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41. Re: [Amps] Life and gain of 3-500Z (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Tue, 18 Jul 2006 10:33:46 -0400; So Jim, with the new Chinese tubes, RF Parts (probably made by Pride), with a 3,200 VDC supply, a reasonably stiff AC mains (240 volts at 30 amps), and a drive limit of 100 Watts, idling current set; /archives//html/Amps/2006-07/msg00571.html (12,868 bytes)
42. Re: [Amps] Life and gain of 3-500Z (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Tue, 18 Jul 2006 10:41:44 -0400; Oh, one last parameter, please allow for the grids to be strapped to ground also. Sorry for the omission. Gain _______________________________________________ Amps mailing list Amps@contesting.com ht; /archives//html/Amps/2006-07/msg00573.html (12,447 bytes)
43. Re: [Amps] Life and gain of 3-500Z (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Tue, 18 Jul 2006 19:08:49 -0400; According to the Richardson Electronics Data Sheet for the Amperex 3-500Z, with the heavy graphite anode with the zirconium coating, the amplification factor for the tube is 130 average. Richardson a; /archives//html/Amps/2006-07/msg00606.html (11,366 bytes)
44. Re: [Amps] Life and gain of 3-500Z (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Wed, 19 Jul 2006 11:20:30 -0400; "the opposite is true. Example -- With higher Mu Amperex tubes in a SB-220, the 5V bias zener needs to be shorted (0V) to increase the ZSAC." The published data sheets as per the Richardson , state t; /archives//html/Amps/2006-07/msg00636.html (10,349 bytes)
45. Re: [Amps] Grid fuses (was: Life and gain of 3-500Z) (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Thu, 20 Jul 2006 10:07:14 -0400; Hello Amp Fans: I have experimented with "grid fuse", while investigating grid equalization and trying to eliminate the need for using matched pairs of triodes. I believe what I tried at the time was; /archives//html/Amps/2006-07/msg00666.html (14,605 bytes)
46. Re: [Amps] 3-500Z convertion (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Sun, 23 Jul 2006 10:53:51 -0400; I maybe it careful to _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2006-07/msg00934.html (11,254 bytes)
47. Re: [Amps] 3-500Z convertion (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Mon, 24 Jul 2006 09:15:51 -0400; Hello Hsu: As others have discovered, we can not reply directly to you from the United States. Additionally, my spam filter automatically deleted your email to me, before I could read your message. I; /archives//html/Amps/2006-07/msg01010.html (11,929 bytes)
48. Re: [Amps] 3-500Z convertion (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Mon, 24 Jul 2006 11:07:36 -0400; _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2006-07/msg01021.html (14,790 bytes)
49. Re: [Amps] setting the grid adrift (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Wed, 26 Jul 2006 09:43:57 -0400; All of my early triodes from Cetron were bought factory direct, from Geneva, Illinois, USA. 73, Mike W2AJI -- Original Message -- From: "Peter Chadwick" <g3rzp@g3rzp.wanadoo.co.uk> To: "Tom W8JI" <w8; /archives//html/Amps/2006-07/msg01170.html (8,205 bytes)
50. Re: [Amps] setting the grid adrift (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Wed, 26 Jul 2006 09:49:32 -0400; Today, they are owned by Richardson apparently, see below from a MSDS: Name: CETRON ELECTRONICS DIV RICHARDSON ELECTRONICS LTD Address: 40W267 KESLINGER RD City: LAFOX (FORMALLY IN GEVEVA) IL 60147 I; /archives//html/Amps/2006-07/msg01172.html (8,406 bytes)
51. Re: [Amps] Ameritron Amps (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Sun, 30 Jul 2006 08:10:21 -0400; Please see QRO Technologies for glass tubes made in the USA: HF-2000 SPECIFICATIONS a.. BAND COVERAGE: 160, 80, 40, 20, 17, 15, (12 & 10 EXPORT & USA WITH PROOF OF LICENSE b.. OUTPUT POWER: 800 WATTS; /archives//html/Amps/2006-07/msg01365.html (10,164 bytes)
52. Re: [Amps] Ameritron Amps (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Sun, 30 Jul 2006 21:27:00 -0400; Hi Mike: According to Ray Connin, KB8VU, the HF 2000 is not discontinued, but is not currently on the production line. I do not know when the next run of amps will begin assembly, but I suppose I cou; /archives//html/Amps/2006-07/msg01407.html (10,453 bytes)
53. Re: [Amps] EIMAC vs. SED 3CPX800A7 (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Fri, 25 Aug 2006 17:56:47 -0400; The Eimac 3CPX800A7 is in stock I believe at Penta Laboratories. They are $555 dollars each as I recollect. Here is a point of contact Marianne Griego Domestic Sales Penta Labs 800-421-4219 ext 116 7; /archives//html/Amps/2006-08/msg00662.html (10,301 bytes)
54. Re: [Amps] Filament forces (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Mon, 28 Aug 2006 00:04:20 -0400; As one of those that is interested, and with a wiremaker's perspective, I am under the impression that mechanical stability of the filament, the attachment to its posts or anchor points, had much to; /archives//html/Amps/2006-08/msg00730.html (11,124 bytes)
55. Re: [Amps] Kilovac HC-2 Mounting Nut (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Fri, 15 Sep 2006 08:29:22 -0400; Hello Mike: Try Allen Bond here: http://mgs4u.com/relay.htm or they are available from Gigavac here: http://www.gigavac.com/products/relays/ham/index.htm The GH-1 uses the same mounting hardware from; /archives//html/Amps/2006-09/msg00202.html (8,614 bytes)
56. Re: [Amps] Titan 425 Reflected Power (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Sun, 24 Sep 2006 17:55:40 -0400; Hello Jim: I don't know your Titan exactly, but here are a few things for you to check out. One, using your SWR bridge built into the exciter, while you have a 50 ohm dummy load on the Titan, adjust; /archives//html/Amps/2006-09/msg00294.html (11,114 bytes)
57. Re: [Amps] Glued meters ! (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Wed, 04 Oct 2006 21:00:47 -0400; Command Technologies uses silicon adhesive in several of their amps. While the metering boards are easily removed and replaced, the meters above them would require some additional time to replace, cl; /archives//html/Amps/2006-10/msg00037.html (10,404 bytes)
58. [Amps] Fw: 3CPX vs 3CX tubes (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Fri, 20 Oct 2006 23:11:55 -0400; easily volt and substituted him? _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2006-10/msg00219.html (8,700 bytes)
59. Re: [Amps] Fw: 3CPX vs 3CX tubes (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Sat, 21 Oct 2006 08:13:00 -0400; Well, the input tuning caps were able to reach the new match without any component changes. I never had to resort to turning on the antenna tuner or anything such as that to maintain something very c; /archives//html/Amps/2006-10/msg00225.html (7,723 bytes)
60. Re: [Amps] drill bits (score: 1): Author: "Mike Schatzberg" <cherokeehillfarm@earthlink.net>; Date: Tue, 31 Oct 2006 06:57:21 -0500; A clean solution might be to find a small shop with an EDM machine and let them locate and machine the holes. 73 and Happy DXing, Mike W2AJI -- Original Message -- From: "Peter Chadwick" <g3rzp@g3rzp; /archives//html/Amps/2006-10/msg00322.html (8,278 bytes)

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