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References: [ +from:G3SEK@ifwtech.demon.co.uk: 91 ]

Total 91 documents matching your query.

1. [TowerTalk] Stacking question (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Thu, 11 Nov 1999 22:29:53 +0000; No, the ERP is doubled: same total power radiated * twice the gain (3dB) = twice the ERP. What happens is that the voltages received from each antenna add in phase (in the optimum direction) which ac; /archives//html/Towertalk/1999-11/msg00214.html (8,168 bytes)
2. [TowerTalk] re: figure 8 knots (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Mon, 18 Oct 1999 07:18:38 +0100; The double figure-8 is excellent for making rope eyes, either in bare rope or tied around a metal or nylon eye. I've used it a lot, and never had one slip, or even show signs of movement. Another goo; /archives//html/Towertalk/1999-10/msg00501.html (8,209 bytes)
3. [TowerTalk] Increasing rotator voltage? (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Thu, 9 Sep 1999 12:42:24 +0100; I'm using a small KR-600 rotator, and the torque isn't always as much as it needs to be because of the voltage drop along 150ft of cable. (It isn't a capacitor problem - been there, checked that.) Do; /archives//html/Towertalk/1999-09/msg00217.html (7,368 bytes)
4. [TowerTalk] Small Beam Opinions (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Sat, 14 Aug 1999 08:49:39 +0100; A brick chimney will support a lightweight VHF/UHF antenna on a short mast, but beyond that you're living dangerously. When you bind together a block of brickwork using chimney lashings, the effect o; /archives//html/Towertalk/1999-08/msg00241.html (8,571 bytes)
5. [TowerTalk] Sateliite Dish Acuator Arm (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Sun, 8 Aug 1999 23:26:15 +0100; Almost all moonbounce operators are using satellite screw-jacks, because they are so much stronger and better value than sidewise conventional rotators. The readout methods vary a lot, depending part; /archives//html/Towertalk/1999-08/msg00164.html (8,595 bytes)
6. [TowerTalk] Andrews LDF6-50 (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Tue, 15 Jun 1999 23:22:04 +0100; You wouldn't want to know the price of a genuine Andrew splice. It includes a double-ended self-tapping gadget to join the two inner conductors together, with fancy tapered self-cutting threads - one; /archives//html/Towertalk/1999-06/msg00133.html (8,149 bytes)
7. [TowerTalk] Boom caps. Are they needed? (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Tue, 4 May 1999 13:01:54 +0100; Also, HF yagi booms are just the size for small birds to get inside and then get stuck. End caps prevent that (but there are other solutions as well). 73 from Ian G3SEK Editor, 'The VHF/UHF DX Book'; /archives//html/Towertalk/1999-05/msg00086.html (8,551 bytes)
8. [TowerTalk] Guying / VHF-UHF (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Tue, 13 Apr 1999 07:59:53 +0100; You can expect high-order VHF resonances in normal lengths of guy wire, considerable scattering causing pattern distortion, and some loss of gain. Obviously these effects will depend on the azimuth o; /archives//html/Towertalk/1999-04/msg00337.html (8,313 bytes)
9. [TowerTalk] 2m yagi installation (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Mon, 12 Apr 1999 20:13:42 +0100; That's what most people find. With intensive modeling of both the yagi and the support structure, it is possible to get the gain degradation down to about 1dB - information from F/G8MBI (hosted at my; /archives//html/Towertalk/1999-04/msg00335.html (9,956 bytes)
10. [TowerTalk] Radial Fixing (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Sun, 4 Apr 1999 15:49:31 +0100; "Hairpins" bent from any old stiff wire. Swap you a big box of them, for your ticket to Dayton. 73 from Ian G3SEK Editor, 'The VHF/UHF DX Book' 'In Practice' columnist for RadCom (RSGB) http://www.if; /archives//html/Towertalk/1999-04/msg00084.html (8,053 bytes)
