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61. Re: [Amps] Ultimate safety for house wiring (score: 1): Author: gdaught6@stanford.edu; Date: Fri, 18 Nov 2005 10:56:16 -0800; < snip > And mine, though it never got infected, took forever to heal. 73, George T. Daughters, K6GT _______________________________________________ Amps mailing list Amps@contesting.com http://lists; /archives//html/Amps/2005-11/msg00312.html (7,408 bytes)
62. Re: [Amps] Is This 4CX1600B Still Good? (score: 1): Author: gdaught6@stanford.edu; Date: Wed, 23 Nov 2005 08:50:19 -0800; How would one know? The tube is colored ceramic. Disconnect the HV!!! Then you could turn it on for a few minutes and see if it gets warm. NOTICE!!!: Disconnect and or DISCHARGE the HV before you sti; /archives//html/Amps/2005-11/msg00458.html (7,761 bytes)
63. Re: [Amps] Is This 4CX1600B Still Good? (score: 1): Author: gdaught6@stanford.edu; Date: Thu, 24 Nov 2005 11:47:28 -0800; That's close. It could have continuity and still be bad (but not likely); and remember that the resistance goes up a lot when the filament gets hot. 73, George T. Daughters, K6GT ____________________; /archives//html/Amps/2005-11/msg00484.html (8,237 bytes)
64. Re: [Amps] Designing the Cleanest Linear with RF Negative Feedback (score: 1): Author: gdaught6@stanford.edu; Date: Sun, 18 Dec 2005 10:13:50 -0800; < snip, snip > I believe that IMD on the 4cx3000a is actually tested before shipping to guarantee -32db and -37db, and "typical operation" says -35db and - 40db at 5300W out! So Marv's estimate of -4; /archives//html/Amps/2005-12/msg00246.html (9,327 bytes)
65. Re: [Amps] Parasitic suppressor resistor (score: 1): Author: gdaught6@stanford.edu; Date: Sun, 01 Jan 2006 14:10:12 -0800; It's pretty much perfect for a grid resistor for a medium-sized tetrode. 73, George T. Daughters, K6GT _______________________________________________ Amps mailing list Amps@contesting.com http://lis; /archives//html/Amps/2006-01/msg00018.html (7,393 bytes)
66. [Amps] silicone remover? (score: 1): Author: gdaught6@stanford.edu; Date: Wed, 11 Jan 2006 11:08:43 -0800; Hi all, I'm converting an Eimac SK1400 to ground the screen grid. I've removed the insulating washers, but I've got a thin film of silicone rubber on the finger stock and the mounting rings. I've tri; /archives//html/Amps/2006-01/msg00343.html (7,138 bytes)
67. [Amps] silicone solvent question (score: 1): Author: gdaught6@stanford.edu; Date: Thu, 12 Jan 2006 11:34:33 -0800; Hi all, First, thanks to those who responded to my question regarding a solvent for cured silicone rubber films. Here are the responses (grouped) with my findings: 1. Read what the back of a tube of; /archives//html/Amps/2006-01/msg00359.html (7,365 bytes)
68. Re: [Amps] Burn-in for Eimac? (score: 1): Author: gdaught6@stanford.edu; Date: Mon, 16 Jan 2006 15:55:49 -0800; Hi all, A few days ago, someone asked "where is the getter on a thoriated tungsten filament tube?" [as opposed to an oxide cathode tube...] I just spent the morning with an expert in rebuilding of th; /archives//html/Amps/2006-01/msg00414.html (8,630 bytes)
69. Re: [Amps] HF-2500DX Time is about to tell the story...[long] (score: 1): Author: gdaught6@stanford.edu; Date: Wed, 25 Jan 2006 18:18:15 -0800; Hello Bob, Good on you! That's always fun. Get yourself a couple of retired medical instruments called "hemostats" and/or "needle-drivers". I've got some small, short ones, and some really long ones.; /archives//html/Amps/2006-01/msg00610.html (7,958 bytes)
70. Re: [Amps] What blower? (score: 1): Author: gdaught6@stanford.edu; Date: Sat, 28 Jan 2006 09:18:07 -0800; That's certainly how the word sounds, but the spelling is "Tempilstik". And there are also little jars of lacquer, called, logically, "Tempilaq". The problem is that to estimate the actual temperatur; /archives//html/Amps/2006-01/msg00646.html (8,619 bytes)
