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References: [ +from:ulf@sm0nor.com: 54 ]

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21. Re: [Amps] Cetron 811a. (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Tue, 6 Dec 2011 22:55:09 +0100
Thanks for the advice. Only tuning of the input circuit left. Then ready for the test.... :) 73's Ulf (SM0NOR) ulf@sm0nor.com _______________________________________________ Amps mailing list Amps@co
/archives//html/Amps/2011-12/msg00052.html (11,411 bytes)

22. Re: [Amps] Cetron 811a. (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Tue, 6 Dec 2011 22:57:23 +0100
Thanks Carl. Good advice. And yes, I do have the glitch... 73's Ulf (SM0NOR) ulf@sm0nor.com _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesti
/archives//html/Amps/2011-12/msg00053.html (9,840 bytes)

23. [Amps] home brew 811a amp - need some advice (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Sat, 17 Dec 2011 16:20:22 +0100
Hi all, I need some advice from you more experienced guys.... I've been building on my 811a amp for some months now and I'm reaching quickly the point of the "big" test. Every section of the amp has
/archives//html/Amps/2011-12/msg00133.html (8,898 bytes)

24. Re: [Amps] home brew 811a amp - need some advice (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Sun, 18 Dec 2011 20:32:44 +0100
Yes, I guess I could do without the step start. I may try without it when I get a new transformer. I just need to find a way of protecting it better. I would probably put in a fast acting circuit bre
/archives//html/Amps/2011-12/msg00143.html (11,753 bytes)

25. Re: [Amps] GLA-1000B mods (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Tue, 31 Jan 2012 14:00:19 +0100
It's a fun conversion object though. It's a very crappy build and it don't get much better from a conversion in terms of IMD. But it's easy, educational and fun. I did it over a weekend. Needless to
/archives//html/Amps/2012-01/msg00306.html (9,870 bytes)

26. Re: [Amps] Guidelines.....toroids for tank ckts (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Wed, 28 Mar 2012 17:31:20 +0200
"design a toroidal tank circuit for your vacuum tube amplifier" It's in Ham Radio Magazine August 1985. Perhaps the information is old and outdated - I'm no expert. But I found it useful when I built
/archives//html/Amps/2012-03/msg00299.html (9,624 bytes)

27. [Amps] preparing unsed gi7b:s? (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Tue, 15 May 2012 21:31:29 +0200
Hi Forum, What are you guys doing to prepare GI7b:s for first time use? I recall playing with one some years ago and I don't remember doing anything special apart from running it on filament for a da
/archives//html/Amps/2012-05/msg00282.html (6,501 bytes)

28. Re: [Amps] preparing unsed gi7b:s? (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Wed, 16 May 2012 09:35:42 +0200
That's how I recall doing it last time without any problems. I'll go for that again. And if something pops, they don't dig deep holes in the pocket :-) Thanks! 73's Ulf (SM0NOR) ulf@sm0nor.com On 16
/archives//html/Amps/2012-05/msg00284.html (7,767 bytes)

29. Re: [Amps] 3CX1500A7/8877 vs el cheapo GS-35B (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Wed, 1 Aug 2012 17:46:17 +0200
Good point Alex! I started my amp building career with a super designed, fully protected amp. That amp turned out to be too complicated for a beginner, so I derated my expectations and quickly built
/archives//html/Amps/2012-08/msg00004.html (7,665 bytes)

30. [Amps] Transformer choice (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Mon, 4 Mar 2013 12:28:34 +0100
Hi Guys, I'm looking for some feedback on two transformer offers I have. I'm intending to build a table top amp, so I'm accepting some compromises regarding the transformer. I have made inquiries to
/archives//html/Amps/2013-03/msg00041.html (7,833 bytes)

31. Re: [Amps] Transformer choice (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Mon, 4 Mar 2013 19:30:17 +0100
You probably need to add another 10 kilos of iron and thicker copper wire to reach that goal of temp rise, which brings it closer to commercial service and further away from the ham-specs... _______
/archives//html/Amps/2013-03/msg00054.html (7,701 bytes)

32. Re: [Amps] Transformer choice (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Mon, 4 Mar 2013 23:13:34 +0100
No one mentioned CCS here, Carl. I was into "ham specs" already from the beginning. This particular project calls for a certain level of mobility. Compromise is fine.. Sent from a wireless device of
/archives//html/Amps/2013-03/msg00060.html (13,734 bytes)

33. Re: [Amps] Transformer choice (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Mon, 4 Mar 2013 23:34:53 +0100
I actually think the quote was for class 105, which is 40 ambient+55 rise+10 hot spot. Sent from a wireless device of an unrevealed brand. _______________________________________________ Amps mailing
/archives//html/Amps/2013-03/msg00061.html (10,826 bytes)

34. Re: [Amps] Transformer choice (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Tue, 5 Mar 2013 03:18:32 +0100
Point taken... Sent from a wireless device of an unrevealed brand. _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/a
/archives//html/Amps/2013-03/msg00065.html (15,887 bytes)

35. Re: [Amps] chassis maker? (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Sun, 5 May 2013 20:40:01 +0200
I'm using sheet aluminium and angle stock. Ripping straight took some learning, but also good, high-end power tools. I'm using a Festool circular saw with rail guide for long rips and a Festool jigsa
/archives//html/Amps/2013-05/msg00102.html (17,839 bytes)

36. Re: [Amps] where to begin (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Thu, 7 Nov 2013 17:50:03 +0100
Gustavo, The ARRL 2013 is a very good source. Even better is William Orr's The Radio Handbook. The design chapters are very thorough and easy to understand. If you get either of the later editions, e
/archives//html/Amps/2013-11/msg00107.html (12,957 bytes)

37. [Amps] SSR in amp PS not working as expected (score: 1)
Author: Ulf Tjerneld <ulf@sm0nor.com>
Date: Sat, 5 Jan 2019 11:59:17 +0100
Hi All, I start with the question: Is there anything around SSR:s in general or anything in particular around the Crydom CSD2525P that I dont understand when used as breakers and step -start in a HV
/archives//html/Amps/2019-01/msg00016.html (8,716 bytes)

38. Re: [Amps] SSR in amp PS not working as expected (score: 1)
Author: Ulf Tjerneld <ulf@sm0nor.com>
Date: Mon, 7 Jan 2019 19:31:21 +0100
Thanks a lot for all this information. I got some help from the local ham community here too. Most of the feedback I get is to avoid them and stay with traditional relays. I have learned a lot recent
/archives//html/Amps/2019-01/msg00026.html (11,175 bytes)

39. Re: [Amps] SSR in amp PS not working as expected (score: 1)
Author: Ulf Tjerneld <ulf@sm0nor.com>
Date: Wed, 9 Jan 2019 19:26:23 +0100
< Do you have an oscilloscope, so you can look what's happening? And if not, maybe you could rig up a simple circuit that samples the voltage applied to the transformer, via a small transformer and r
/archives//html/Amps/2019-01/msg00033.html (9,671 bytes)

40. Re: [Amps] SSR in amp PS not working as expected (score: 1)
Author: Ulf Tjerneld <ulf@sm0nor.com>
Date: Wed, 9 Jan 2019 19:33:07 +0100
Oh dint know Paul was SK. I bought a few tuned input boards from him a few years ago. Great guy, great build. Ill take a look in his gallery and see if there are any comments. I know he proposes SSR
/archives//html/Amps/2019-01/msg00034.html (13,200 bytes)

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