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41. Re: [Amps] HV Switch Mode Power Supplies (score: 1): Author: gdaught6@stanford.edu; Date: Wed, 22 Jun 2005 09:33:27 -0700; I would add to Bill's list of problems the fact that the things are terrible HF hash generators. We bought one. It works. The new rule is "Absolutely no microwave use while Grumps is on the radio!" I; /archives//html/Amps/2005-06/msg00175.html (7,754 bytes)
42. Re: [Amps] Plate Cap Capacitors (score: 1): Author: gdaught6@stanford.edu; Date: Thu, 23 Jun 2005 16:25:56 -0700; I'm not sure that's correct, but anyhow, I'll bet his call is I0YK, Tony. His webpage has a great tutorial on capacitors in RF circuits, as Hal says. I first found Tony's website by a Google search o; /archives//html/Amps/2005-06/msg00213.html (7,705 bytes)
43. [Amps] (Fwd) Re: Plate Cap Capacitors (score: 1): Author: gdaught6@stanford.edu; Date: Thu, 23 Jun 2005 20:15:03 -0700; Hi all, Sorry for the wrong callsign in my earlier post. Fede has it correct! 73, -- Forwarded message follows -- Subject: Re: [Amps] Plate Cap Capacitors From: "Federico J. Baldi LU4HKN" <federico_b; /archives//html/Amps/2005-06/msg00216.html (6,856 bytes)
44. [Amps] anode connector?? (score: 1): Author: gdaught6@stanford.edu; Date: Mon, 11 Jul 2005 15:37:57 -0700; Hi All, I'm nearing completion of "the conversion from Hell", removing the 3CV1500 from an Alpha 70V, and installing a 3CX1200Z7. I need to contact the anode of this tube, which won't accept the usua; /archives//html/Amps/2005-07/msg00094.html (6,547 bytes)
45. Re: [Amps] Tetrodes (score: 1): Author: gdaught6@stanford.edu; Date: Tue, 12 Jul 2005 13:55:48 -0700; < snip > You bet it can! Current from the anode supply enters the anode in the usual direction (this is Ben Franklin's current, not electron flow) and follows the arc inside the tube from anode to sc; /archives//html/Amps/2005-07/msg00122.html (8,073 bytes)
46. Re: [Amps] Tetrodes (score: 1): Author: gdaught6@stanford.edu; Date: Tue, 12 Jul 2005 21:16:58 -0700; Ian, please turn off the bubble machine, or whatever has to happen! I've gotten about 10 copies of this message. Or is it just me?! 73, George T. Daughters, K6GT _____________________________________; /archives//html/Amps/2005-07/msg00134.html (10,507 bytes)
47. Re: [Amps] GU-84B Cooling (score: 1): Author: gdaught6@stanford.edu; Date: Tue, 19 Jul 2005 15:47:47 -0700; The radiator is comparatively small. But why not take to heart what Rich, AG6K, says? "The only time there's too much cooling air is when it blows the tube out of the socket!" (or something like that; /archives//html/Amps/2005-07/msg00218.html (7,906 bytes)
48. Re: [Amps] Amps Digest, Vol 32, Issue 12: Metric system (score: 1): Author: gdaught6@stanford.edu; Date: Thu, 04 Aug 2005 20:07:51 -0700; OK, as a physicist I feel compelled to jump into this a little bit. Pressure is in units of force per unit area. "40 lbs" of oil pressure commonly means "40 pounds [a force] per square inch [an area]; /archives//html/Amps/2005-08/msg00137.html (10,479 bytes)
49. Re: [Amps] Relative influence of components to tonal quality(Was: Wrong Business) (score: 1): Author: gdaught6@stanford.edu; Date: Fri, 05 Aug 2005 08:52:07 -0700; < snip > I have occasionally used lengths of Monster Cable between the filament transformer and the tube socket. It is very flexible for its size, and easy to work with. It can sometimes be picked up; /archives//html/Amps/2005-08/msg00176.html (9,137 bytes)
50. [Amps] I0JX ? (score: 1): Author: gdaught6@stanford.edu; Date: Thu, 11 Aug 2005 15:58:21 -0700; Hi All, Has anybody communicated with I0JX (Tony, with one of the "big amp" websites) lately? I've e-mailed the address listed on his web page, but there's absolutely no response. 73, George T. Daugh; /archives//html/Amps/2005-08/msg00420.html (6,486 bytes)
