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81. Re: [Amps] Band switching (score: 1): Author: PA3DUV <pa3duv@planet.nl>; Date: Sat, 11 Mar 2006 15:03:52 +0100; Jos, Check out: http://www.qsl.net/g4ftc/amplifiers/8170/8170_construction/8170_construction.htm This gentleman (g4ftc) has some very interesting pages on construction and engineering considerations; /archives//html/Amps/2006-03/msg00269.html (7,533 bytes)
82. Re: [Amps] HV switching power supplys? (score: 1): Author: PA3DUV <pa3duv@planet.nl>; Date: Sun, 19 Mar 2006 21:25:15 +0100; This is perhaps an interesting link. http://wattsunlimited.com/index.html Too bad this unit is limited to 3 kW output only. Regulation could be better too. Cheers, Dick PA3DUV -- Original Message --; /archives//html/Amps/2006-03/msg00547.html (8,954 bytes)
83. Re: [Amps] SS vs. Tubes (score: 1): Author: PA3DUV <pa3duv@planet.nl>; Date: Wed, 29 Mar 2006 22:41:01 +0200; In terms of costs, watts per pound ratio and power efficiency the 1.5 kW++++ tube amp still wins hands down from the solid state amps. The only advantage of a multiple module solid state amp seems th; /archives//html/Amps/2006-03/msg00754.html (9,384 bytes)
84. Re: [Amps] Paypal only (score: 1): Author: PA3DUV <pa3duv@planet.nl>; Date: Thu, 13 Apr 2006 07:34:59 +0200; Jim, I cannot agree more. On all my amplifier deals over the last years I used Paypal, either as a seller or buyer. I am happy to pay the fees as the reward is a safe and fast money transfer AND the; /archives//html/Amps/2006-04/msg00212.html (9,425 bytes)
85. Re: [Amps] Paypal only (score: 1): Author: PA3DUV <pa3duv@planet.nl>; Date: Thu, 13 Apr 2006 10:58:59 +0200; Hi Will, Nice try but I won't bite. We learned that debating technique in secondary school. Read my text again please. Cheers, Dick. PA3DUV _______________________________________________ Amps mailin; /archives//html/Amps/2006-04/msg00216.html (11,673 bytes)
86. Re: [Amps] Paypal only (score: 1): Author: PA3DUV <pa3duv@planet.nl>; Date: Thu, 13 Apr 2006 15:16:27 +0200; Also I did never buy any amplifiers or parts from sellers who conceal their identity and/or use anonymous freebee e-mail adresses. Cheers, Dick PA3DUV _______________________________________________; /archives//html/Amps/2006-04/msg00221.html (12,839 bytes)
87. Re: [Amps] Paypal only (score: 1): Author: PA3DUV <pa3duv@planet.nl>; Date: Thu, 13 Apr 2006 16:51:25 +0200; Concar, My buddy told me that the GU78 was "erste Sahne" and he is very happy with it @ 3 kW output. Was is a pull or a NOS? Cheers, Dick PA3DUV _______________________________________________ Amps m; /archives//html/Amps/2006-04/msg00225.html (9,959 bytes)
88. Re: [Amps] working backwards to setup tank (score: 1): Author: PA3DUV <pa3duv@planet.nl>; Date: Tue, 18 Apr 2006 23:38:34 +0200; Is the MFJ analyzer still ok? Mine went bust after 3 months, could not handle strong RF radiation even when off and not coupled to any circuit. I trashed it and purchased a Palstar ZM30. In use now f; /archives//html/Amps/2006-04/msg00288.html (8,086 bytes)
89. [Amps] Fw: Henry 8K (score: 1): Author: PA3DUV <pa3duv@planet.nl>; Date: Wed, 17 May 2006 00:12:07 +0200; Headroom Gentlemen, headroom. That's what it's all about.... Cheers, Dick PA3DUV _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mail; /archives//html/Amps/2006-05/msg00150.html (7,878 bytes)
90. [Amps] Fw: Henry 8K (score: 1): Author: PA3DUV <pa3duv@planet.nl>; Date: Wed, 17 May 2006 00:12:34 +0200; On Jamaica some extra smoke is always welcome. Just don't inhale :-) Cheers, Dick PA3DUV -- Original Message -- _______________________________________________ Amps mailing list Amps@contesting.com h; /archives//html/Amps/2006-05/msg00151.html (8,366 bytes)
