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1. [TowerTalk] Broadband over Power Line Video (score: 1): Author: na4m@arrl.net (Phil Duff); Date: Thu Aug 7 13:57:36 2003; To: <towertalk@contesting.com> How true..proponents of BPL tout that it will bring internet access to rural areas. I heard recently that BPL needs "repeaters" every 200 meters or so. The cable TV/br; /archives//html/Towertalk/2003-08/msg00229.html (8,811 bytes)
2. [TowerTalk] info needed for th6dxx (score: 1): Author: na4m@arrl.net (Phil Duff); Date: Thu Aug 14 13:43:07 2003; To: <towertalk@contesting.com> A TH7DX weighs 75 lbs and is rated 9.4 sq ft wind load. A TH6DXX has one less driven element so will be a bit less, probably around 8 sq ft. and 70 lbs. 73 Phil NA4M; /archives//html/Towertalk/2003-08/msg00533.html (7,154 bytes)
3. [TowerTalk] copper ground strap (score: 1): Author: na4m@arrl.net (Phil Duff); Date: Thu Jun 19 15:25:20 2003; http://wrblock.com/products.htm _. ._ ...._ __ _. ._ ...._ __ _. ._ ...._ __ _. ._ ...._ __ Phil Duff NA4M Ann Duff Georgetown, Texas; /archives//html/Towertalk/2003-06/msg00275.html (7,675 bytes)
4. [TowerTalk] OT: Location Location? (score: 1): Author: na4m@arrl.net (Phil Duff); Date: Fri Apr 4 18:37:50 2003; Something to keep in mind is that many older housing developments may have more liberal or no CC&R's regarding antennas. It just varies all over the map but as a general rule many of the newer develo; /archives//html/Towertalk/2003-04/msg00063.html (8,942 bytes)
5. [TowerTalk] TH6DX (score: 1): Author: na4m@arrl.net (Phil Duff); Date: Sat Jan 25 17:20:30 2003; I disagree that any TH6 is "near end of service life". It depends on the condition of the individual beam. I have 2 TH7's. One started as a TH6 I purchased new in 1971. I converted it to a TH7. It sh; /archives//html/Towertalk/2003-01/msg00414.html (7,581 bytes)
6. [TowerTalk] TH6DX (score: 1): Author: na4m@arrl.net (Phil Duff); Date: Sat Jan 25 21:59:08 2003; Of course nothing lasts forever. But how long does it take for well built aluminum beams to start falling apart from age & fatigue? I've got 30+ yrs on my top TH6/7 and no elements or pieces have fal; /archives//html/Towertalk/2003-01/msg00425.html (7,676 bytes)
7. [Towertalk] LPDAs... (score: 1): Author: na4m@arrl.net (Phil Duff); Date: Fri, 15 Nov 2002 00:04:04 +0000; Now that's a really Interesting thought... If they have the technology to vary the element lengths they should be able to scale it to vary the boom length for each band for optimum element spacing. 7; /archives//html/Towertalk/2002-11/msg00316.html (8,393 bytes)
8. [Towertalk] LPA designs (score: 1): Author: na4m@arrl.net (Phil Duff); Date: Fri, 15 Nov 2002 20:59:56 +0000; I find the numbers for the "efficiency" of the LPDA as compared to other beams to be interesting. Here's examples from the Tennadyne web site: LPDA 99.2% Mono-Band Cubical Quad 98.0% Mono-Band Log-Ce; /archives//html/Towertalk/2002-11/msg00353.html (8,292 bytes)
9. [Towertalk] remote antenna switch (score: 1): Author: na4m@arrl.net (Phil Duff); Date: Fri, 09 Aug 2002 14:47:48 +0000; The Ameritron RCS-8V is rated : VSWR is less than 1.2 from DC to 250 MHz and less than 0.1 dB loss at 150 MHz - It handles 5 KW below 30 MHz and 1 KW at 150 MHz. The manual also states "only a slight; /archives//html/Towertalk/2002-08/msg00289.html (7,675 bytes)
10. [Towertalk] ARRL insurance (score: 1): Author: na4m@arrl.net (Phil Duff); Date: Tue, 09 Jul 2002 18:53:51 +0000; Is there a coverage limit for tower/antennas/rotors? I was told by another ham that tower coverage was limited to $5,000. under the ARRL sponsored plan. The plan information I was mailed didn't state; /archives//html/Towertalk/2002-07/msg00231.html (7,796 bytes)
