Mail Archive Search: <+from:W8JI@contesting.com>

Results:

References: [ +from:W8JI@contesting.com: 1524 ]

Total 1524 documents matching your query.

181. [TowerTalk] Color code coax lines? (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Thu, 13 Dec 2001 21:28:45 -0500; I second that. My Scotch colored tapes are outside in the GA sun, and have been OK for a few years now. 73, Tom W8JI W8JI@contesting.com List Sponsored by AN Wireless: AN Wireless handles Rohn tower; /archives//html/Towertalk/2001-12/msg00344.html (8,934 bytes)
182. [TowerTalk] Brighten up :) (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Fri, 14 Dec 2001 22:09:25 -0500; I don't think it is necessary or proper to get on an antenna and tower reflector and publicly insult people. I can't understand why stuff like this is tolerated, and I hope that kind of trash is que; /archives//html/Towertalk/2001-12/msg00364.html (7,813 bytes)
183. [TowerTalk] Hink and Kinks (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Mon, 17 Dec 2001 13:28:56 -0500; Re: Add Safety and Comfort Jan QST page 67 This seems like a death wish! I can't imagine standing on a rubber hose that was slit and installed over a tower rung....even if it is RTVed in place!! All; /archives//html/Towertalk/2001-12/msg00382.html (8,320 bytes)
184. [TowerTalk] Hink and Kinks (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Mon, 17 Dec 2001 21:48:41 -0500; I hate to bring this up, but the same bolt-through -the-mast hint and the rubber-hose-on-the-tower-cross-member hinter also suggested mounting a rotor with rubber bumbers to eliminate "shock" when th; /archives//html/Towertalk/2001-12/msg00399.html (9,190 bytes)
185. [TowerTalk] Hink and Kinks (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Tue, 18 Dec 2001 19:29:11 -0500; I can understand some sort of torque damper in the mast, if the system is designed so poorly or marginally that the rotor gears can just barely handle the load or if the are sloppy and bang back and; /archives//html/Towertalk/2001-12/msg00417.html (9,851 bytes)
186. [TowerTalk] 9913 Reliability (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Wed, 19 Dec 2001 11:38:02 -0500; You would NEVER get away with "sealing" 9913 in GA and keeping water out. It probably is fine in Arizona, however. The only way I can think of the be safe in a humid climate is to flood the first fe; /archives//html/Towertalk/2001-12/msg00438.html (9,753 bytes)
187. [TowerTalk] Perpetum Mobile (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Wed, 19 Dec 2001 11:38:02 -0500; Right you are Bill. It is a silly argument, unless you are running a broadband pulse or video system and a feedline that reaches into the next county at HF. 73, Tom W8JI W8JI@contesting.com AN Wirel; /archives//html/Towertalk/2001-12/msg00439.html (8,308 bytes)
188. [TowerTalk] 9913 Reliability (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Wed, 19 Dec 2001 23:17:58 -0500; Think of all those people at broadcast and CATV installations who pressurize their air core cables, when all they need to do is seal them! 73, Tom W8JI W8JI@contesting.com AN Wireless Self Supportin; /archives//html/Towertalk/2001-12/msg00448.html (9,032 bytes)
189. [TowerTalk] 9913 Reliability (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Thu, 20 Dec 2001 09:19:41 -0500; Anyone who has worked with CATV or BC air dielectric cables KNOWS how well the connectors are constructed. They have "O" ring seals, carefully mated and machined surfaces, and solid metal outer wall; /archives//html/Towertalk/2001-12/msg00454.html (11,180 bytes)
190. [TowerTalk] 9913 Reliability (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Thu, 20 Dec 2001 19:40:41 -0500; Hi Yuri, I hate to repeat stuff....so I won't. Read my post again. When did you have Rhombics? What type yagis did you have and to compare them with? How many days did you A-B test the antennas? What; /archives//html/Towertalk/2001-12/msg00470.html (9,044 bytes)
191. [TowerTalk] 9913 Reliability (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Thu, 20 Dec 2001 19:40:41 -0500; .......lack of a large volume of air that expands and contacts, causing the cable to breath a large volume of air from the ends as temperature changes. I'd wager there is more air volume in one foot; /archives//html/Towertalk/2001-12/msg00471.html (9,070 bytes)
192. [TowerTalk] Relays (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Fri, 21 Dec 2001 09:36:38 -0500; Hi Dick, I didn't have a chance to answer the original question, but let me give a general reply about relays...since it will apply to ANY amplifier and ANY antenna switch and be useful to anyone de; /archives//html/Towertalk/2001-12/msg00481.html (10,338 bytes)
193. [TowerTalk] Decoding BCD with passive circuit (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Fri, 21 Dec 2001 20:29:39 -0500; If you encode with diodes, you can use a conventional one-of-eight switch. Without diodes or some other conversion matrix, you need a special switch or a multiple pole multiple position switch and a; /archives//html/Towertalk/2001-12/msg00503.html (10,421 bytes)
194. [TowerTalk] Vertical on 80 (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Sat, 22 Dec 2001 20:06:02 -0500; I'm still trying to decide what to do for an 80-meter vertical antenna also, so I also would appreciate seeing a discussion of options for 70 foot verticals. What about chain link fence toprail? How; /archives//html/Towertalk/2001-12/msg00510.html (8,439 bytes)
195. [TowerTalk] Decoding BCD with passive circuit (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Sun, 23 Dec 2001 21:37:27 -0500; Right you are Pete. Anyone can go to databooks or notebooks and copy 3-to-8 line decoder systems. (Just like anyone can copy Motorola's schematic of a MRF-150 amp, remove Motorola's name from the sc; /archives//html/Towertalk/2001-12/msg00543.html (10,096 bytes)
196. [TowerTalk] Binocular Cores vs Toroidal Cores (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Fri, 30 Nov 2001 20:50:50 -0500; Binocular cores are better in broadband applications because more copper is INSIDE the core window where it adds to "useful" impedance. The length of copper hanging outside the core, which mostly co; /archives//html/Towertalk/2001-11/msg00001.html (9,612 bytes)
197. [TowerTalk] 4 Square (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Thu, 1 Nov 2001 22:28:33 -0500; There is another advantage you missed. When the line is 1/4 wl or a multiple of 1/4wl long, the phase shift in the line is constant regardless of load impedance. So you not only, if the lines are fe; /archives//html/Towertalk/2001-11/msg00025.html (8,948 bytes)
198. [TowerTalk] 4 Square question (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Thu, 1 Nov 2001 22:28:33 -0500; OK if it's an odd multiple of 1/4 wl, and assuming the phasing system is designed for the impedances presented by 75 ohm cables and the various impedances from each element. I'm surprised it works "; /archives//html/Towertalk/2001-11/msg00026.html (9,462 bytes)
199. [TowerTalk] Powerline noise-Timewave ANC-4 (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Fri, 2 Nov 2001 09:57:11 -0500; The ANC4 as well as the MFJ1025 noise canceller might work. These units are really variable phase shift networks with amplitude controls and a combiner. What they do is combine the signals from two; /archives//html/Towertalk/2001-11/msg00032.html (8,469 bytes)
200. [TowerTalk] decoupling (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Sun, 4 Nov 2001 19:25:05 -0500; You may not need a choke at each dipole, it all depends on many things. I use them just to be safe, because I like my antenna to do all the radiating! Yep, that's mostly an urban myth! The only way; /archives//html/Towertalk/2001-11/msg00083.html (7,978 bytes)

Current List: 181 - 200
Page: [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20]