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1. [Amps] AL-572 (score: 1): Author: carlseye@tampabay.rr.com (carl seyersdahl); Date: Fri, 3 Jan 2003 19:16:13 -0500; I suppose it's a matter of opinion, but I have repaired several amps using 572B's I have not had any major problems getting within 10% or so on ten mtrs. from what I had on 80 mtrs. (600-700w) from a; /archives//html/Amps/2003-01/msg00027.html (10,228 bytes)
2. [Amps] Amp Problem Solved (score: 1): Author: carlseye@tampabay.rr.com (carl seyersdahl); Date: Sat, 18 Jan 2003 09:37:39 -0500; It's the littlest things that cause the biggest problems at times. !!!! (been there , done that ) carl / kz5ca -- Original Message -- From: "Ed" <edw3nr@nexband.com> To: "Amps" <amps@contesting.com>; /archives//html/Amps/2003-01/msg00149.html (7,477 bytes)
3. [Amps] SB-221 input network should have read SB-201/SB-200 input network....etc (score: 1): Author: carlseye@tampabay.rr.com (carl seyresdahl); Date: Sat, 2 Nov 2002 12:24:01 -0500; Mike and all: I just remembered I have an SB201 i;ve been working on, Just that i haven't looked at it for so long, since i've been working on some other amps for other people. The 40 mtr. coil has 1; /archives//html/Amps/2002-11/msg00010.html (10,321 bytes)
4. [Amps] SB-221 input network should have read SB-201/SB-200 input network....etc (score: 1): Author: carlseye@tampabay.rr.com (carl seyresdahl); Date: Sat, 2 Nov 2002 13:02:20 -0500; Here's another one for you ,Mike; my handbook lists the driving impedance of a 572b as 215 ohms, so for two of them in parallel that would be about 107 ohms . the first time I did an SB200 I tuned th; /archives//html/Amps/2002-11/msg00011.html (10,434 bytes)
5. [Amps] troubleshooting a sb200 (score: 1): Author: carlseye@tampabay.rr.com (carl seyresdahl); Date: Mon, 4 Nov 2002 19:32:09 -0500; Steve: how much hi voltage do you have. ?? With 300 watts out it sounds like you might have one dead tube. How much grid current do you see?? should be less than half scale (100) ma. with two good tu; /archives//html/Amps/2002-11/msg00031.html (8,959 bytes)
6. [Amps] transformers (score: 1): Author: carlseye@tampabay.rr.com (carl seyresdahl); Date: Mon, 11 Nov 2002 19:22:46 -0500; I am trying to duplicate a transmission line transformer and need to find some "scotch no. 92 " tape. can anyone point me in the right direction ??? thanks. !! carl / kz5ca; /archives//html/Amps/2002-11/msg00183.html (6,333 bytes)
7. [Amps] Pi-networks (score: 1): Author: carlseye@tampabay.rr.com (carl seyresdahl); Date: Thu, 21 Nov 2002 20:40:19 -0500; I have searched and Researched articles on "design of pi-networks" and have noted one thing which seems to be a common thread. IE: they seem to all pertain to "plate to antenna " situations.. In othe; /archives//html/Amps/2002-11/msg00333.html (6,998 bytes)
8. [Amps] DC On tube filaments (score: 1): Author: carlseye@tampabay.rr.com (carl seyresdahl); Date: Wed, 9 Oct 2002 19:14:22 -0400; I don't know about "modern" tubes, but years ago, when many of you may have been in diapers (or not yet born ?), we had many picture tubes, (in television) that failed due to "open filaments " and we; /archives//html/Amps/2002-10/msg00093.html (10,677 bytes)
9. [Amps] SG-8 (score: 1): Author: carlseye@tampabay.rr.com (carl seyresdahl); Date: Tue, 15 Oct 2002 20:05:39 -0400; Does anyone on the list have a copy of the manual for the heathkit SG-8 = sig.gen.?? I found it on the BAMA site but can't copy it or even read = it. !!! it looks like it was copied from a very bad c; /archives//html/Amps/2002-10/msg00162.html (6,370 bytes)
10. [Amps] e-mail (score: 1): Author: carlseye@tampabay.rr.com (carl seyresdahl); Date: Tue, 10 Sep 2002 19:57:09 -0400; Please : My computer went down last week and I am just now getting = back online. If anyone on Amps. has tried to contact me please let me = know off list !!! thanks .=20 carl / kz5ca -- StripMime Re; /archives//html/Amps/2002-09/msg00070.html (6,313 bytes)