11. [Towertalk] Hy-Gain HG-54HD cable (score: 1): Author: na4m@arrl.net (Phil Duff); Date: Tue, 23 Jul 2002 02:52:23 +0000; I've had to replace TH6/7 traps for the same reason - trap full of roasted bug debris. After the last occurrence I thought I would try something to keep the buggers out - I purchased fiberglass windo; /archives//html/Towertalk/2002-07/msg00618.html (8,880 bytes)
12. [Towertalk] Phillystran Grips (score: 1): Author: na4m@arrl.net (Phil Duff); Date: Tue, 30 Jul 2002 21:58:51 +0000; Looking the pictorials in the Phillystran page above raises a question with me. In the diagrams shown for "Hardware Recommended..." attaching the Phillystran Big Grip Dead Ends to either an anchor ro; /archives//html/Towertalk/2002-07/msg00832.html (8,622 bytes)
13. [Towertalk] Raised Guy Stays (score: 1): Author: na4m@arrl.net (Phil Duff); Date: Wed, 26 Jun 2002 04:16:11 +0000; Yep - check the scrap yards before shopping for new "I" beams. In either case - get the scrap/steel yard to have a torch man cut one end of each "I" beam at about a 45 deg angle. Then after you drill; /archives//html/Towertalk/2002-06/msg00406.html (8,447 bytes)
14. [Towertalk] Insurance Companies (score: 1): Author: na4m@arrl.net (Phil Duff); Date: Wed, 08 May 2002 02:08:17 +0000; My State Farm Texas Form B Homeowners policy has a rider "Television & Radio Antenna" that I added to my policy and I chose a coverage amount. Runs a little over $4/$100 coverage. The ARRL ham radio; /archives//html/Towertalk/2002-05/msg00167.html (7,954 bytes)
15. [Towertalk] Seeking input for new antenna. (score: 1): Author: na4m@arrl.net (Phil Duff); Date: Fri, 10 May 2002 15:38:34 +0000; Has anyone stacked any "shorty-forty" 2 el 40m beams with an LP? Do the LP's show any interaction from the 40m antenna, especially on 15M? Does the design of the LP's preclude this kind of interactio; /archives//html/Towertalk/2002-05/msg00285.html (9,015 bytes)
16. [Towertalk] Orion RC2800 controller (score: 1): Author: na4m@arrl.net (Phil Duff); Date: Sat, 06 Apr 2002 02:56:57 +0000; I run my prop-pitch with a RC2800P-A controller. My M2 invoice shows it as an RC2800PP. Not sure what differences there are between current production units as far as their power-supply output rating; /archives//html/Towertalk/2002-04/msg00199.html (9,344 bytes)
17. [Towertalk] 620/340 (score: 1): Author: na4m@arrl.net (Phil Duff); Date: Sun, 14 Apr 2002 12:56:31 +0000; Instead of double/triple-rowing the joint rivets why not use a couple of small stainless screws/bolts with appropriate lock washers and nuts or nylock nuts? As matter of fact if there is a need to do; /archives//html/Towertalk/2002-04/msg00485.html (8,388 bytes)
18. [Towertalk] Ground rods for Polyphaser clamps (score: 1): Author: na4m@arrl.net (Phil Duff); Date: Sat, 20 Apr 2002 16:50:39 +0000; I ran into the same problem. I made shims out of the copper strips to build up the rod diameter to fit the clamps. 73 Phil NA4M -. .- ....- -- -. .- ....- -- -. .- ....- -- -. .- ....- -- -. .- ....-; /archives//html/Towertalk/2002-04/msg00795.html (8,236 bytes)
19. [Towertalk] Mosley (score: 1): Author: na4m@arrl.net (Phil Duff); Date: Wed, 24 Apr 2002 03:55:05 +0000; I agree! Ridiculous. Even the military (funded by taxpayers) is getting ripped off by Mosley at those prices. Maybe the G.A.O.would like to get a copy of that invoice if the military is getting charg; /archives//html/Towertalk/2002-04/msg00968.html (6,912 bytes)
20. [Towertalk] Deed restrictions - It's about camels and frogs (score: 1): Author: na4m@arrl.net (Phil Duff); Date: Thu, 25 Apr 2002 12:37:31 +0000; I think K4IA's insight points out that for the ARRL to have any chance of success in congress they must first work with those lobbies and gain some measure of their support. Without their support con; /archives//html/Towertalk/2002-04/msg01016.html (10,105 bytes)

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