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61. [AMPS] Re: Amps Digest V1 #164 (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Thu, 07 Aug 1997 08:00:01 -0500; At 01:28 AM 8/6/97 +0100, you Snip..... There are no chokes in Alpha power supplies. The power transformer is good for 5900 watts input. (The ones with the 20 amp filament winding) There are resistor; /archives//html/Amps/1997-08/msg00056.html (8,444 bytes)
62. [AMPS] Re: Amps Digest V1 #164 (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Thu, 07 Aug 1997 23:47:17 -0500; Thanks, Peter, I stand corrected on the grid-trip on the 77. I have only seen 1 or 2 at flea markets, and never a manual. Too bad they did not continue the circuit in the 77DX/SX models. All this arg; /archives//html/Amps/1997-08/msg00067.html (8,531 bytes)
63. [AMPS] 8877 Grid Dissipation (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Fri, 08 Aug 1997 00:28:12 -0500; The total grid dissipation on a properly loaded 8877 amp running at 4000 volts and loaded to 800 ma plate current is 8.2 watts. Whether the maximum grid dissipation is 20 or 25 watts is not near as i; /archives//html/Amps/1997-08/msg00068.html (8,425 bytes)
64. [AMPS] Unable to Access Amps Archives (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Fri, 08 Aug 1997 19:29:08 -0500; To: <amps@contesting.com> -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@contesting.co; /archives//html/Amps/1997-08/msg00083.html (7,046 bytes)
65. [AMPS] Alpha 77's (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Mon, 11 Aug 1997 00:24:29 -0500; limited Not to worry about the current on the choke. This was an AM rating, I have felt of the B$W 800 after several hours of heavy DX'ing and it is not even warm. The little VHF choke connected to t; /archives//html/Amps/1997-08/msg00097.html (12,050 bytes)
66. [AMPS] 8877 Grid Dissipation (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Mon, 11 Aug 1997 00:35:57 -0500; 55 ma per tube. The tube dissipates 8.2 watts only when the amp is properly loaded and the grid current is 55 ma per tube. (((73))) Phil, K5PC -- FAQ on WWW: http://www.contesting.com/ampfaq.html Sub; /archives//html/Amps/1997-08/msg00098.html (8,097 bytes)
67. [AMPS] Eimac is Rewriting "Care & Feeding" (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Mon, 11 Aug 1997 04:52:34 -0500; At their web site, www.eimac.com/c&f.htm.....Eimac is rewriting "Care and Feeding of Power Grid Tubes." You can follow along with each chapter as it is rewritten, and make comments to them on each to; /archives//html/Amps/1997-08/msg00100.html (6,951 bytes)
68. [AMPS] 8877 Grid Dissipation (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Mon, 11 Aug 1997 08:31:30 -0500; The 55 ma is only the DC component of the total grid current. This allows the use of a simple DC amp meter to sample the TOTAL complex AC, DC, and RF currents flowing in the grid. By following the Ip; /archives//html/Amps/1997-08/msg00105.html (9,085 bytes)
69. [AMPS] 8877 Grid Dissipation (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Tue, 12 Aug 1997 09:49:05 -0500; Please go to www.eimac.com/c&f.htm and read what it says. Too much for me to retype. At a constant current, Ep and Eg vary with time. By plotting along the chart with the operating values we are inte; /archives//html/Amps/1997-08/msg00118.html (8,929 bytes)
70. [AMPS] need help (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Fri, 11 Jul 1997 09:41:13 -0500; Hi, Mike...you need a total of 50 ohms....4-200 ohm or 3 150 ohm in parallel will be fine. (((73))) Phil, K5PC -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Ad; /archives//html/Amps/1997-07/msg00049.html (7,232 bytes)
71. [AMPS] Re: Bent filaments (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Mon, 14 Jul 1997 00:16:57 -0500; snip....... snip...... Hi Tom et al..... IMO the source of the current that bends the filaments is the same source that has sent Ip meters sailing out of their holes and across the room. It is the fi; /archives//html/Amps/1997-07/msg00077.html (9,365 bytes)
72. [AMPS] Splatter and ALC (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Mon, 09 Jun 1997 00:42:30 -0500; snip.... snip..... snip... There was a multi-page article in one of the ham magazines years ago stating that new tubes in a linear amp produce clean, crisp, audio for a period of time...however long; /archives//html/Amps/1997-06/msg00118.html (8,883 bytes)
73. [AMPS] Heath HL-2200 (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Tue, 10 Jun 1997 14:38:27 -0500; MFJ makes a box that you just plug the amp into that does the job. There are models for 120 and 240 volts. No changes to the amp are required, and you can use the MFJ box on future projects. If you w; /archives//html/Amps/1997-06/msg00160.html (7,291 bytes)
74. [AMPS] splatter (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Tue, 10 Jun 1997 18:10:04 -0500; To: <amps@contesting.com> -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@contesting.co; /archives//html/Amps/1997-06/msg00168.html (9,801 bytes)
75. [AMPS] SB-220 (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Wed, 18 Jun 1997 11:52:09 -0500; say Why screw up a near-perfect circuit? The filament transformer is specially designed to be self-limiting on inrush current. The 3-500Z has instant-heat filaments. You are not hurting a thing when; /archives//html/Amps/1997-06/msg00265.html (8,550 bytes)
76. [AMPS] SB-220 (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Thu, 19 Jun 1997 01:26:51 -0500; Everything that happens to a tube after it leaves the factory decreases its life....even sitting on a shelf. (especially sitting with the plate horizontal on a shelf) My experience is that the tube w; /archives//html/Amps/1997-06/msg00277.html (9,647 bytes)
77. [AMPS] SB-220 (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Thu, 19 Jun 1997 11:12:56 -0500; That guy chose the wrong tube for his operating style...had he chosen 3-500Z, 3-1000Z, oe 4-1000A, he would still most likely be on his original set. My comments were strictly limited to the SB-220.; /archives//html/Amps/1997-06/msg00286.html (8,686 bytes)
78. [AMPS] AL-1200 (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Sat, 21 Jun 1997 12:46:57 -0500; Why don't you just add the Ameritron QSK-5 QSK box? It is the same circuit that has been around a long time, (Heath, Vectronics,et al) and is much faster than a vacuum relay. You will enjoy this box; /archives//html/Amps/1997-06/msg00329.html (6,917 bytes)
79. [AMPS] QRO HF2500 x ALPHA89 - some experience [OK1RI] (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Sat, 21 Jun 1997 18:35:49 -0500; At 12:04 AM 1/19/97 +0100, you snip..... thought it is a starting company and they will try hard, I also after a lot of experience do trust to the Russian RF tubes) Here is what happened: january. (3; /archives//html/Amps/1997-06/msg00331.html (9,186 bytes)
80. [AMPS] Clipperton L tuned input (score: 1): Author: philk5pc@connect.net (Phil Clements); Date: Sun, 04 May 1997 20:48:47 -0500; you need is a 2:1 unun. Omega Electronics has the tuned inputs for the Clipperton. They are $149.95 Omega has a catalog featuring parts for Amp Supply, Dentron, Ameritron, and other brands. (800)900-; /archives//html/Amps/1997-05/msg00015.html (7,234 bytes)

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