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1. [Amps] 813 Amplifier Article (score: 1): Author: Bill Smith <ko4nrbs@yahoo.com>; Date: Wed, 30 Mar 2011 16:22:55 -0700 (PDT); Is this design still ok for the 813. It was written long ago I think. http://jlandrigan.com/files/813%20Grounded%20Grid%20Amplifier/GE%20Ham%20News%20813%20GG%20article.pdf I have a bunch of these tu; /archives//html/Amps/2011-03/msg00275.html (7,275 bytes)
2. Re: [Amps] 813 Amplifier Article (score: 1): Author: Vic K2VCO <vic@rakefet.com>; Date: Wed, 30 Mar 2011 16:33:57 -0700; Looks good to me. If you have more tubes than you need, I'm accumulating NOS ones to build yet another 813 amplifier. I would like to build one with 4 of them this time! -- Vic, K2VCO Fresno CA http:; /archives//html/Amps/2011-03/msg00276.html (7,705 bytes)
3. Re: [Amps] 813 Amplifier Article (score: 1): Author: "Paul Christensen" <w9ac@arrl.net>; Date: Wed, 30 Mar 2011 19:45:25 -0400; Vic's 2 X 813 amp gets my vote for the "coolest-looking" amp ever made. Check it out on his website and see if you don't agree. Classic round metering, jeweled lamps, RCA knobs, heavy-duty toggle swi; /archives//html/Amps/2011-03/msg00277.html (8,772 bytes)
4. Re: [Amps] 813 Amplifier Article (score: 1): Author: Vic K2VCO <vic@rakefet.com>; Date: Wed, 30 Mar 2011 16:55:35 -0700; Thank you for your comments! The problem is that the schematic is UGLY and drawn in pencil. With lots of erasures! Also the circuit is based on what parts I happened to have, and also is CW only (unl; /archives//html/Amps/2011-03/msg00278.html (9,378 bytes)
5. Re: [Amps] 813 Amplifier Article (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Wed, 30 Mar 2011 20:06:33 -0400; Id use sockets with the shield base which is to be solidly grounded; it will ensure stability. Use a muffin fan on the tube glass instead. Wind your own filament choke. That B&W network is pricey if; /archives//html/Amps/2011-03/msg00279.html (9,060 bytes)
6. Re: [Amps] 813 Amplifier Article (score: 1): Author: Commander John <crazytvjohn@yahoo.com>; Date: Wed, 30 Mar 2011 17:29:26 -0700 (PDT); It is from 1959 Ge Ham News. john W9ZY ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Is this design still ok for the 813. It was written long ago I think. http://jlandrigan.com/files/813%20Grounded%20Grid%20Amplifie; /archives//html/Amps/2011-03/msg00281.html (8,229 bytes)
7. Re: [Amps] 813 Amplifier Article (score: 1): Author: "Hsu" <hsu4qro@gmail.com>; Date: Thu, 31 Mar 2011 08:25:18 +0800; You need modify its Pi network in 10mtrs, if not this amplifier will not work in 10 mtrs ,I use Chinese 813, but withuout experience in American 813. 73!Hsu -- Original Message -- From: "Vic K2VCO" <; /archives//html/Amps/2011-03/msg00283.html (11,236 bytes)
8. Re: [Amps] 813 Amplifier Article (score: 1): Author: "R. Morris" <robrk@nidhog.net>; Date: Wed, 30 Mar 2011 22:35:48 -0400; My '59 and '60 Handbooks are the bottom box, but B&W had the exact layout on the market as a factory amp. Lived five miles from the factory. Could walk in and buy stuff. -- This message has been scan; /archives//html/Amps/2011-03/msg00285.html (8,095 bytes)
9. Re: [Amps] 813 Amplifier Article (score: 1): Author: "Fuqua, Bill L" <wlfuqu00@uky.edu>; Date: Wed, 30 Mar 2011 23:31:47 -0400; Looks alot like my B&W L-1000 amplifier that I have stored away. I don't have a B&W power supply for it but that is no problem. Just another project. Maybe I need to hold my own hamfest flea market s; /archives//html/Amps/2011-03/msg00286.html (9,282 bytes)
10. Re: [Amps] 813 Amplifier Article (score: 1): Author: "WA3GIN" <wa3gin@comcast.net>; Date: Thu, 31 Mar 2011 00:12:33 -0400; Here is the URL for the L-1000 operators manual... interestingly, no pics of the front of the amp in the manual, just the guts. Anyone have pics of the front of the amp? 73, dave wa3gin _____________; /archives//html/Amps/2011-03/msg00287.html (8,691 bytes)
