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41. Re: [Amps] Transformers in series (score: 1): Author: "Barrie Smith" <barrie@centric.net>; Date: Sun, 12 Mar 2006 14:19:57 -0700; Thanks Bill, and all. Seems as if I had forgotten some basic stuff! This application is for low-voltage relays, through about 160' of cable, which is still in a coil on the shack floor. The two rela; /archives//html/Amps/2006-03/msg00295.html (9,561 bytes)
42. Re: [Amps] 4CX250B and data sheets in general. (score: 1): Author: "Barrie Smith" <barrie@centric.net>; Date: Tue, 4 Apr 2006 18:53:14 -0600; Following this thread, I pulled down my very-own 1955 Eimac catalog, because I happened to remember some specs relative to the 4-65A that I had wondered about from time to time. This particular spec; /archives//html/Amps/2006-04/msg00069.html (7,433 bytes)
43. [Amps] FT-736R power drop-off (score: 1): Author: "Barrie Smith" <barrie@centric.net>; Date: Wed, 5 Apr 2006 19:52:32 -0600; I'm now QRV 432 EME again, using JT digital mode, with an FT-736R driving a solid-state amp to 175 watts. When I finish the new "cat proof" power supply, the SS amp will drive a pair of 3XCPX800s. I'; /archives//html/Amps/2006-04/msg00090.html (6,690 bytes)
44. [Amps] Strange power supply (score: 1): Author: "Barrie Smith" <barrie@centric.net>; Date: Wed, 19 Apr 2006 18:52:23 -0600; I recently boxed-in my all-purpose power supply with thin panels of wood, in order to protect the cats, and run my 432 amp. Just prior to the box-in, I ran my 8877 6M amp at 4200 volts idle, and 3800; /archives//html/Amps/2006-04/msg00301.html (7,179 bytes)
45. Re: [Amps] Strange power supply (score: 1): Author: "Barrie Smith" <barrie@centric.net>; Date: Wed, 19 Apr 2006 19:51:50 -0600; _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2006-04/msg00306.html (9,553 bytes)
46. [Amps] More strange PS (score: 1): Author: "Barrie Smith" <barrie@centric.net>; Date: Thu, 20 Apr 2006 11:59:31 -0600; I should have mentioned in my original post that the power supply has two 32 MFD @ 5000 volt oil caps installed. I have other, identical caps that I could swap in, which I will do if other measures f; /archives//html/Amps/2006-04/msg00316.html (6,365 bytes)
47. [Amps] More power supply (score: 1): Author: "Barrie Smith" <barrie@centric.net>; Date: Sun, 23 Apr 2006 19:37:15 -0600; I've been testing and measuring this and that on my "growling" power supply, in an effort to eliminate all possibilities before I dig in and change the diodes. One thing that I noticed that has me pu; /archives//html/Amps/2006-04/msg00342.html (7,236 bytes)
48. Re: [Amps] Cal Lab (score: 1): Author: "Barrie Smith" <barrie@centric.net>; Date: Sun, 23 Apr 2006 19:59:17 -0600; That's the fun thing about Photoshop! I can take a meter face, scan it into Photoshop, and make a face of any color and any scale. Was that a joke? _______________________________________________ Am; /archives//html/Amps/2006-04/msg00346.html (8,844 bytes)
49. Re: [Amps] Cal Lab (score: 1): Author: "Barrie Smith" <barrie@centric.net>; Date: Sun, 23 Apr 2006 20:41:34 -0600; More professional, indeed? Well, being a radio amateur, I'd guess I don't need to attempt to be professional. However, I am a professional Photoshop user, so anything that program can do I can do be; /archives//html/Amps/2006-04/msg00348.html (8,187 bytes)
50. Re: [Amps] Amp Faceplates (score: 1): Author: "Barrie Smith" <barrie@centric.net>; Date: Fri, 28 Apr 2006 12:33:30 -0600; stuff, might fill up with paint before you got a good covering. I've made several front panel coverings by first scanning the aluminum front panel, with all meter and switch holes in, and then "buil; /archives//html/Amps/2006-04/msg00425.html (8,252 bytes)
