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1. [AMPS] SB-220: Operate/Standby Switch (score: 1): Author: billp@wwpc.com (Bill Putney); Date: Thu, 1 Feb 2001 14:07:53 -0800 (PST); Eric, My Henry 2KD-2 doesn't have a standby switch either. Also the relay driver in my exciter is a transistor which would marginally drive the keying relay in the PA. I solved the problem by getting; /archives//html/Amps/2001-02/msg00038.html (11,097 bytes)
2. [AMPS] SB-220: Operate/Standby Switch (score: 1): Author: billp@wwpc.com (Bill Putney); Date: Fri, 2 Feb 2001 10:01:36 -0800 (PST); One last comment on this subject. I can appreciate the hot switching problem but the reason I put up with a little longer pickup delay is that the keying transistor in my exciter would not quite driv; /archives//html/Amps/2001-02/msg00064.html (12,400 bytes)
3. [AMPS] SB-220: Operate/Standby Switch (score: 1): Author: billp@wwpc.com (Bill Putney); Date: Fri, 2 Feb 2001 10:03:41 -0800 (PST); The box I got for this project is dimentonally transendental... It's bigger on the inside than it is on the outside. - Bill -- == == -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amp; /archives//html/Amps/2001-02/msg00065.html (10,488 bytes)
4. [AMPS] Care and Feeding of fragile egos (score: 1): Author: billp@wwpc.com (Bill Putney); Date: Tue, 9 Jan 2001 09:41:54 -0800 (PST); I like the windows pop up boxes that say things like "All the work you have been doing for the last 4 hours is going to be trashed..." [OK?] Where's the [It's Not OK] button? - Bill -- == == -- FAQ o; /archives//html/Amps/2001-01/msg00321.html (11,014 bytes)
5. [AMPS] Blown TL922A... What to do? (score: 1): Author: billp@wwpc.com (Bill Putney); Date: Wed, 13 Sep 2000 16:24:56 -0700 (PDT); Anyone for a "Blown-TL922A@contesting.com" mail reflector? ;) - Bill -- == == -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQUEST@; /archives//html/Amps/2000-09/msg00659.html (9,476 bytes)
6. [AMPS] Schematic for National NCL-2000? (score: 1): Author: billp@wwpc.com (Bill Putney); Date: Fri, 2 Jun 2000 11:45:00 -0700 (PDT); I found a broken National NCL-2000 cheap. I'm wondering if anyone on the list has a schematic for this puppy. Scanned and e-mailed would be great. It's marked "Bad plate relay". Makes me wonder if th; /archives//html/Amps/2000-06/msg00011.html (8,361 bytes)
7. [AMPS] Schematic for National NCL-2000? (score: 1): Author: billp@wwpc.com (Bill Putney); Date: Fri, 2 Jun 2000 16:20:33 -0700 (PDT); Phil, Thnaks, that's good to know. I priced matched pairs form a commercial source and they wanted $500 for a pair with low milage. - Bill -- == == -- FAQ on WWW: http://www.contesting.com/FAQ/amps S; /archives//html/Amps/2000-06/msg00015.html (7,601 bytes)
8. [AMPS] AGREE WITH PETE (score: 1): Author: billp@wwpc.com (Bill Putney); Date: Tue, 6 Jun 2000 09:39:42 -0700 (PDT); I understand that a lot of buy/sell's can be a distraction but it's nice to have a place that a lot of like minded people can share resources of all kinds. I suggest that we ask that people put somet; /archives//html/Amps/2000-06/msg00038.html (8,121 bytes)
9. [AMPS] Dumb directly heated cathode amp operational questions (score: 1): Author: billp@wwpc.com (Bill Putney); Date: Tue, 6 Jun 2000 15:31:40 -0700 (PDT); OK, I'm new to using HF amplifiers. Here's some rudimentary questions for everyone. I just bought a Henry 2K-4. It has 2 3-500Z's inside and the blower makes a fine noise. Not noisier than we have a; /archives//html/Amps/2000-06/msg00044.html (10,015 bytes)