11. Re: [Amps] 813 Amplifier Article (score: 1): Author: "WA3GIN" <wa3gin@comcast.net>; Date: Thu, 31 Mar 2011 00:14:49 -0400; Here it is http://bama.edebris.com/manuals/b&w/l1000a/ _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2011-03/msg00288.html (9,597 bytes)
12. Re: [Amps] 813 Amplifier Article (score: 1): Author: "Fuqua, Bill L" <wlfuqu00@uky.edu>; Date: Thu, 31 Mar 2011 00:17:52 -0400; I have thought of replacing the 813's with 4E27A's. Has anyone used 4E27A's in grounded grid. They are pentodes with 125 watts plate dissipation and wire the filiments in series since they are 5V. Th; /archives//html/Amps/2011-03/msg00289.html (10,384 bytes)
13. Re: [Amps] 813 Amplifier Article (score: 1): Author: Ron Youvan <ka4inm@tampabay.rr.com>; Date: Thu, 31 Mar 2011 08:57:03 -0400; http://www.tubecollector.org/4e27.htm says the 4E27 has a 75 Watts plate dissipation. ??? I believe the 4E27 is more rare than 813s. -- Ron KA4INM - Endless Loop: n. see Loop, Endless. Loop, Endless:; /archives//html/Amps/2011-03/msg00290.html (8,955 bytes)
14. Re: [Amps] 813 Amplifier Article (score: 1): Author: Bill Fuqua <wlfuqu00@uky.edu>; Date: Thu, 31 Mar 2011 09:58:59 -0400; The 4E27A/ 5-125A has 125 watt plate dissipation. I have a number of them. More than the older version. 73 Bill wa4lav _______________________________________________ Amps mailing list Amps@contestin; /archives//html/Amps/2011-03/msg00291.html (9,875 bytes)
15. Re: [Amps] 813 Amplifier Article (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Thu, 31 Mar 2011 10:33:38 -0400; I notice 4E27A's being ignored on Fleabay and at hamfests. My only experience with them was a couple of 6M AM rigs I built to get some activity on the band. They sure did glow nice. The H&K 257B is a; /archives//html/Amps/2011-03/msg00292.html (9,608 bytes)
16. Re: [Amps] 813 Amplifier Article (score: 1): Author: Rob Atkinson <ranchorobbo@gmail.com>; Date: Thu, 31 Mar 2011 10:47:47 -0500; Glad to hear it. I had thought 5-125 was almost unobtanium; even harder to find than 5-500s and 4-65As. The only ham rig I have ever heard of, that used the 5-125 was the Eldico TR-1TV which used one; /archives//html/Amps/2011-03/msg00296.html (8,587 bytes)
17. Re: [Amps] 813 Amplifier Article (score: 1): Author: <jerryjtb@comcast.net>; Date: Thu, 31 Mar 2011 12:01:57 -0400; Should anyone be interested I have a new pair of Eimac 4E27 tubes. They were stored for at least 25 years. Jerry W0ZD/3 I notice 4E27A's being ignored on Fleabay and at hamfests. My only experience w; /archives//html/Amps/2011-03/msg00297.html (11,637 bytes)
18. Re: [Amps] 813 Amplifier Article (score: 1): Author: "Diane & Edward Swynar" <deswynar@xplornet.ca>; Date: Thu, 31 Mar 2011 12:03:25 -0500; Hi Rob, D'you want RARE...? How about those Eimac water-cooled tubes that were used in mobile linear amplifier designs by Bill Orr in the late 50's/early 60's...?! I believe their type designations w; /archives//html/Amps/2011-03/msg00298.html (10,430 bytes)
19. Re: [Amps] 813 Amplifier Article (score: 1): Author: gdaught6@stanford.edu; Date: Thu, 31 Mar 2011 09:05:47 -0700; Rob, K5UJ wrote... I've got two NOS, sealed in their plastic envelopes, 4-65A's. If anyone is interested, make an offer. 73, George T Daughters, K6GT CU in the California QSO Party (CQP) October 1-2,; /archives//html/Amps/2011-03/msg00299.html (8,285 bytes)
20. Re: [Amps] 813 Amplifier Article (score: 1): Author: "Carl" <km1h@jeremy.mv.com>; Date: Thu, 31 Mar 2011 12:17:13 -0400; 4CW600A _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2011-03/msg00300.html (11,408 bytes)

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