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1. [Amps] 3cpx5000a7 (score: 1): Author: "Larry Carman" <lncarman@swbell.net>; Date: Sun, 21 Mar 2004 05:37:24 -0600; I'm sure there's been some talk about the 3cpx5000 tubes that I've missed. I built a amp using this tube for 20 through 80 mtrs. Why isn't this a more popular tube with hams since there are many pull; /archives//html/Amps/2004-03/msg00227.html (7,163 bytes)
2. [Amps] 3cpx5000 responses (score: 1): Author: "Larry Carman" <lncarman@swbell.net>; Date: Mon, 22 Mar 2004 08:27:23 -0600; I believe K7RDX is correct to a large extent when he stated that the 3cpx5000 isn't used more for amateur service because of the warm up time, which is 6 minutes min for the 3cpx5000. That is the rea; /archives//html/Amps/2004-03/msg00244.html (7,703 bytes)
3. Re: [Amps] Relays for RF switching (score: 1): Author: "Larry Carman" <lncarman@swbell.net>; Date: Sat, 17 Apr 2004 09:38:06 -0500; Vic, I built an antenna switch box using DPDT 10 amp contacts. The coils were 115 volt. I paralleled the contacts for 20 amps each. The SWR did increase slightly but hardly noticeable. These relays c; /archives//html/Amps/2004-04/msg00105.html (11,450 bytes)
4. Re: [Amps] 12 tuber (score: 1): Author: "Larry Carman" <lncarman@swbell.net>; Date: Mon, 24 May 2004 15:51:12 -0500; Click on this link to see it: http://search.ebay.com/12-tuber_W0QQfromZR8QQsokeywordredirectZ1 Larry N5BIP _______________________________________________ Amps mailing list Amps@contesting.com http:/; /archives//html/Amps/2004-05/msg00219.html (7,100 bytes)
5. Re: [Amps] Note on paralelling transformers (score: 1): Author: "Larry Carman" <lncarman@swbell.net>; Date: Tue, 25 May 2004 10:05:53 -0500; My last amp project ( 3cpx5000a7 ) required a pretty hefty PS. I used a couple of the transformers that were pulls from the Henry RF gens running the 3cx3000a7 tube. On the secondary of each transfor; /archives//html/Amps/2004-05/msg00228.html (10,393 bytes)
6. Re: [Amps] Note on paralelling transformers (score: 1): Author: "Larry Carman" <lncarman@swbell.net>; Date: Wed, 26 May 2004 12:28:25 -0500; William, I could have sworn that the part #s were the same on the HV PS transformers I pulled from the 2k and 3k D Henrys. Maybe there were some alterations in the unit/s at some point along the way.; /archives//html/Amps/2004-05/msg00240.html (13,934 bytes)
7. [Amps] Dayton Blower Specs (score: 1): Author: "Larry Carman" <lncarman@swbell.net>; Date: Fri, 28 May 2004 07:32:59 -0500; I can't find a spec sheet on the Dayton Model 4CO06B Blower. Anyone that can help me out? It says 115 Volts at 2200 RPM and 1/40 HP. Any educated guesses at the CFM / back pressure? Regards, Larry N5; /archives//html/Amps/2004-05/msg00252.html (6,850 bytes)
8. Re: [AMPS] Dayton Blower Specs (score: 1): Author: "Larry Carman" <lncarman@swbell.net>; Date: Sat, 29 May 2004 19:21:25 -0500; A big thanks to all of you who helped find the info on the Dayton Blower. You are very much appreciated. Regards, Larry N5BIP _______________________________________________ Amps mailing list Amps@co; /archives//html/Amps/2004-05/msg00267.html (6,787 bytes)
9. Re: [Amps] YC-156 IMD characteristics (score: 1): Author: "Larry Carman" <lncarman@swbell.net>; Date: Thu, 10 Jun 2004 11:28:42 -0500; Hi Conrad, Try out Hank's website at http://www.angelfire.com/darkside/rfbox/ . He has build a very nice Y156 3cpx5000a7 amp and posted lots of info on his site. Larry N5BIP B. ______________________; /archives//html/Amps/2004-06/msg00063.html (7,503 bytes)
10. Re: [Amps] AL-1200 Pop (score: 1): Author: "Larry Carman" <lncarman@swbell.net>; Date: Sat, 10 Jul 2004 09:43:25 -0500; Why would you want to prevent a device from performing multiple task, especially one it wasn't designed for. An amplifier sufficing as a bug zapper sounds fun. With the lights turned out and bugs swa; /archives//html/Amps/2004-07/msg00050.html (9,404 bytes)
