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1. [Amps] GS-35B (score: 1): Author: nemo zilch <nemozilch@gmail.com>; Date: Sun, 9 Nov 2014 11:14:01 -0500; I have one which I purchased from Dr. Alex. It came with the cooler in a separate box. Does anyone know the recommended torque for the securing nut? Also I am wondering if it would be useful to put s; /archives//html/Amps/2014-11/msg00023.html (6,497 bytes)
2. [Amps] D.C. on filaments of GS-35B? (score: 1): Author: nemo zilch <nemozilch@gmail.com>; Date: Fri, 30 Jan 2015 17:31:50 -0500; Seems to me it would be good to use a dc supply for the filament of the GS35B amp I am building. Easier to build an effective soft start circuit, easy to build the supply. I understand why dc is not; /archives//html/Amps/2015-01/msg00380.html (6,837 bytes)
3. [Amps] GS35B Gassy, or Arcing? (score: 1): Author: nemo zilch <nemozilch@gmail.com>; Date: Wed, 25 Feb 2015 15:39:42 -0500; Hi-pot tested my GS-35B and it breaks down at about 5600 volts at the tube plate. I have a 10 Meg resistor in series going to the tester to limit current. When it breaks down the voltage goes to a fe; /archives//html/Amps/2015-02/msg00140.html (7,522 bytes)
4. Re: [Amps] GS35B Gassy, or Arcing? (score: 1): Author: nemo zilch <nemozilch@gmail.com>; Date: Wed, 25 Feb 2015 18:08:39 -0500; Thanks Mike. Yes I did the online research first and followed what seemed to be the best advice. Brought the filament up to full voltage very slowly in small steps, then let it run for a week and a h; /archives//html/Amps/2015-02/msg00149.html (8,150 bytes)
5. Re: [Amps] Arcing GS-35B (score: 1): Author: nemo zilch <nemozilch@gmail.com>; Date: Wed, 25 Feb 2015 18:14:49 -0500; Thanks Dennis. Yes,I read the ND2X and that's the procedure I used to prepare my tube. Bob W4AOS -- == _______________________________________________ Amps mailing list Amps@contesting.com http://lis; /archives//html/Amps/2015-02/msg00150.html (7,280 bytes)
6. Re: [Amps] GS35B Gassy, or Arcing? (score: 1): Author: nemo zilch <nemozilch@gmail.com>; Date: Thu, 26 Feb 2015 14:34:31 -0500; OK gang. I think the collective wisdom of the group is that my tube has more than average gas and that operating it with plate power is not likely to help due to the location of the getter. So, guess; /archives//html/Amps/2015-02/msg00154.html (8,251 bytes)
7. [Amps] Re GS35B GASSY OR ARCING (score: 1): Author: nemo zilch <nemozilch@gmail.com>; Date: Sun, 1 Mar 2015 10:19:13 -0500; Good news. Dr Alex Gavva is sending me a replacement. He stands behind his tubes and is obviously a good man to deal with. Bob. W4AOS -- == _______________________________________________ Amps mailin; /archives//html/Amps/2015-03/msg00000.html (6,514 bytes)
8. [Amps] Re GS35B Arcing or Gassy (score: 1): Author: nemo zilch <nemozilch@gmail.com>; Date: Thu, 19 Mar 2015 19:00:30 -0400; True to his word Dr. Alex promptly sent me a replacement. Received it last week. I tested it with HV before starting the conditioning process and it looks good. I ran it up to 9000 volts with no sign; /archives//html/Amps/2015-03/msg00044.html (6,955 bytes)
9. Re: [Amps] Ham sells fine grit thing to clean contacts (score: 1): Author: nemo zilch <nemozilch@gmail.com>; Date: Mon, 17 Aug 2015 12:23:43 -0400; I have had good luck with a ladies Sapphire fingernail file, very fine teeth and hard. Not too expensive. Bob -- == _______________________________________________ Amps mailing list Amps@contesting.c; /archives//html/Amps/2015-08/msg00061.html (8,793 bytes)
10. [Amps] Regulated filament current (score: 1): Author: nemo zilch <nemozilch@gmail.com>; Date: Thu, 3 Sep 2015 18:40:30 -0400; I am slowly building an amp for hf using a GS35B. For several reasons I decided to feed the filaments with current regulated d.c. I have the circuit all designed and it regulates well. But the questi; /archives//html/Amps/2015-09/msg00004.html (7,058 bytes)
11. [Amps] GS35B Spice Model (score: 1): Author: nemo zilch <nemozilch@gmail.com>; Date: Thu, 12 May 2016 13:15:47 -0400; Looking for a GS35B spice model. Have searched Internet, none found. Could maybe make my own, but would rather use a known good one. Any help appreciated. -- == ______________________________________; /archives//html/Amps/2016-05/msg00022.html (6,726 bytes)
12. [Amps] MFJ-(AMERITRON) ROLLER INDUCTOR? (score: 1): Author: nemo zilch <nemozilch@gmail.com>; Date: Sat, 24 Sep 2016 13:55:01 -0400; I am going to build an amp using a single GS-35B, 3800 volts, 600mA. I am thinking of using the Ameritron roller inductor sold by MFJ. It is on page 86 of their current catalog. It is edge wound, sil; /archives//html/Amps/2016-09/msg00112.html (7,260 bytes)
13. [Amps] Ameritron/MFJ ROLLER INDUCTOR for GS35b amp (score: 1): Author: nemo zilch <nemozilch@gmail.com>; Date: Thu, 29 Sep 2016 18:00:50 -0400; Well, the replies are pretty close to 50/50 yea and nay. I plan to build a sort of breadboard of the basic amp to test cooling, rf choke, fil choke and tank, etc. So I think I'll chance it and invest; /archives//html/Amps/2016-10/msg00004.html (8,182 bytes)
14. Re: [Amps] Amps Digest, Vol 244, Issue 3 (score: 1): Author: nemo zilch <nemozilch@gmail.com>; Date: Sat, 1 Apr 2023 22:35:47 -0400; 5 Volts times 10 Amps equals 50 Watts. Assuming your measurements are correct, something in that tube is producing 50 Watts worth of heat. That is not a great of deal of heat, about 20% less than an; /archives//html/Amps/2023-04/msg00011.html (16,222 bytes)
15. Re: [Amps] Amps Digest, Vol 261, Issue 7 (score: 1): Author: nemo zilch <nemozilch@gmail.com>; Date: Sun, 22 Sep 2024 05:14:45 -0400; I'm unsubscribing. Too many threads on here showing someone building illegal amps. I've been a ham since 1952, always built my own amps. My blood pressure goes up too much nowadays when I see some on; /archives//html/Amps/2024-09/msg00019.html (13,593 bytes)

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