51. [Amps] 50 MHZ Brick (score: 1): Author: "Barrie Smith" <barrie@centric.net>; Date: Thu, 29 Jun 2006 11:55:25 -0600; When 6M is open, especially Es, 20 watts into a decent antenna is a heap. In 1957, when I first got on 6M, my amplifier was an 832A running 8 watts input and I worked a lot of stations with an indece; /archives//html/Amps/2006-06/msg00640.html (6,506 bytes)
52. [Amps] QRO Coax Switches (score: 1): Author: "Barrie Smith" <barrie@centric.net>; Date: Thu, 29 Jun 2006 19:23:43 -0600; Anyone know of a source for coax switches capable of handling "above average power"? 7/16" DIN connectors would be a plus. TNX, Barrie, W7ALW, DN36au, QRV 6M, 432 & 1296 EME _________________________; /archives//html/Amps/2006-06/msg00644.html (6,244 bytes)
53. [Amps] Hi Mu, Low Mu (score: 1): Author: "Barrie Smith" <barrie@centric.net>; Date: Wed, 19 Jul 2006 16:30:48 -0600; Sounds like names for cats. Is there a reason for having high and low Mu versions of the same tube? I know that in AM, for example, a 250TH is found in RF service and a 250TL will be used in the audi; /archives//html/Amps/2006-07/msg00650.html (6,785 bytes)
54. [Amps] Caustic soda (score: 1): Author: "Barrie Smith" <barrie@centric.net>; Date: Sun, 23 Jul 2006 11:38:38 -0600; Caustic soda and aluminum. A few years back I built some heat-sinks for the diodes in a power supply. Since they were two piece units, I drilled and tapped the aluminum for final assembly. I then imm; /archives//html/Amps/2006-07/msg00950.html (6,802 bytes)
55. Re: [Amps] 3cx3000A7 driver (score: 1): Author: "Barrie Smith" <barrie@centric.net>; Date: Sun, 23 Jul 2006 13:18:06 -0600; Colin: That was a tease. Tell us about the rig. Tubes? Power? 73, Barrie, W7ALW _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mail; /archives//html/Amps/2006-07/msg00965.html (8,947 bytes)
56. Re: [Amps] amp hardware (score: 1): Author: "Barrie Smith" <barrie@centric.net>; Date: Tue, 10 Apr 2007 10:59:13 -0600; I've used this caustice soda (sodium hydroxide) treatment on aluminum many times, especially for front panels, with good luck. Aside from the somewhat dangerous aspects of this prceedure, a real prob; /archives//html/Amps/2007-04/msg00056.html (9,585 bytes)
57. Re: [Amps] RE : amp hardware (score: 1): Author: "Barrie Smith" <barrie@centric.net>; Date: Tue, 10 Apr 2007 15:12:58 -0600; Another option is a device I use at times (can't remember the name at the moment. It's at home and I'm at work.) is a largish pair of pliers that presses a special nut into a certain hole size. Capti; /archives//html/Amps/2007-04/msg00066.html (8,064 bytes)
58. Re: [Amps] RE : amp hardware (score: 1): Author: "Barrie Smith" <barrie@centric.net>; Date: Tue, 10 Apr 2007 16:36:26 -0600; See below! the rivet upon panel strong aluminum _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2007-04/msg00073.html (10,394 bytes)
59. Re: [Amps] OT: TVI (was: ceramic capacitor ratings) (score: 1): Author: "Barrie Smith" <barrie@centric.net>; Date: Sun, 15 Apr 2007 12:00:31 -0600; Several years ago, when I was running 375 watts on 6M mobile, my wife and I drove to a rare grid-square here in Montana to pass the grid out during a contest. We came upon a bar out in the middle of; /archives//html/Amps/2007-04/msg00141.html (8,169 bytes)
60. [Amps] Eimac 15E (score: 1): Author: "Barrie Smith" <barrie@centric.net>; Date: Sun, 15 Apr 2007 17:40:53 -0600; Anyone know where I can get a complete spec sheet for the Eimac 15E? It's a physically small, glass triode, used (I'm told) as an output tube in aircraft radar. Evidently, a long time age. All connec; /archives//html/Amps/2007-04/msg00148.html (7,282 bytes)

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