91. Re: [Amps] Fw: Henry 8K (score: 1): Author: PA3DUV <pa3duv@planet.nl>; Date: Wed, 17 May 2006 08:13:22 +0200; I prefer 60 watts drive into the Emtron DX4 :-) Cheers, Dick PA3DUV If everyone ran Henry 8K´s and just would use 100W drive our ham bands would sound wounderful, instead we have the present si; /archives//html/Amps/2006-05/msg00176.html (7,469 bytes)
92. Re: [Amps] Henry 8K (score: 1): Author: PA3DUV <pa3duv@planet.nl>; Date: Wed, 17 May 2006 17:59:59 +0200; I would put my money on the guy with the 4 square, beverages and 10 kW! Cheers, Dick PA3DUV _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesti; /archives//html/Amps/2006-05/msg00190.html (9,874 bytes)
93. Re: [Amps] One GS-35B or two? (score: 1): Author: PA3DUV <pa3duv@planet.nl>; Date: Wed, 17 May 2006 21:22:08 +0200; My 2 x GU84B's feel more happy together. So does the owner of the amp :-) Cheers, Dick PA3DUV _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contes; /archives//html/Amps/2006-05/msg00200.html (9,046 bytes)
94. Re: [Amps] Henry 8K (score: 1): Author: pa3duv@planet.nl; Date: Wed, 17 May 2006 22:20:44 +0000 (GMT); The poll on used output power levels by the members of the http://groups.yahoo.com/group/emtrondx15 gave the following outcome kW % 0-1 11 1-2 53 2-4 19 4-8 11 8-16 3 Cheers, Dick PA3DUV -- Oorspronk; /archives//html/Amps/2006-05/msg00209.html (8,939 bytes)
95. Re: [Amps] RE : who needs it? Henry 8K (score: 1): Author: "PA3DUV" <pa3duv@planet.nl>; Date: Sat, 20 May 2006 15:13:39 +0200; We do not know Will. The output power steps were 3 db up, so it could be anything between 8 and 16 kW 3 dB steps were chosen due to the advice of very experienced members of this forum who say that; /archives//html/Amps/2006-05/msg00254.html (11,930 bytes)
96. Re: [Amps] multi-tube amplifiers (score: 1): Author: PA3DUV <pa3duv@planet.nl>; Date: Fri, 26 May 2006 16:04:20 +0200; @ 5 kW plate dissipation a twin GU84B will be more capable than a quattro GU74B amp. 2 x GU84B can be had for approx Euro 220.-, 4 x GU74B @ Euro 240.- With approx loaded 3000 V B+ no vacuum caps are; /archives//html/Amps/2006-05/msg00375.html (10,609 bytes)
97. Re: [Amps] Quad Tube 4cx800 hf amp (score: 1): Author: PA3DUV <pa3duv@planet.nl>; Date: Sat, 27 May 2006 20:15:10 +0200; Another way to reduce power is to work the operate/standby switch of the amp. In 99% the approx 60 watt from my exciter are sufficient to establish or maintain communications. However, when needed a; /archives//html/Amps/2006-05/msg00424.html (11,116 bytes)
98. [Amps] twin 4CX-10 000D amplifier: multiple tubes (score: 1): Author: PA3DUV <pa3duv@planet.nl>; Date: Sun, 28 May 2006 22:06:57 +0200; Gentlemen, For those interested in the design of HF power amplifiers this web page might be of interest: http://66.249.93.104/translate_c?hl=en&ie=UTF-8&oe=UTF-8&langpair=ja%7Cen&u=http://www.iizuka-; /archives//html/Amps/2006-05/msg00453.html (7,698 bytes)
99. Re: [Amps] twin 4CX-10 000D amplifier: multiple tubes (score: 1): Author: PA3DUV <pa3duv@planet.nl>; Date: Mon, 29 May 2006 22:06:13 +0200; Rich, For the single bander they might get away with it. But I've seen multiband designs of the same origin which catched fire due to oscillation of the amp. Cheers, Dick PA3DUV _____________________; /archives//html/Amps/2006-05/msg00491.html (9,574 bytes)
100. Re: [Amps] new power transistor TSPA (score: 1): Author: PA3DUV <pa3duv@planet.nl>; Date: Wed, 31 May 2006 19:12:21 +0200; John, I have some EU 230V single phase wall outlets left over which you can have since I threw out these outlets in my garage and replaced them for two 5 pole three phase 400 V outlets. My MIG-welder; /archives//html/Amps/2006-05/msg00565.html (8,798 bytes)

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