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1. [AMPS] Plate chokes and other mysteries... (score: 1): Author: NS1Z / John" <ns1z@arrl.net (NS1Z / John); Date: Sat, 11 Mar 2000 19:57:10 -0500; 1. I have an Ameritron AL-80A, single 3-500. The plate choke went POW!! I know it did since I viewed the two ends of the wire hanging next to each other in the top winding. Can this be repaired by me; /archives//html/Amps/2000-03/msg00584.html (8,065 bytes)
2. [AMPS] Re: Plate chokes and other mysteries... (score: 1): Author: NS1Z / John" <ns1z@arrl.net (NS1Z / John); Date: Sun, 12 Mar 2000 06:00:48 -0500; I was tuning up directly (no tuner) into a HyGain HyTower on the (don't tell anyone) CW portion of the band. John Wilcox NS1Z 871 Route 120 Rumford, ME 04276-3836 fone: 207-364-2246 -- Original Messa; /archives//html/Amps/2000-03/msg00594.html (8,403 bytes)
3. [AMPS] Re: Plate chokes and other mysteries... (score: 1): Author: NS1Z / John" <ns1z@arrl.net (NS1Z / John); Date: Sun, 12 Mar 2000 07:01:33 -0500; That was supposed to say 40 meter CW portion of the band....... Who makes these computers type so bad, anyway??? tell -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contestin; /archives//html/Amps/2000-03/msg00595.html (9,559 bytes)
4. [AMPS] ? about tuned input, sorry.... (score: 1): Author: NS1Z / John" <ns1z@arrl.net (NS1Z / John); Date: Sat, 19 Feb 2000 14:07:21 -0500; I have a Grief Kit SB-221 that has been gutted and put on 6 meters. The input VSWR is >2.5 and I would like to tame it for my FT-847 driver. Seems to me I remember something about soldering a resisto; /archives//html/Amps/2000-02/msg00375.html (8,666 bytes)
5. [AMPS] Input impedance (score: 1): Author: NS1Z / John" <ns1z@arrl.net (NS1Z / John); Date: Tue, 22 Feb 2000 05:22:58 -0500; Some time ago, one of you gentlemen posted a list of input/output impedance for various amplifier tube/s. In this current wave of measured generosity, could this list be reposted? My dog ate my homew; /archives//html/Amps/2000-02/msg00479.html (6,878 bytes)
6. [AMPS] WTD: Schematic for AL-80A (score: 1): Author: NS1Z / John" <ns1z@arrl.net (NS1Z / John); Date: Tue, 22 Feb 2000 19:05:41 -0500; I just acquired an AL-80A. I have a manual for the AL-80 and the AL-80B but not the "A". Would one of you kind souls please help me locate one? I need to connect it for 120 VAC operation while I brin; /archives//html/Amps/2000-02/msg00513.html (6,971 bytes)
7. [AMPS] NO NEWS FROM KM1H (score: 1): Author: ns1z@arrl.net (John / NS1Z); Date: Mon, 29 Nov 1999 16:14:36 +0000; Try e-mailing him again. You will find the account active now. Do not jump to conclusions not based on fact.... 73 from NS1Z, FN44rn John Wilcox 871 Route 120 Rumford, ME 04276-3836 fon: 207-364-2246; /archives//html/Amps/1999-11/msg00546.html (10,594 bytes)
8. [AMPS] re: AL80 pfffffttttt!! (score: 1): Author: ns1z@arrl.net (John / NS1Z); Date: Fri, 01 Oct 1999 18:56:41 +0000; It turns out that the problem was the grid current indicating resistor had opened up. Negative grid current was indicated since B- path was thru meter instead of 1.5 ohm resistor. First thing to chec; /archives//html/Amps/1999-10/msg00037.html (7,597 bytes)
9. [AMPS] Ground rods? (score: 1): Author: ns1z@arrl.net (John / NS1Z); Date: Fri, 08 Oct 1999 05:19:48 +0000; Hmmmm???! I just planted a used HyGain HyTower in the backyard. Their instructions direct you to use 6 8' ground rods in a pattern at the base of the antenna, about 24" out, all tied together with #8; /archives//html/Amps/1999-10/msg00285.html (10,352 bytes)
10. [AMPS] SB220 on 6 (score: 1): Author: ns1z@arrl.net (John / NS1Z); Date: Mon, 25 Oct 1999 05:03:20 +0000; I have been butchering a Heath SB220 to get it on 6. Input VSWR is ~2:1 and can't seem to improve that. Rich mentions a problem with the relay causing reactance. The bypass measurement is the same so; /archives//html/Amps/1999-10/msg00622.html (7,264 bytes)
