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1. [AMPS] AL-811H (score: 1): Author: HAMKE4WY@aol.com (HAMKE4WY@aol.com); Date: Mon, 28 Aug 2000 15:06:34 EDT; Thanks to all the postings and especially the private email concerning my questions on the AL-811H. I did wire it for 240 and have noticed an increase in PEP power. 600 - 800 watt range now. Thanks d; /archives//html/Amps/2000-08/msg00450.html (6,543 bytes)
2. [AMPS] AL-811H (score: 1): Author: kia@netins.net (Ken & Rose Kreis); Date: Mon, 28 Aug 2000 16:35:15 -0500; Yes, always better to run a amp on 240. Why pull a lot of current on 120 when you do not have to. 73, Ken, KA0W increase -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting; /archives//html/Amps/2000-08/msg00460.html (7,223 bytes)
3. [Amps] AL-811H (score: 1): Author: "Daniel Hileman" <n9wx@hotmail.com>; Date: Wed, 30 Mar 2005 15:00:25 +0000; Hi Everyone, Thanks for all the input about the MLA-2500 and the 811h, I think I'm gonna go with the 811H. Here's another question to which I THINK I know the answer. Will putting 572B tubes (and May; /archives//html/Amps/2005-03/msg00718.html (6,998 bytes)
4. Re: [Amps] AL-811H (score: 1): Author: "Will Matney" <craxd1@ezwv.com>; Date: Wed, 30 Mar 2005 10:40:10 -0500; Daniel, It might handle them on SSB only, no CW or AM. Also, I would think the tank would have to be matched to the tubes, not sure because the plate resistance will change. Will ** REPLY SEPARATOR *; /archives//html/Amps/2005-03/msg00719.html (7,926 bytes)
5. Re: [Amps] AL-811H (score: 1): Author: "Gary Smith" <wa6fgi@sbcglobal.net>; Date: Wed, 30 Mar 2005 10:15:18 -0800; I want to recall that the power supply in the 811H does not have enough output to make much difference in power out when 572 B's are used. However.. if you do install 572's, they will last almost for; /archives//html/Amps/2005-03/msg00727.html (9,300 bytes)
6. Re: [Amps] AL-811H (score: 1): Author: Don Nesbitt <nesbittdr@yahoo.com>; Date: Wed, 30 Mar 2005 12:49:01 -0800 (PST); The 572B's will work fine - but - without increasing the anode voltage you likely won't get anymore output - just the satisfaction of knowing that you have lots more plate dissipation for an extra ma; /archives//html/Amps/2005-03/msg00730.html (8,469 bytes)
7. Re: [Amps] AL-811H (score: 1): Author: "carl seyersdahl" <carlseye@tampabay.rr.com>; Date: Wed, 30 Mar 2005 20:13:00 -0500; Is it Don or Dan?? Anyway, when it comes to the question of 811A's or 572B's , if you have an amp such as the 811, or 811H, or any amp for that matter , that uses 811A tubes, if you happen to have so; /archives//html/Amps/2005-03/msg00735.html (10,906 bytes)
8. [Amps] AL-811H (score: 1): Author: Hal W5GHZ <w5ghz@yahoo.com>; Date: Fri, 22 Oct 2010 19:39:49 -0700 (PDT); Charles, Did you check the grid resistors? I have an AL-811H that did the self destruct thing and it took out a couple of the grid resistor along with a couple of tubes. I posted this, but didn't; /archives//html/Amps/2010-10/msg00356.html (6,301 bytes)
9. [Amps] AL-811H (score: 1): Author: "Tom Osborne" <w7why@frontier.com>; Date: Sun, 26 Feb 2012 15:56:23 -0800; On the 3830 contest reflector someone posted a comment that "The AL-811H has a know problem of the parasictic chokes burning up on 10 meters." Is that a true fact on those amps? 73 Tom W7WHY ________; /archives//html/Amps/2012-02/msg00271.html (6,449 bytes)
10. Re: [Amps] AL-811H (score: 1): Author: "Tom Osborne" <w7why@frontier.com>; Date: Sun, 26 Feb 2012 16:12:49 -0800; Thanks for the info. I have a friend here who has one about a year old and was wondering about that. 73 Tom W7WHY The newer ones have a whole different suppressor scheme than the older ones. if this; /archives//html/Amps/2012-02/msg00272.html (7,409 bytes)
11. Re: [Amps] AL-811H (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Sun, 26 Feb 2012 21:13:49 -0500; I havent had any H's come thru here that werent neutralized but extended tuning does cook the suppressors on 10M. I tear out that stuff and wrap the original coil around one of a pair of 100 Ohm Ohmi; /archives//html/Amps/2012-02/msg00273.html (9,467 bytes)
12. Re: [Amps] AL-811H (score: 1): Author: Charles Mills <w3yni1@gmail.com>; Date: Sun, 26 Feb 2012 21:16:15 -0500; I use a set of JAN 811 tubes that I picked up from Surplussales. Also a ham friend of mine used his Greenlee punches to cut a whole in the side for a fan to blow across the tubes and keep them cooler; /archives//html/Amps/2012-02/msg00274.html (10,311 bytes)
13. Re: [Amps] AL-811H (score: 1): Author: Hal W5GHZ <w5ghz@yahoo.com>; Date: Mon, 27 Feb 2012 09:38:27 -0800 (PST); I have an AL-811H that was given to me. Had to replace the tubes and have had nothing but problems. I can't get the amp to neutralize no mater what I do. I haven't tried 572B's yet. Sure wish I c; /archives//html/Amps/2012-02/msg00286.html (11,390 bytes)

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