71. Re: [Amps] cathode to ground in tetrode amp (score: 1): Author: gdaught6@stanford.edu; Date: Mon, 30 Jan 2006 13:18:40 -0800; You'll notice that Ian still recommends a shunt resistor to ground. That's very good advice, in my opinion! IMHO, the cathode resistor is not "obviously a mistake." Rich Measures' website (and I) oft; /archives//html/Amps/2006-01/msg00732.html (8,967 bytes)
72. [Amps] (Fwd) Re: Passive grid triodes? (score: 1): Author: gdaught6@stanford.edu; Date: Fri, 17 Feb 2006 13:27:57 -0800; Use great care in selecting what tetrode you use if you want to draw grid current! Many of the modern high-power tetrodes (4cx800 to name one) have VERY SMALL grid dissipation capabilities! It's pret; /archives//html/Amps/2006-02/msg00323.html (6,609 bytes)
73. [Amps] ef johnson rotarty inductor info sought (score: 1): Author: gdaught6@stanford.edu; Date: Sun, 26 Feb 2006 13:20:31 -0800; Hello all, Does anyone have specs (inductance range, power level, etc.) on the following EF Johnson coils? 226-1 222-103 Any information will be greatly appreciated! TIA es 73, George T. Daughters, K; /archives//html/Amps/2006-02/msg00593.html (6,936 bytes)
74. Re: [Amps] ef johnson rotarty inductor info sought (score: 1): Author: gdaught6@stanford.edu; Date: Sun, 26 Feb 2006 15:50:03 -0800; Hi Rich, Yes, my shafts measure 3/8". 73, George T. Daughters, K6GT _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/; /archives//html/Amps/2006-02/msg00599.html (7,625 bytes)
75. [Amps] right angle drive sought (score: 1): Author: gdaught6@stanford.edu; Date: Fri, 03 Mar 2006 15:55:34 -0800; Hi All, I want to mount my two vacuum capacitors vertically, so I need rightangle drives to put the turns counting dials on the front panel. I have one such drive. This is a 90 degree drive with 1:1; /archives//html/Amps/2006-03/msg00052.html (6,759 bytes)
76. Re: [Amps] Trichloroethene (score: 1): Author: gdaught6@stanford.edu; Date: Wed, 15 Mar 2006 22:03:39 -0800; Warning, warning, Will Robinson. Not to be confused with trichloroethane, TCE = trichloroethylene is VERY bad for you. Your liver, for instance, is in grave danger. Besides breathing it, it is absorb; /archives//html/Amps/2006-03/msg00426.html (7,994 bytes)
77. Re: [Amps] CHASSIS (score: 1): Author: gdaught6@stanford.edu; Date: Thu, 16 Mar 2006 09:16:27 -0800; Hi Colin, Then there's the Morgan, the only car I know of that requires a termite inspection of the frame members before selling! 8>) 73, George T. Daughters, K6GT ___________________________________; /archives//html/Amps/2006-03/msg00466.html (7,901 bytes)
78. Re: [Amps] Cleaning Stuff (score: 1): Author: gdaught6@stanford.edu; Date: Sat, 18 Mar 2006 08:59:19 -0800; Well, they try, but it's not always good. I remember the literature accompanying a small oxygen bottle (years ago) "Dangerous in concentrations below 20%." That always brought a chuckle. 73, George T; /archives//html/Amps/2006-03/msg00536.html (7,082 bytes)
79. Re: [Amps] Rivet-nuts (score: 1): Author: gdaught6@stanford.edu; Date: Wed, 05 Apr 2006 14:53:30 -0700; I'm just ordering a batch from Small Parts Inc. 73, George T. Daughters, K6GT _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman; /archives//html/Amps/2006-04/msg00089.html (7,126 bytes)
80. Re: [Amps] adding second tube to AL1200 (score: 1): Author: gdaught6@stanford.edu; Date: Wed, 17 May 2006 17:55:38 -0700; No need for all of this vitriol. The point is, putting a second tube in almost ANY amplifier, from ANY manufacturer, is not likely to be a good idea. That goes for Collins, Alpha, or whoever is our f; /archives//html/Amps/2006-05/msg00217.html (8,351 bytes)

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