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41. Re: [Amps] Grid driven Multi-band amp using 4-1000 (score: 1): Author: Jan Erik Holm <sm2ekm@telia.com>; Date: Wed, 19 Jan 2005 20:07:23 +0100; This is interesting! I´m going to play with it a bit myself. Tnx for info on LTspice, I didn´t know about it. 73 SM2EKM -- Steven J Fraasch wrote: Will: There was also a lot of junk desig; /archives//html/Amps/2005-01/msg00378.html (8,983 bytes)
42. Re: [Amps] Want to build first amp (score: 1): Author: Jan Erik Holm <sm2ekm@telia.com>; Date: Thu, 20 Jan 2005 08:32:14 +0100; GS35b costs MUCH less then 8877´s or 3CX1200 tubes. For a 160-6m amp I would try a GS35b any day. 73 Jim SM2EKM -- Steven J Fraasch wrote: Tomm: If it was your first, given your gain requiremen; /archives//html/Amps/2005-01/msg00393.html (10,012 bytes)
43. Re: [Amps] Grid driven Multi-band amp using 4-1000 (score: 1): Author: Jan Erik Holm <sm2ekm@telia.com>; Date: Thu, 20 Jan 2005 08:43:11 +0100; Gain in GG depends on plate voltage and drive power. If we use the example below 8171 can give 15 dB gain. That is way more then 12% of full output for the tube. EIMAC states about 16 kW max output i; /archives//html/Amps/2005-01/msg00394.html (10,512 bytes)
44. Re: [Amps] Want to build first amp (score: 1): Author: Jan Erik Holm <sm2ekm@telia.com>; Date: Thu, 20 Jan 2005 17:30:28 +0100; Yes 6-160 is a tall order! 10-160 could at times be enough of a problem. 73 gl with the amps / Jim SM2EKM -- Tony King - W4ZT wrote: Ian White, G3SEK wrote: Jan Erik Holm wrote: GS35b costs MUCH less; /archives//html/Amps/2005-01/msg00400.html (9,377 bytes)
45. Re: [Amps] 10dB and propagation (score: 1): Author: Jan Erik Holm <sm2ekm@telia.com>; Date: Tue, 08 Feb 2005 19:46:41 +0100; Yes that´s the driver for the extra 10 dB!! 73 Jim SM2EKM -- Mark Hill wrote: Folks, Say, did somebody here mention amplifiers recently? Anybody? Please! I'm sure I can see a nice, cherry red 3; /archives//html/Amps/2005-02/msg00314.html (8,969 bytes)
46. Re: [Amps] 3-1000Z Filament Voltage Question (score: 1): Author: Jan Erik Holm <sm2ekm@telia.com>; Date: Sat, 19 Feb 2005 20:31:24 +0100; 0.007 percent out of spec. Measured on what? When was your instrument calibrated last time? 73 SM2EKM -- _______________________________________________ Amps mailing list Amps@contesting.com http://l; /archives//html/Amps/2005-02/msg00601.html (8,594 bytes)
47. Re: [Amps] Water cooled amp question (score: 1): Author: Jan Erik Holm <sm2ekm@telia.com>; Date: Fri, 04 Mar 2005 19:22:53 +0100; Go to the automobile junk yard. Get a radiator from some small car (Saab, Peugot, Opel or what ever), also get the fan that usually is thermostate controlled, a small aquarium pump, some rubber hosin; /archives//html/Amps/2005-03/msg00060.html (10,071 bytes)
48. Re: [Amps] 4CX1000A for SSB?? (score: 1): Author: Jan Erik Holm <sm2ekm@telia.com>; Date: Thu, 24 Mar 2005 20:20:33 +0100; I sample 10 sec´s and use 200 Hz BW. It is really interesting to see how bad some radios are that way. Some 100W radios using 12-16V final transistors really shouldn´t be run at more then; /archives//html/Amps/2005-03/msg00546.html (8,710 bytes)
49. Re: [Amps] Alpha releases New Amp 9500 (score: 1): Author: Jan Erik Holm <sm2ekm@telia.com>; Date: Sun, 18 Sep 2005 07:33:14 +0200; How long does it take? 73 SM2EKM _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2005-09/msg00197.html (8,247 bytes)
50. Re: [Amps] Chinese parts (score: 1): Author: Jan Erik Holm <sm2ekm@telia.com>; Date: Thu, 06 Oct 2005 08:39:29 +0200; Gee $19.50 for 572B and $10.80 6146B. One can wounder if this stuff is any good. Has anyone here ordered anything from them? 73 Jim SM2EKM -- _______________________________________________ Amps mail; /archives//html/Amps/2005-10/msg00152.html (6,879 bytes)
