re: [TowerTalk] polyrod (score: 1): Author: "Roger K8RI on Tower" <k8ri-tower@charter.net>; Date: Sun, 1 May 2005 01:31:52 -0400; I purchased the Phillystran 3 or 4 years ago (give or take) and it wasn't that expensive. 50 some cents a foot for the 4400# test and I don't seem to find the invoice for the 6600#, but as I recall i; /archives//html/Towertalk/2005-05/msg00000.html (11,699 bytes)
132. Re: [TowerTalk] polyrod (score: 1): Author: "Roger K8RI on Tower" <k8ri-tower@charter.net>; Date: Sun, 1 May 2005 19:01:06 -0400; <snip> Having spent a lot of time with fiberglass the last few years while building an airplane. This is an aeroplane capable of aerobatics and I've flown one close to 350 MPH while pulling 3 1/2 Gs; /archives//html/Towertalk/2005-05/msg00016.html (13,933 bytes)
133. Re: [TowerTalk] polyrod (score: 1): Author: "Roger K8RI on Tower" <k8ri-tower@charter.net>; Date: Mon, 2 May 2005 19:20:37 -0400; Agreed The summer sun on an unventelated, metal shed may create temperatures beyong the those necessary for softening the resin (Vinyl Ester, or epoxy). A fiberglass airplane with a colored paint jo; /archives//html/Towertalk/2005-05/msg00034.html (11,592 bytes)
134. Re: [TowerTalk] polyrod (score: 1): Author: "Roger K8RI on Tower" <k8ri-tower@charter.net>; Date: Mon, 2 May 2005 21:17:39 -0400; Any dark color should be avoided with fiberglass and resin (epoxy, or vinyl Ester) Vinly Ester resin has a bit higher critical temperature after cure and it has a much lower viscosity than epoxy whi; /archives//html/Towertalk/2005-05/msg00041.html (19,043 bytes)
135. Re: [TowerTalk] polyrod (score: 1): Author: "Roger K8RI on Tower" <k8ri-tower@charter.net>; Date: Mon, 2 May 2005 23:35:23 -0400; Just as a point of interest on color and heat. In a glass covered solar heater using Forest Green as the color on the heating element, if the water flow stops, I believe the resting temperature of th; /archives//html/Towertalk/2005-05/msg00045.html (9,467 bytes)
136. Re: [TowerTalk] polyrod (score: 1): Author: "Roger K8RI on Tower" <k8ri-tower@charter.net>; Date: Tue, 3 May 2005 02:04:35 -0400; One could think of an object here on Earth as an antenna receiving energy from the sun. Since the sun is transmitting about 4 × 10**26 watts, it is not difficult to understand why that Al plate; /archives//html/Towertalk/2005-05/msg00049.html (11,973 bytes)
137. Re: [TowerTalk] Polyphaser Part 098-1013G-A (score: 1): Author: "Roger K8RI on Tower" <k8ri-tower@charter.net>; Date: Wed, 4 May 2005 04:08:32 -0400; There should be some numbers on the unit. About your only option for "custom" is to call the company and they many not even be able to tell. Roger Halstead (K8RI and ARRL 40 year Life Member) N833R -; /archives//html/Towertalk/2005-05/msg00081.html (8,484 bytes)
138. Re: [TowerTalk] Bird loading and elements (score: 1): Author: "Roger K8RI on Tower" <k8ri-tower@charter.net>; Date: Wed, 4 May 2005 13:21:04 -0400; What kind of birds are they? This reminds me, I was going to put up a photo of my antenna system showing a group of Cormorants using it as a wayover on their trip South. Cormorants are *big* birds. E; /archives//html/Towertalk/2005-05/msg00099.html (12,432 bytes)
139. Re: [TowerTalk] suspicious e-mails (score: 1): Author: "Roger K8RI on Tower" <k8ri-tower@charter.net>; Date: Wed, 4 May 2005 13:26:46 -0400; Virus checker or not... When you receive an unexpected e-mail with an atachment and particularly an exe, just delete it. If it comes from someone you know, send them an e-mail asking if they really s; /archives//html/Towertalk/2005-05/msg00101.html (8,059 bytes)
140. Re: [TowerTalk] Taking Down TV Towers (score: 1): Author: "Roger K8RI on Tower" <k8ri-tower@charter.net>; Date: Fri, 6 May 2005 17:00:55 -0400; I used to do a lot of smaller tower work and in my younger years even installed TV antennas as a sideline, but we finally got down to the point where about the only jobs were high pitched roofs on t; /archives//html/Towertalk/2005-05/msg00147.html (13,770 bytes)

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