11. [TowerTalk] WTD: Create Rotator Repair Parts (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Sun, 4 Apr 1999 15:46:31 +0100; Try an auto starter ring and drive gear: large diameter, hardened steel, and free from a scrapyard. Still, the original question was about turning a two-foot dish with a 1-2deg beamwidth. The issues; /archives//html/Towertalk/1999-04/msg00085.html (8,510 bytes)
12. [TowerTalk] Rotator for Microwave (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Sat, 3 Apr 1999 07:51:40 +0100; In that price range, something like the KR-600RC is a reasonable buy. (After Yaesu took over Kenpro they changed the number, but IIRC it's still something with a 600 in it). The "RC" is the important; /archives//html/Towertalk/1999-04/msg00042.html (8,480 bytes)
13. [TowerTalk] Best vs. Maxwell -- Again??( LONG !!) (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Thu, 18 Mar 1999 17:09:12 +0000; Not likely! Rules of thumb are just as bad as extreme cases. There is no substitute for thinking about the *actual* case. 73 from Ian G3SEK Editor, 'The VHF/UHF DX Book' 'In Practice' columnist for R; /archives//html/Towertalk/1999-03/msg00323.html (8,763 bytes)
14. [TowerTalk] TWO VERTICALS One Fed 90degrees Behind The Other (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Mon, 1 Feb 1999 13:27:53 +0000; The last few editions of the ARRL Handbook have had it correct. Anyone who doesn't already have one of the big fat ones with a disk in the back would do well to update to the latest edition - there h; /archives//html/Towertalk/1999-02/msg00007.html (8,186 bytes)
15. [TowerTalk] loctite on ham-4 bolts? (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Wed, 27 Jan 1999 07:45:30 +0000; Corrosion between the dissimilar metals is always going to ruin those threads. Either you can't get the bolts out, or when you do, they take a layer of corroded internal thread out with them. Every t; /archives//html/Towertalk/1999-01/msg00482.html (9,194 bytes)
16. [TowerTalk] Antenna Masts, hydraulic, electric or air operated (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Wed, 13 Jan 1999 08:12:52 +0000; I have two 40ft military surplus air-operated Clark masts here. The section length is 6ft and the whole thing nests down to about 7ft which is very convenient to work on. The handbook says it can be; /archives//html/Towertalk/1999-01/msg00228.html (12,291 bytes)
17. [TowerTalk] How much can a chimney support? (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Sun, 10 Jan 1999 23:35:05 +0000; Remember that chimneys are not really designed or built to support anything other than themselves. The sideways wind force on the mast translates into a turning moment which tries to break the mortar; /archives//html/Towertalk/1999-01/msg00172.html (10,626 bytes)
18. [TowerTalk] : Phased array radial query (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Sun, 20 Dec 1998 13:28:33 +0000; Not sure - but whatever you do, make all the sets of radials identical. G3HCT wrote an article for RadCom last year which showed how important that can be in getting a really good F/B ratio in all sw; /archives//html/Towertalk/1998-12/msg00298.html (9,363 bytes)
19. [TowerTalk] Ameritron Remote Controlled Switches (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Tue, 10 Nov 1998 20:51:57 +0000; Given your expertise and diligence with assembling N connectors, you probably haven't been taking many chances, especially at HF. Perfect N connectors will handle 1.5kW ICAS at 432MHz (Reference: K1F; /archives//html/Towertalk/1998-11/msg00271.html (12,245 bytes)
20. [TowerTalk] Ameritron Remote Controlled Switches (score: 1): Author: G3SEK@ifwtech.demon.co.uk (Ian White, G3SEK); Date: Mon, 9 Nov 1998 08:14:31 +0000; This topic was discussed on the AMPS list quite recently. In practice, N connectors are *current* limited. Their center pin is quite small, basically similar to a BNC. They will handle several ampere; /archives//html/Towertalk/1998-11/msg00224.html (10,496 bytes)

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