10. [AMPS] Henry 2K-4 (2KD4) shielding question (score: 1): Author: billp@wwpc.com (Bill Putney); Date: Fri, 9 Jun 2000 09:37:52 -0700 (PDT); I bought this amp at a swap meet last Sunday. While cleaning the TR relay, I noticed that there is a shield box enclosing an area in the back of the amp where the exciter input, fwd power calibrate p; /archives//html/Amps/2000-06/msg00081.html (7,693 bytes)
11. [AMPS] Step-start. questiobn DE K0FF (score: 1): Author: billp@wwpc.com (Bill Putney); Date: Fri, 9 Jun 2000 12:17:41 -0700 (PDT); I wonder if anyone has ever tried negative temperate coefficient thermistors to do a step start. They have are available in a range of values but a thermistor that has a 10 ohm cold resistance would; /archives//html/Amps/2000-06/msg00088.html (11,301 bytes)
12. [AMPS] Henry 2k-4 (2 piece Desktop). Is this thing working right? (score: 1): Author: billp@wwpc.com (Bill Putney); Date: Mon, 26 Jun 2000 09:51:42 -0700 (PDT); I'm new to tuning HF amateur amps. I've tuned a lot of tube VHF and UHF amps in amateur and commercial service. I tuned a fair number of tube HF amps in the military (including Collins S line at MARS; /archives//html/Amps/2000-06/msg00420.html (8,592 bytes)
13. [Amps] Yaesu FT-2000 "TX-INH" Spec? (score: 1): Author: Bill Putney <billp@wwpc.com>; Date: Thu, 07 Nov 2013 13:46:22 -0800; Has anyone cracked this nut yet? I'm doing a mod to my Henry 2KD-4 to replace the open frame T-R relay with Gigavac relays. I'm using the SEQ-QSK sequencer to drive the relays. I want to use the "TX-; /archives//html/Amps/2013-11/msg00114.html (7,499 bytes)
14. [Amps] How much power through a BNC connector? (score: 1): Author: Bill Putney <billp@wwpc.com>; Date: Sun, 10 Nov 2013 18:09:26 -0800; Now that I'm in the middle of doing a QSK mod to the Henry 2KD-4... I'm looking at the BNC input connector to the amp. It occurs to me that if I use my FT-2000D barefoot through the amp I may be push; /archives//html/Amps/2013-11/msg00227.html (7,452 bytes)
15. [Amps] Henry 2KD-4 Blower Replacement (score: 1): Author: Bill Putney <billp@wwpc.com>; Date: Sat, 27 Dec 2014 13:40:25 -0800; I'm sure this has all been covered here in the past so, if you want to, you can reply offline. I have a Henry 2KD-4 amp. It's in good shape except that the blower has gotten so noisy people complain; /archives//html/Amps/2014-12/msg00110.html (7,524 bytes)
16. [Amps] Henry 2KD4 Blower Replacement Instructions? (score: 1): Author: Bill Putney <billp@wwpc.com>; Date: Tue, 6 Dec 2016 08:51:13 -0800; Does anyone have detailed instructions for the replacement of the blower in the 2KD4? Also, is there a replacement blower (or fan) that will produce the required cooling at a lower noise level? I'm n; /archives//html/Amps/2016-12/msg00140.html (6,875 bytes)
17. [Amps] Henry 2KD-4 to a good home. (score: 1): Author: Bill Putney <billp@wwpc.com>; Date: Tue, 8 Feb 2022 15:25:47 -0800; I have a Henry 2KD-4 that has working tubes in it. I had some trouble with the TR relay and decided to convert to the miniature vacuum relays. I got part way through the project and got side tracked.; /archives//html/Amps/2022-02/msg00001.html (6,627 bytes)

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