51. Re: [Amps] Step Start (score: 1): Author: gdaught6@stanford.edu; Date: Fri, 12 Aug 2005 09:14:14 -0700; Hi all, While we're on the subject of soft/step start circuits, I'd like to ask a question that I've had for years, but never asked until now: Why do most step-start circuits in the primary of the HV; /archives//html/Amps/2005-08/msg00438.html (7,367 bytes)
52. Re: [Amps] Step Start (score: 1): Author: gdaught6@stanford.edu; Date: Fri, 12 Aug 2005 17:13:32 -0700; OK, the consensus response to my question: seems to be... As Rich and others have pointed out. But the two-resistor scheme has overflowed into the 240V only power supplies, probably due simply to "co; /archives//html/Amps/2005-08/msg00457.html (7,531 bytes)
53. Re: [Amps] CW and High Voltage (score: 1): Author: gdaught6@stanford.edu; Date: Sun, 04 Sep 2005 09:13:38 -0700; < snip, snip : other attributions > < more snips > In my opinion, we may be addressing what shouldn't be a problem. What I mean is this: the FIRST TIME I tune a new (or modified) amp, I believe it's; /archives//html/Amps/2005-09/msg00042.html (10,078 bytes)
54. [Amps] manual sought (score: 1): Author: gdaught6@stanford.edu; Date: Wed, 28 Sep 2005 14:31:38 -0700; Hi All, I'm desperately seeking the manual and schematic for an old Alpha 70V amplifier. I will gladly pay for copying, mailing, scanning or what have you. 73, George T. Daughters, K6GT _____________; /archives//html/Amps/2005-09/msg00356.html (6,299 bytes)
55. Re: [Amps] Emtorn DX3 problem (score: 1): Author: gdaught6@stanford.edu; Date: Fri, 30 Sep 2005 08:47:16 -0700; Hi, Curious. I would suspect the "soft-start" circuit in the Emtron as the culprit. It's the first place I would look, anyhow. It's a triac switching gizmo hooked up directly to the mains power line.; /archives//html/Amps/2005-09/msg00382.html (7,377 bytes)
56. Re: [Amps] 2006 ARRL Handbook (score: 1): Author: gdaught6@stanford.edu; Date: Sun, 09 Oct 2005 12:12:57 -0700; < snip > It may be easier, but this isn't what has happened in my experience. As the author of the "Sunnyvale/St. Petersburg" amplifier part of Chapter 13, I was frequently in contact with a handbook; /archives//html/Amps/2005-10/msg00213.html (8,047 bytes)
57. Re: [Amps] AC wiring (score: 1): Author: gdaught6@stanford.edu; Date: Sat, 22 Oct 2005 12:39:00 -0700; < snip > Yes. A very handy (indicating) way of testing the circuit for shorts! Less handy. Maybe lots of light, but short duration! #8-) 73, George T. Daughters, K6GT ________________________________; /archives//html/Amps/2005-10/msg00535.html (7,802 bytes)
58. [Amps] schematic software? (score: 1): Author: gdaught6@stanford.edu; Date: Tue, 01 Nov 2005 14:12:03 -0800; Hi all, Does anyone know of software which can be used to draw amplifier (and power supply and screen regulator) schematics? I'm looking for simple, and freeware or low-cost. I know about the some ex; /archives//html/Amps/2005-11/msg00013.html (6,769 bytes)
59. Re: [Amps] Emron rip-off (score: 1): Author: gdaught6@stanford.edu; Date: Fri, 11 Nov 2005 09:05:40 -0800; Rudi and his gang in Australia is Emtron ... note the "t". 73, George T. Daughters, K6GT _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.; /archives//html/Amps/2005-11/msg00143.html (6,957 bytes)
60. Re: [Amps] L4 power supply problem? (score: 1): Author: gdaught6@stanford.edu; Date: Mon, 14 Nov 2005 08:31:55 -0800; Probably 1N5408 73, George T. Daughters, K6GT _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2005-11/msg00178.html (7,313 bytes)

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