11. [Amps] Heising Choke (score: 1): Author: carlseye@tampabay.rr.com (carl seyresdahl); Date: Tue, 17 Sep 2002 17:11:03 -0400; I can't believe there is anyone still alive who remembers what "heising modulation " is !!!!!(except me, that is ) carl / kz5ca -- Original Message -- From: "James Tolar" <w5sqe@iname.com> To: <Amps@; /archives//html/Amps/2002-09/msg00115.html (8,204 bytes)
12. [Amps] Clipperton L lamps (?) (score: 1): Author: carlseye@tampabay.rr.com (carl seyresdahl); Date: Fri, 27 Sep 2002 07:12:08 -0400; That may look like one piece, but is most likely the type that takes the no. 330 bulb, a small bulb called a midget flange base bulb. Look very closely at the bottom and take a knife to the bottom ed; /archives//html/Amps/2002-09/msg00256.html (7,508 bytes)
13. [Amps] amps (score: 1): Author: carlseye@tampabay.rr.com (carl seyresdahl); Date: Fri, 27 Sep 2002 08:05:12 -0400; In working with a GLA1000 amp I found that the 12vac winding measured = about 20 v (loaded with relay, all bulbs). I then measured the filament = voltage , 6.5 vac. Hooking up the Variac , I reduced; /archives//html/Amps/2002-09/msg00258.html (6,805 bytes)
14. [Amps] SB200 - RFC2 Replacement? (score: 1): Author: carlseye@tampabay.rr.com (carl seyresdahl); Date: Sun, 29 Sep 2002 07:47:40 -0400; Chris: From your info I suspect you had a parasitic hit. that choke should normally be able to handle lots more current than the "normal" amount (200 ma . max.) I ould also suggest you get a kit from; /archives//html/Amps/2002-09/msg00269.html (8,766 bytes)
15. [Amps] meter (score: 1): Author: carlseye@tampabay.rr.com (carl seyersdahl); Date: Thu, 1 Aug 2002 14:29:46 -0400; A member of our radio club needs a plate current meter for an SB220. if we can find just the movement that's ok because the case of his meter is good. Any help out there ?? thanks. !! carl / kz5ca; /archives//html/Amps/2002-08/msg00011.html (6,249 bytes)
16. [Amps] al80a (score: 1): Author: carlseye@tampabay.rr.com (carl seyersdahl); Date: Thu, 1 Aug 2002 18:35:40 -0400; In my FWIW dept. I looked over the entire amp and didn't find anything of conncern. I did find a burned resistor which turned out to be in the external 12vdc line. , but no burned bandswitch contacts; /archives//html/Amps/2002-08/msg00012.html (8,283 bytes)
17. [Amps] al80a (score: 1): Author: carlseye@tampabay.rr.com (carl seyersdahl); Date: Fri, 2 Aug 2002 07:04:10 -0400; Very good question , Steve !! I'll take a look at that situation a little later today.. I'll run the same test with the tube "standing up" as in the correct position !!! carl / kz5ca -- Original Mess; /archives//html/Amps/2002-08/msg00016.html (10,075 bytes)
18. [Amps] al80a (score: 1): Author: carlseye@tampabay.rr.com (carl seyersdahl); Date: Fri, 2 Aug 2002 08:20:24 -0400; upright, vertical, as it would be in the amp, position.!! the result was the same. 20-25 ohms as soon as the filament warmed up. !! carl / kz5ca -- Original Message -- From: "Steve Thompson" <g8gsq@; /archives//html/Amps/2002-08/msg00017.html (10,066 bytes)
19. [Amps] suppressors (score: 1): Author: carlseye@tampabay.rr.com (carl seyersdahl); Date: Sun, 4 Aug 2002 14:11:52 -0400; Here is a point I've never seen discussed , anywhere, and I've often wondered about it !! what reason is there for a specific value of resistor in a parasitic suppressor. ?? I have seen 50 ohms, 100; /archives//html/Amps/2002-08/msg00056.html (6,964 bytes)
20. [Amps] hv. caps. (score: 1): Author: carlseye@tampabay.rr.com (carl seyersdahl); Date: Wed, 7 Aug 2002 19:38:11 -0400; I can't believe the trouble I'm having trying to get 2-3-4-6 kv. . 01 , ceramic caps for bypass units. 2 kv. caps I can get but I need bigger ones at times. !! where do all you amp guru's get your ca; /archives//html/Amps/2002-08/msg00087.html (6,687 bytes)

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