11. Re: [Amps] 3CX1000A7 question (score: 1): Author: Larry Carman <lncarman@swbell.net>; Date: 25 Jul 2004 10:36:49 -0500; I'd like to see the the test results of the 3cx1000a7 for both tuned input and no tuned input. I thought the IMD carry over was small ( considering the Q of the tank circuit ) when not using a tuned; /archives//html/Amps/2004-07/msg00219.html (9,098 bytes)
12. [AMPS] ZNR Transient/Surge Absorber (score: 1): Author: Larry Carman <lncarman@swbell.net>; Date: 30 Jul 2004 11:26:42 -0500; Can anyone tell me what the specs are for the ZNR 25EK201. This is out of a Hernry 2500 watt RF gen PS. Larry N5BIP _______________________________________________ Amps mailing list Amps@contesting.c; /archives//html/Amps/2004-07/msg00242.html (6,590 bytes)
13. [Amps] HV PS chokes to give away (score: 1): Author: "Larry Carman" <lncarman@swbell.net>; Date: Wed, 11 Aug 2004 09:30:34 -0500; Hi Everyone, I have a couple of HV power supply chokes that were removed from the Henry 2500 watt RF gens running the 3cx3000a7 tube. I believe the power supply delivered about 4000 volts at 1 amp. T; /archives//html/Amps/2004-08/msg00099.html (9,633 bytes)
14. [AMPS] HV PS chokes are gone. New owner to pick them up. (score: 1): Author: "Larry Carman" <lncarman@swbell.net>; Date: Thu, 12 Aug 2004 00:30:20 -0700; The HV chokes have been given away. I'll post another give away when I get more of the chokes. Good day to all, Larry N5BIP _______________________________________________ Amps mailing list Amps@cont; /archives//html/Amps/2004-08/msg00111.html (6,632 bytes)
15. Re: [Amps] 20kw Dummy load? (score: 1): Author: Larry Carman <lncarman@swbell.net>; Date: 15 Aug 2004 06:15:30 -0500; Frank wont need to book a flight. When the final amp blows, the lobsters may be served at his home QTH as well as many others. Oh, by the way, what kind of bear do they drink in the 'down under'? Reg; /archives//html/Amps/2004-08/msg00133.html (9,331 bytes)
16. [AMPS] Carborrundum Resistors (score: 1): Author: Larry Carman <lncarman@swbell.net>; Date: 15 Aug 2004 06:30:58 -0500; I have ten 890 AS carborrundum resistors. They are supposed to be 330 ohms 5% but they measure 400 to 500 ohms. Is it the norm that these resistors change that much with age? Are they still ok to use; /archives//html/Amps/2004-08/msg00134.html (6,671 bytes)
17. [AMPS] 4-400 tubes in a Centurion (score: 1): Author: "Larry Carman" <lncarman@swbell.net>; Date: Tue, 24 Aug 2004 11:27:21 -0700; Anyone tried the 4-400 tubes in a Ten-Tec Centurion? Any mods required? Larry N5BIP _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/m; /archives//html/Amps/2004-08/msg00284.html (6,460 bytes)
18. Re: [Amps] QRO Website (score: 1): Author: "lncarman SWBELL" <lncarman@swbell.net>; Date: Wed, 8 Sep 2004 08:11:42 -0500; Will, There's a great tool for displaying a website's pictures which is also easy to use. It's called Jalbum ( www.jalbum.net ) and is a free distribution. Thanks to David Ekholm for writing the code; /archives//html/Amps/2004-09/msg00170.html (11,036 bytes)
19. Re: [Amps] Panasonic tube radio (score: 1): Author: "lncarman" <lncarman@swbell.net>; Date: Sat, 11 Sep 2004 14:05:27 -0500; I have to agree with you Rob. Seems to me that a lot of your modern SS stuff is RF prong. Almost all the computer audio systems are affected when subject to strong RF. There's lots of the cheaper AM/; /archives//html/Amps/2004-09/msg00204.html (10,218 bytes)
20. [AMPS] floating a filament transformer (score: 1): Author: "lncarman" <lncarman@swbell.net>; Date: Thu, 16 Sep 2004 07:22:44 -0500; I've heard over the years of some amp builders floating the filament transformer. I was told that you isolate the filament transformer from ground and add two chokes in the primary side with bypassin; /archives//html/Amps/2004-09/msg00274.html (6,593 bytes)

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