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1. [Amps] 4CX10 000J (score: 1): Author: pa3duv <pa3duv@planet.nl>; Date: Sun, 02 Jul 2006 09:29:04 +0000; Fo those working on a QRO project; Allen Bond from Max Gain Systems has some NOS 4CX10000J tetrodes for sale. Cheers, Dick PA3DUV _______________________________________________ Amps mailing list Amp; /archives//html/Amps/2006-07/msg00036.html (6,216 bytes)
2. Re: [Amps] 4CX10 000J (score: 1): Author: "Joe Subich, W4TV" <w4tv@subich.com>; Date: Sun, 2 Jul 2006 10:44:13 -0400; What are the differences between the 4CX1000J and 4CX10000D - particularly to explain the 10 KW vs. 15 KW output difference in the "normal operation" figures on the Eimac short form catalog (www.cpii; /archives//html/Amps/2006-07/msg00050.html (7,657 bytes)
3. Re: [Amps] 4CX10 000J (score: 1): Author: "Peter Voelpel" <df3kv@t-online.de>; Date: Sun, 2 Jul 2006 17:02:26 +0200; All the J-types are low distortion, gain of both is about 20db 73 Peter, DF3KV --Original Message-- From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On Behalf Of Joe Subich, W4T; /archives//html/Amps/2006-07/msg00051.html (7,837 bytes)
4. Re: [Amps] 4CX10 000J (score: 1): Author: "Dr. David Kirkby" <david.kirkby@onetel.net>; Date: Sun, 02 Jul 2006 16:04:33 +0100; I assume you mean 4CX10000J and not 4CX1000J. Data sheets for these tubes can be found here. http://www.g8wrb.org/data/Eimac/4CX10000D.pdf http://www.g8wrb.org/data/Eimac/4CX10000J.pdf -- Dr. David K; /archives//html/Amps/2006-07/msg00053.html (9,145 bytes)
5. Re: [Amps] 4CX10 000J (score: 1): Author: "Joe Subich, W4TV" <w4tv@subich.com>; Date: Sun, 2 Jul 2006 11:37:36 -0400; Thank you, Peter. Interesting ... the Eimac "short form' catalog shows the gain to be 4.5. 20 dB would, indeed, be worthwhile - particularly with an FT-1000D or Mark V available as a driver. Their "c; /archives//html/Amps/2006-07/msg00055.html (8,676 bytes)
6. Re: [Amps] 4CX10 000J (score: 1): Author: Jan Erik Holm <sm2ekm@telia.com>; Date: Sun, 02 Jul 2006 17:55:27 +0200; surely no ham would use a thing like that, or? / Jim SM2EKM -- _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2006-07/msg00056.html (7,476 bytes)
7. Re: [Amps] 4CX10 000J (score: 1): Author: "Peter Voelpel" <df3kv@t-online.de>; Date: Sun, 2 Jul 2006 18:27:18 +0200; Why not, if you don´t bother the power bill you can easily achieve a super clean legal limit signal which will be much better then any ham linear. Of course it needs to be be driven by a transm; /archives//html/Amps/2006-07/msg00058.html (8,648 bytes)
8. Re: [Amps] 4CX10 000J (score: 1): Author: Karl-Arne Markström <sm0aom@telia.com>; Date: Sun, 2 Jul 2006 19:08:22 +0200; There are a few of the early Collins 208U-10's in the hands of radio amateurs... 10 - 12 kW PEP or CW, with IM3 at least 36 dB down from one tone, assumíng a very good exciter and correctly ad; /archives//html/Amps/2006-07/msg00059.html (10,908 bytes)
9. Re: [Amps] 4CX10 000J (score: 1): Author: zdtech <zdtech@iprimus.com.au>; Date: Mon, 03 Jul 2006 14:30:43 +1000; Whats interesting is that if you look at the Eimac published data on the 4CX10000D running at 1350 volts on the screen, the 3rd order IMD figure is close or equal to the 4CX10000J's. This data comes; /archives//html/Amps/2006-07/msg00067.html (9,284 bytes)
10. Re: [Amps] 4CX10 000J (score: 1): Author: R L Measures <r@somis.org>; Date: Sun, 2 Jul 2006 21:26:58 -0700; Joe -- For linear operation, the D has an emission ability of c. 13A- pk, and the J's has c. 18A-pk. The J is almost an 8281 / 4CX15,000A. The D's filament requires 7.5V @ 75A and the J's requires 7.; /archives//html/Amps/2006-07/msg00070.html (9,610 bytes)
11. Re: [Amps] 4CX10 000J (score: 1): Author: Jan Erik Holm <sm2ekm@telia.com>; Date: Mon, 03 Jul 2006 08:25:39 +0200; Well, if I´m going to use almost a KW just to heat the tube I certainly wouldn´t run just a measly 1 KW of RF power. I would use the tube to more or less it´s full potential! That&a; /archives//html/Amps/2006-07/msg00071.html (10,080 bytes)
12. Re: [Amps] 4CX10 000J (score: 1): Author: Mark Hill <g4fph@mjha.co.uk>; Date: Mon, 03 Jul 2006 09:24:24 +0100; Craig, Surely, for purity and on SSB, a Yaesu FT-1000MP Mk-V with th PA set to class 'A' would not insult too much?! Is the Rockwell even better? Regards. Mark. ** Mark Hill - G4FPH E-mail: g4fph@mjh; /archives//html/Amps/2006-07/msg00076.html (10,913 bytes)
13. Re: [Amps] 4CX10 000J (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Mon, 3 Jul 2006 06:55:43 -0400; Most amateur transceivers are in the -30dB PEP range for low odd-order IM products. Even without ALC operation they aren't very good. With ALC they can be worse, but the duration of ALC "spits" is v; /archives//html/Amps/2006-07/msg00084.html (9,630 bytes)
14. Re: [Amps] 4CX10 000J (score: 1): Author: R L Measures <r@somis.org>; Date: Mon, 3 Jul 2006 04:19:51 -0700; In the winter, a 1kW filament makes a pretty good room heater, and to quickly de-ice the room, there's the 5kW of ZSAC. R L MEASURES, AG6K. 805-386-3734 r@somis.org __________________________________; /archives//html/Amps/2006-07/msg00094.html (11,946 bytes)
15. Re: [Amps] 4CX10 000J (score: 1): Author: Vic K2VCO <vic@rakefet.com>; Date: Mon, 03 Jul 2006 07:52:38 -0700; This is apparently a problem with most or all modern transceivers. On our annual field day my club operates a CW and an SSB station. We use switched bandpass filters on both rigs and do our best to s; /archives//html/Amps/2006-07/msg00108.html (9,193 bytes)

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