- 1. [Amps] AL-811 Tube Swap (score: 1)
- Author: Richard Solomon <dickw1ksz@gmail.com>
- Date: Wed, 28 Apr 2021 09:25:01 -0700
- I have an old AL-811 on the Test Bench I use when I need a little more starch for test purposes. I thought about replacing the 811's with 572B's. Any pitfalls on that idea ? Tnx, Dick, W1KSZ ________
- /archives//html/Amps/2021-04/msg00100.html (6,369 bytes)
- 2. Re: [Amps] AL-811 Tube Swap (score: 1)
- Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
- Date: Wed, 28 Apr 2021 14:23:28 -0500
- What Ive read on this says not to expect much more out because the B+ is a bit low for 572Bs. But otherwise, its a simple swap. The 572Bs are more rugged. Kim N5OP "People that make music together ca
- /archives//html/Amps/2021-04/msg00101.html (7,342 bytes)
- 3. Re: [Amps] AL-811 Tube Swap (score: 1)
- Author: Richard Solomon <dickw1ksz@gmail.com>
- Date: Wed, 28 Apr 2021 15:18:43 -0700
- I am more interested being able to run the Amp key down for prolonged tests. It looks like the swap would be OK. BTW, interesting to note that the AL-811 (3 X 811A) Power Transformer has the same MFJ
- /archives//html/Amps/2021-04/msg00102.html (8,950 bytes)
- 4. Re: [Amps] AL-811 Tube Swap (score: 1)
- Author: Rob Atkinson <ranchorobbo@gmail.com>
- Date: Wed, 28 Apr 2021 18:09:38 -0500
- What are you expecting to achieve by changing the tube type? Rob K5UJ _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinf
- /archives//html/Amps/2021-04/msg00103.html (6,662 bytes)
- 5. Re: [Amps] AL-811 Tube Swap (score: 1)
- Author: Jay Sturtevant <k2ztdx@gmail.com>
- Date: Thu, 29 Apr 2021 11:21:28 -0400
- Could the graphite plate of a 572B transform from a solid to a gas by sublimation? I would want to know a rough probability of damaging the finals (gassy) by driving them with an input using audio co
- /archives//html/Amps/2021-04/msg00104.html (8,477 bytes)
- 6. Re: [Amps] AL-811 Tube Swap (score: 1)
- Author: Nidhog <robrk@nidhog.net>
- Date: Thu, 29 Apr 2021 11:27:44 -0400
- Get out your oscilloscope and look at it. A $25 hamfest special is all you need. Sent from my iPad _______________________________________________ Amps mailing list Amps@contesting.com http://lists.c
- /archives//html/Amps/2021-04/msg00105.html (9,143 bytes)
- 7. Re: [Amps] AL-811 Tube Swap (score: 1)
- Author: Kim Elmore <cw_de_n5op@sbcglobal.net>
- Date: Thu, 29 Apr 2021 10:55:53 -0500
- The temperature for sublimation of graphite is about 4000K. Itll be bright white at that temperature and the envelope will likely be melted. Kim N5OP "People that make music together cannot be enemie
- /archives//html/Amps/2021-04/msg00106.html (9,862 bytes)
- 8. Re: [Amps] AL-811 Tube Swap (score: 1)
- Author: W4BIN <ka4inm@gmail.com>
- Date: Thu, 29 Apr 2021 12:19:09 -0400
- Could the graphite plate of a 572B transform from a solid to a gas by sublimation? I know that carbon has three allotropes, but none are gaseous. If heat could cause carbon to become gaseous it woul
- /archives//html/Amps/2021-04/msg00107.html (8,972 bytes)
- 9. [Amps] AL-811 Tube Swap (score: 1)
- Author: "Jim Thomson" <jim.thom@telus.net>
- Date: Thu, 29 Apr 2021 09:34:05 -0700
- <I have an old AL-811 on the Test Bench <I use when I need a little more starch for <test purposes. <I thought about replacing the 811's with <572B's. <Any pitfalls on that idea ? <Tnx, Dick, W1KSZ P
- /archives//html/Amps/2021-04/msg00108.html (7,694 bytes)
- 10. Re: [Amps] AL-811 Tube Swap (score: 1)
- Author: Alek Petkovic <vk6apk@bigpond.com>
- Date: Fri, 30 Apr 2021 08:19:07 +0800
- The 572Bs will handle anything you throw at them in a AL-811 amplifier. The power transformer won't. 73, Alek, VK6APK. Not claiming to be an experienced contributor. I would want to know a rough prob
- /archives//html/Amps/2021-04/msg00111.html (9,237 bytes)
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