- 1. [Towertalk] Temporary Use Permits (score: 1)
- Author: ka4inm@tampabay.rr.com (Ronald KA4INM Youvan)
- Date: Sun, 05 Jan 2003 01:21:40 +0000
- snip I hope you are an ARRL member, if so turn over every leaf and rock on their web site, (including their members only part) research it all. Ask your ARRL division mucky mucks, find out what they
- /archives//html/Towertalk/2003-01/msg00078.html (8,358 bytes)
- 2. [Towertalk] Position Indicator (score: 1)
- Author: ka4inm@tampabay.rr.com (Ronald KA4INM Youvan)
- Date: Sat, 11 Jan 2003 23:49:49 +0000
- Look at the 3 phases of the selsysn generator's output with a scope (when it turns), build 3 separate high input impedance, low impedance, high current output amplifiers es feed as many selsysn moto
- /archives//html/Towertalk/2003-01/msg00210.html (7,442 bytes)
- 3. [Towertalk] MIG Wire for antennas? (score: 1)
- Author: ka4inm@tampabay.rr.com (Ronald KA4INM Youvan)
- Date: Sun, 12 Jan 2003 04:44:27 +0000
- It depends on which type you are talking about, I don't know if it is available in AWG 12 or not, looks mighty thin to me, and it must support the weight of the balun/center insulator and coax. -- 7
- /archives//html/Towertalk/2003-01/msg00214.html (7,381 bytes)
- 4. [TowerTalk] 7/8" hardline gaskets (score: 1)
- Author: ka4inm@tampabay.rr.com (Ronald KA4INM Youvan)
- Date: Tue Jan 28 21:05:15 2003
- Call a few industrial bearings companies, some carry an unimaginable array of sizes. -- 73 (= Best Regards) de: Ron ka4inm@tampabay.rr.com 100% Slack. since July, 1997 (still free!) SENT D&T are UTC
- /archives//html/Towertalk/2003-01/msg00509.html (7,229 bytes)
- 5. [TowerTalk] 7/8" hardline gaskets (score: 1)
- Author: ka4inm@tampabay.rr.com (Ronald KA4INM Youvan)
- Date: Wed Jan 29 22:36:18 2003
- More like 100% silicone, as in red high temperature silicone gasket maker in a tube, stuff. I consider these to be permanent if not injured, the black kind can't compare for longevity. I changed vit
- /archives//html/Towertalk/2003-01/msg00566.html (7,437 bytes)
- 6. [Towertalk] Testing Equipment? (score: 1)
- Author: ka4inm@tampabay.rr.com (Ronald KA4INM Youvan)
- Date: Fri, 13 Dec 2002 01:23:06 +0000
- I expect they are all different, I visited one (out of doors) with a receiver and a chart recorder. (that rotated with the antenna, in either axis) The transmit antenna was a frequency cut dipole ab
- /archives//html/Towertalk/2002-12/msg00383.html (8,032 bytes)
- 7. [Towertalk] Testing Equipment? (score: 1)
- Author: ka4inm@tampabay.rr.com (Ronald KA4INM Youvan)
- Date: Fri, 13 Dec 2002 16:54:35 +0000
- They are horizontal dipoles. The original question and the replies related to antenna test ranges. The antenna under test was at the factory, it was mounted 30 feet in the air on a wooden trestle (o
- /archives//html/Towertalk/2002-12/msg00394.html (9,981 bytes)
- 8. [Towertalk] Re: Lighting Protection and Roof Towers & Lightning Rods LONG (score: 1)
- Author: ka4inm@tampabay.rr.com (Ronald KA4INM Youvan)
- Date: Sat, 14 Dec 2002 02:54:30 +0000
- The answer is simple, but hard to see. When a tower is properly grounded it conducts the (usually electrons) ground current, a massive ground current moving under but of opposite charge to the airbo
- /archives//html/Towertalk/2002-12/msg00410.html (9,088 bytes)
- 9. [Towertalk] Testing Equipment? (score: 1)
- Author: ka4inm@tampabay.rr.com (Ronald KA4INM Youvan)
- Date: Sat, 14 Dec 2002 02:58:00 +0000
- Was Harris broadcast, now sold to Dielectric Communications. No, TV and FM broadcast antennas only. -- 73 (= Best Regards) de: Ron ka4inm@tampabay.rr.com 100% Slack. since July, 1997 (still free!) S
- /archives//html/Towertalk/2002-12/msg00411.html (8,389 bytes)
- 10. [Towertalk] Dow-Key dirty contacts. & SO-239 Covers (score: 1)
- Author: ka4inm@tampabay.rr.com (Ronald KA4INM Youvan)
- Date: Sat, 14 Dec 2002 23:49:17 +0000
- Bad idea, too rough, use a thin strips of printer paper and possibly pressure from a jeweler's screwdriver or a fine pointed tool. If that doesn't do it, try thin strips of clean new grocery store b
- /archives//html/Towertalk/2002-12/msg00433.html (10,188 bytes)