11. [AMPS] Health & Welfare of KM1H ??? (score: 1): Author: ns1z@arrl.net (John / NS1Z); Date: Mon, 25 Oct 1999 16:54:37 +0000; Last I heard from Carl was a note that he had received some books on HTML authoring I had sent him. He must be lost on the web.... 73 from NS1Z, FN44rn John Wilcox 871 Route 120 Rumford, ME 04276-383; /archives//html/Amps/1999-10/msg00630.html (8,152 bytes)
12. [AMPS] feedback sought: Ameritron AL-80 (score: 1): Author: ns1z@arrl.net (John / NS1Z); Date: Fri, 29 Oct 1999 18:26:40 +0000; Your mileage may vary, but from my own experience: I have owned all three: AL-80, SB1000, and AL80B. They all showed >850 watts carrier into non-radiating (HA!) loads when measured with Bird 43 and 2; /archives//html/Amps/1999-10/msg00672.html (8,567 bytes)
13. [AMPS] SB230 relay (score: 1): Author: ns1z@arrl.net (John / NS1Z); Date: Mon, 13 Sep 1999 17:21:41 +0000; I acquired a HeathKit SB230 amp at the Windsor Hamfest this past weekend. Seems to make advertised power (~500 watts into load at 29 mHz). Of course, there is a minor problem: It uses a pair of DowKe; /archives//html/Amps/1999-09/msg00110.html (7,191 bytes)
14. [AMPS] AL80 pfffffttttt!! (score: 1): Author: ns1z@arrl.net (John / NS1Z); Date: Tue, 28 Sep 1999 19:07:41 +0000; Was testing the output of my AL80 (not A or B, or even C!) when the classic phfZzt sound echoed from the cabinet. When keyed, the grid current shows negative and little or no RF output power. Plate v; /archives//html/Amps/1999-09/msg00306.html (7,105 bytes)
15. [AMPS] technical question (score: 1): Author: ns1z@arrl.net (John / NS1Z); Date: Fri, 11 Jun 1999 04:00:43 +0000; I worked at a 'little' shortwave station in Greenbush, Maine that did that. The tube anode was supplied by 28 modules @ 1 kV each. Solid state control switched in the number of modules required via f; /archives//html/Amps/1999-06/msg00367.html (9,058 bytes)
16. [AMPS] RF Concepts Amplifier Question (score: 1): Author: ns1z@arrl.net (John / NS1Z); Date: Thu, 17 Jun 1999 04:38:41 +0000; It's been my experience (being active two weeks should make me an expert!) that most non reactive loads for UHF are very expensive if they are reliable. I don't see a mention of what you used for a l; /archives//html/Amps/1999-06/msg00503.html (10,571 bytes)
17. [AMPS] Resoldering 3-500Z Filament Pins ?? (score: 1): Author: ns1z@arrl.net (John / NS1Z); Date: Fri, 02 Apr 1999 11:23:17 +0000; I think we can all see now just what the effects of a HV surprise are.... John Wilcox NS1Z FN44rn ns1z@arrl.net fon: 207-364-2246 871 Route 120 Rumford, ME 04276-3836 -- FAQ on WWW: http://www.contes; /archives//html/Amps/1999-04/msg00029.html (9,064 bytes)
18. [AMPS] Schematic for Clipperton V (score: 1): Author: ns1z@arrl.net (John / NS1Z); Date: Tue, 9 Mar 1999 10:35:04 -0000; I acquired a Dentron Clipperton V amp (2 meters) and need to acquire the original schematic and/or manual for it. The previous owner attempted to modify the tank circuit but did not manage to improve; /archives//html/Amps/1999-03/msg00182.html (6,969 bytes)
19. [AMPS] HV connectors again... (score: 1): Author: ns1z@arrl.net (John / NS1Z); Date: Wed, 17 Mar 1999 23:54:07 +0000; To those who intend to be severely offended my apologies: Looking for info on HV connectors for my 3-500 amp. What about the chassis mount SO-239 connector. Anyone know its voltage rating. Can I get; /archives//html/Amps/1999-03/msg00392.html (7,375 bytes)
20. [AMPS] Cathode Impedance Measurements (score: 1): Author: ns1z@arrl.net (John / NS1Z); Date: Fri, 26 Mar 1999 23:04:00 +0000; I also have a 259B and it sure helps. I used it to check the input and output networks on my HB 6 meter QRM'er. Sure makes it easy for simpleton's like me. Of course, it did take just once to make it; /archives//html/Amps/1999-03/msg00632.html (9,124 bytes)

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