51. Re: [Amps] IC 723 bias in Solid State linear. (score: 1): Author: Jan Erik Holm <sm2ekm@telia.com>; Date: Mon, 17 Oct 2005 07:45:49 +0200; http://www.ifwtech.co.uk/g3sek/tr-bias/tr-bias1.htm _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2005-10/msg00431.html (7,107 bytes)
52. Re: [Amps] twin 4CX10 000D RF amps and more (score: 1): Author: Jan Erik Holm <sm2ekm@telia.com>; Date: Tue, 25 Oct 2005 18:28:17 +0200; Yes it´s pegging the Bird 10 kW slug, well that can be done with a single tube also. 73 SM2EKM _______________________________________________ Amps mailing list Amps@contesting.com http://lists; /archives//html/Amps/2005-10/msg00573.html (7,428 bytes)
53. Re: [Amps] twin 4CX10 000D RF amps and more (score: 1): Author: Jan Erik Holm <sm2ekm@telia.com>; Date: Tue, 25 Oct 2005 21:29:39 +0200; There is a picture of the cover lid with two chimneys, or sort of. Blowers are below the chassie plate, air comes up thru the sockets and the whole thing gets preasurized, air escapes thru anode cool; /archives//html/Amps/2005-10/msg00579.html (7,678 bytes)
54. Re: [Amps] Anode Impedance of 4-400A (score: 1): Author: Jan Erik Holm <sm2ekm@telia.com>; Date: Wed, 16 Nov 2005 06:00:19 +0100; I would figure AB2 instead. I´ve yet have to see a ham stay within AB1 with his amplifier. Also, this guy had the ARRL handbook, you can find all of this in that 1982 ARRL handbook. 73 Jim SM2E; /archives//html/Amps/2005-11/msg00225.html (8,419 bytes)
55. Re: [Amps] SB-200 on WARC (score: 1): Author: Jan Erik Holm <sm2ekm@telia.com>; Date: Wed, 23 Nov 2005 18:21:02 +0100; The input networks are only for 10-15-20-40-80m bands. 73 Jim -- _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amp; /archives//html/Amps/2005-11/msg00461.html (7,690 bytes)
56. Re: [Amps] sb200 warc bands (score: 1): Author: Jan Erik Holm <sm2ekm@telia.com>; Date: Wed, 23 Nov 2005 19:36:27 +0100; 90W drive is too much for a SB-200. Great chance you will make splatter. 73 Jim _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailm; /archives//html/Amps/2005-11/msg00466.html (7,023 bytes)
57. Re: [Amps] Designing the Cleanest Linear with RF Negative Feedback (score: 1): Author: Jan Erik Holm <sm2ekm@telia.com>; Date: Wed, 14 Dec 2005 19:09:36 +0100; Tom, Sounds smart. Forexample the old Collins 204C-1 amplifier first has a 4CX250B in Class A that drives a 4CX250B in clas AB1 that drives a 4CX5000 in AB1, I bet that thing would show pritty good n; /archives//html/Amps/2005-12/msg00163.html (9,725 bytes)
58. Re: [Amps] color in tubes (score: 1): Author: Jan Erik Holm <sm2ekm@telia.com>; Date: Sat, 31 Dec 2005 21:32:25 +0100; No no, it´s called being color blind! Happy New year / Jim -- _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/; /archives//html/Amps/2005-12/msg00408.html (7,040 bytes)
59. Re: [Amps] How about this furnace? (score: 1): Author: Jan Erik Holm <sm2ekm@telia.com>; Date: Mon, 02 Jan 2006 20:14:27 +0100; Homes. 73 Jim _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2006-01/msg00095.html (8,406 bytes)
60. Re: [Amps] ANOTHER FURNACE! (score: 1): Author: Jan Erik Holm <sm2ekm@telia.com>; Date: Mon, 02 Jan 2006 20:35:41 +0100; The fellow got two of them, auto-tune and all. Nice for SO2R contesting! I better buy them. 73 Jim -- _______________________________________________ Amps mailing list Amps@contesting.com http://list; /archives//html/Amps/2006-01/msg00097.html (8,857 bytes)

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