Mail Archive Search: <+subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Amps\]\s+AL\-1200\s*$/>

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Amps\]\s+AL\-1200\s*$/: 30 ]

Total 30 documents matching your query.

21. [AMPS] al-1200 (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Sat, 29 Mar 1997 20:33:11 EST; It is an improved circuit to tame this amp down and also provide a bit of neutralization. From all reports it works quite well. 73...Carl KM1H On Sat, 29 Mar 1997 14:19:11 -0500 (EST) stratto@tiac.ne; /archives//html/Amps/1997-03/msg00315.html (7,918 bytes)
22. [AMPS] al-1200 (score: 1): Author: w8jitom@worldnet.att.net (Tom Rauch (W8JI)); Date: Sat, 29 Mar 1997 21:49:13 -0500; The strap is for neutralizing. There is a 180 degree phase inverting transformer under the chassis, connected to the filament. The circuit samples RF near the anode by capcitive coupling, inverts the; /archives//html/Amps/1997-03/msg00318.html (7,418 bytes)
23. [AMPS] al-1200 (score: 1): Author: measures@vc.net (Rich Measures); Date: Sat, 29 Mar 97 20:45:02 -0800; ...snip... Not in any engineering book I have seen. ........both of which earned a reputation for oscillating . Heath subsequently stopped using 'neutralizing'. . R. L. Measures,ag6k,805-386-3734 --; /archives//html/Amps/1997-03/msg00322.html (7,623 bytes)
24. [Amps] AL-1200 (score: 1): Author: Roger D Johnson <n1rj@roadrunner.com>; Date: Tue, 21 Sep 2010 10:32:24 -0400; I've been pondering the purchase of a new amp. The AL-1200 looks like a good fit to my requirements especially now that it comes with the 3CX1200Z7. On Greg Ordy's site he indicates that the old 3 po; /archives//html/Amps/2010-09/msg00241.html (6,686 bytes)
25. Re: [Amps] AL-1200 (score: 1): Author: "Boye Christensen" <oz7c@cool.dk>; Date: Tue, 19 Oct 2010 19:58:30 +0200; Hi to all What does the say abt HV ?? I'll say take the tube out and check the pin connections Schematics on the internet. 1. if g1 shorten to filament 2 Are both ends of filament connected 3 There i; /archives//html/Amps/2010-10/msg00301.html (17,390 bytes)
26. [Amps] AL-1200 (score: 1): Author: Bob Gibson via Amps <amps@contesting.com>; Date: Wed, 24 Dec 2014 17:51:40 +0000 (UTC); I'm having a problem with a friends al-1200 amp.. He is 80 years old I'm 71 and we can not figure this out.. I have replaced the stock P/S board twice.. after a short time it blows out.. I have rep; /archives//html/Amps/2014-12/msg00091.html (6,957 bytes)
27. Re: [Amps] AL-1200 (score: 1): Author: Vic Rosenthal 4X6GP/K2VCO <k2vco.vic@gmail.com>; Date: Wed, 24 Dec 2014 20:23:09 +0200; Make sure the primary of the plate transformer is correctly wired for the line voltage. For example, if the transformer is wired for 220 and the line voltage is 250 (not uncommon), a nominal 3200V DC; /archives//html/Amps/2014-12/msg00092.html (8,444 bytes)
28. Re: [Amps] AL-1200 (score: 1): Author: Louis Parascondola via Amps <amps@contesting.com>; Date: Wed, 24 Dec 2014 13:34:06 -0500; Yes, make sure the plate transformer is NOT using the green wire instead of the brown/white lead. If the green wire is used it can very well up the HV to 3900 volts will eventually stress out the fil; /archives//html/Amps/2014-12/msg00093.html (8,866 bytes)
29. Re: [Amps] AL-1200 (score: 1): Author: Bob Gibson via Amps <amps@contesting.com>; Date: Wed, 24 Dec 2014 18:45:19 +0000 (UTC); I have added a WD7S ABOARD WHICH HAS 10 FILTER CAPS ON IT..I do need to check the input voltage and the wires to the transformer.. that is one thing I have not done..I replaced the step start because; /archives//html/Amps/2014-12/msg00094.html (9,921 bytes)
30. Re: [Amps] AL-1200 (score: 1): Author: Louis Parascondola via Amps <amps@contesting.com>; Date: Wed, 24 Dec 2014 13:52:41 -0500; Bob, although it is not unusual for the BIG BOX Ameritron amps to let the smoke out of the caps at some point, it is most unlikely to have the diodes blow. In fact in the many years I have been repai; /archives//html/Amps/2014-12/msg00095.html (10,230 bytes)

Current List: 21 - 30
Page: [1] [2]