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61. [Amps] re: EBS at soft or quiet moments (score: 170): Author: G3SEK at ifwtech.co.uk (Ian White, G3SEK); Date: Mon Aug 4 08:39:30 2003; This is the aim. EBS seems to have a poor reputation because of either: 1. Being the only means of keying the amplifier, which is guaranteed to cause hot-switching. Competent EBS works along with th; /archives//html/Amps/2002-09/msg00314.html (8,766 bytes)
62. [Amps] re: EBS at soft or quiet moments (score: 170): Author: G3SEK at ifwtech.co.uk (Ian White, G3SEK); Date: Mon Aug 4 22:59:37 2003; The logic would be to kick the EBS on immediately the PTT line goes low (TX). When the PTT goes high, release the EBS after a short delay (because transceivers typically output RF for a few ms after; /archives//html/Amps/2002-09/msg00320.html (10,732 bytes)
63. [Amps] Shorted PI-NET turns (score: 170): Author: G3SEK at ifwtech.co.uk (Ian White, G3SEK); Date: Wed Aug 6 07:33:49 2003; You can short out whole chunks of a normal air-wound solenoid coil because the magnetic coupling between the turns is not overly tight. You don't see high circulating currents (the "shorted turn effe; /archives//html/Amps/2002-09/msg00329.html (8,150 bytes)
64. [Amps] Need info on 8874's (score: 170): Author: G3SEK at ifwtech.co.uk (Ian White, G3SEK); Date: Mon Aug 18 08:19:40 2003; Tape over the anode-grid ceramic to avoid contaminating it, and then use more aggressive solvents. For example, soak the anode cooler upside-down in a pot of solvent, and then blast out the mess with; /archives//html/Amps/2002-09/msg00397.html (8,411 bytes)
65. [Amps] Re: Beryllium Oxide (was Need info on 8874's) (score: 170): Author: G3SEK at ifwtech.co.uk (Ian White, G3SEK); Date: Wed Aug 20 10:04:21 2003; Exactly the opposite! The aim is to keep all the heat up there in the anode cooler, and keep the base end of the tube as cool as possible to avoid warping the delicate grid geometry. So you need a po; /archives//html/Amps/2002-09/msg00403.html (7,695 bytes)
66. [Amps] NOT ifwtech.com (score: 23): Author: "Ian White, G3SEK" <G3SEK@ifwtech.co.uk>; Date: Tue, 12 Oct 2004 14:01:38 +0100; Sorry for the bandwidth, but... Please note: my former ifwtech.com domain is NOT under my control any more. I lost that domain name 3 years ago, due to my ISP's careless failure to renew it. Fortunat; /archives//html/Amps/2004-10/msg00170.html (8,050 bytes)
67. [Amps] Re: [Amps] G3SEK´s homepage (score: 12): Author: Ian White, G3SEK" <g3sek@ifwtech.co.uk (Ian White, G3SEK); Date: Thu, 18 Apr 2002 17:10:39 +0100; A few weeks ago, I lost the ifwtech.com domain (or rather, my incompetent ISP let it go). Fortunately I also had ifwtech.co.uk registered, so that's where you will find the pages now. I made an annou; /archives//html/Amps/2002-04/msg00428.html (7,869 bytes)

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