- 11. [Towertalk] stripping enameled wire (score: 1)
- Author: ka4inm@tampabay.rr.com (Ronald KA4INM Youvan)
- Date: Wed, 18 Dec 2002 03:10:47 +0000
- In the olden times `magnet wire' had enamel on it. (color-less paint) Pain strippers will soften and remove these true enamels. Lately wire is coated with various resins' such as `spar varnish' a ph
- /archives//html/Towertalk/2002-12/msg00517.html (7,492 bytes)
- 12. [Towertalk] Balloon antenna/tower (score: 1)
- Author: ka4inm@tampabay.rr.com (Ronald KA4INM Youvan)
- Date: Sat, 02 Nov 2002 23:58:36 -0500
- Calculate the length from the formulae in the ARRL hand book, add 20% use an old VHF or UHF or CB antenna as the base (without any loading coil in the base). At the tip of the element (under the bal
- /archives//html/Towertalk/2002-11/msg00013.html (7,600 bytes)
- 13. [Towertalk] wet coax (score: 1)
- Author: ka4inm@tampabay.rr.com (Ronald KA4INM Youvan)
- Date: Fri, 15 Nov 2002 04:07:11 +0000
- Moisture in foam coax dielectric is adding resistance to the coax, the losses go up, the incident losses go up, the reflected losses go up. Moisture makes a bad load look good, and it keeps a good a
- /archives//html/Towertalk/2002-11/msg00325.html (7,120 bytes)
- 14. [Towertalk] LPA designs (score: 1)
- Author: ka4inm@tampabay.rr.com (Ronald KA4INM Youvan)
- Date: Sat, 16 Nov 2002 01:45:55 +0000
- That's not what I was taught. How many horizontal elements does a horizontally polarized 2 element yaggi have? How many horizontal elements does a horizontally polarized 2 element quad have? 73 (= B
- /archives//html/Towertalk/2002-11/msg00361.html (7,552 bytes)
- 15. [Towertalk] Loop Gain (was LPA designs) (score: 1)
- Author: ka4inm@tampabay.rr.com (Ronald KA4INM Youvan)
- Date: Sun, 17 Nov 2002 02:36:33 +0000
- The quad parasitic array was developed at broadcast station HCJB (by Jones) when the tips of their Yaggi (made of 3" aluminum irrigation pipe) transmit antenna melted off in the thin air of the over
- /archives//html/Towertalk/2002-11/msg00400.html (9,034 bytes)
- 16. [Towertalk] EZWAY TOWER (score: 1)
- Author: ka4inm@tampabay.rr.com (Ronald KA4INM Youvan)
- Date: Sun, 20 Oct 2002 01:04:27 -0400
- To the best of my knowledge they made towers in Tampa, Florida. I called their factory about 30 years ago, about some details of the 110' tower in the back yard of the Tampa TV station that I worked
- /archives//html/Towertalk/2002-10/msg00605.html (7,231 bytes)
- 17. [Towertalk] lmr 400 question (score: 1)
- Author: ka4inm@tampabay.rr.com (Ronald KA4INM Youvan)
- Date: Sun, 20 Oct 2002 01:18:37 -0400
- I would mount the end connector, a female if possible, binding it to a tower leg with a SS hose band and I would use cheap RG-8/U as the `whip cable' 4-6 feet is frequently used. (NOT foam) Every ti
- /archives//html/Towertalk/2002-10/msg00608.html (8,740 bytes)
- 18. [Towertalk] Moving To New QTH (score: 1)
- Author: ka4inm@tampabay.rr.com (Ronald KA4INM Youvan)
- Date: Sun, 20 Oct 2002 01:38:32 -0400
- 100 kW ERP, TPO will be between 5 and 50 kW, depending on antenna gain. One kind of FM transmit antenna like multiple stacked halos has a lot of downward radiation, few others have very much. (twist
- /archives//html/Towertalk/2002-10/msg00609.html (9,072 bytes)
- 19. [Towertalk] lmr 400 question (score: 1)
- Author: ka4inm@tampabay.rr.com (Ronald KA4INM Youvan)
- Date: Sat, 19 Oct 2002 16:19:10 -0400
- I have been doing it for 40+ years. I use a full sized propane torch with a `pencil flame' tip. I stand it on the work bench with the flame facing away from me. I cut the coax 2" from the back of th
- /archives//html/Towertalk/2002-10/msg00637.html (9,753 bytes)
- 20. [Towertalk] Counterweights for wire verticals (score: 1)
- Author: ka4inm@tampabay.rr.com (Ronald KA4INM Youvan)
- Date: Tue, 29 Oct 2002 00:26:38 -0500
- I have long tied the rope/cordage to a 10 to 12" long piece of 2 by 4 and run it through a `half block' an 8 by 8 by 8 concrete block, just right for a 40 meter dipole constructed of 12 AWG copper w
- /archives//html/Towertalk/2002-10/msg00817.html (9,466 bytes)
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