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1. [AMPS] 813's (score: 1): Author: k4gf@worldnet.att.net (james fisher); Date: Sun, 3 Oct 1999 16:56:49 -0400; Thanks to each of you who replied to my question about the 813 input impedance. It looks like the pi will be needed, HAMCALC gives me the values. Perhaps about Christmas you can all hear the amp! 73,; /archives//html/Amps/1999-10/msg00073.html (6,609 bytes)
2. [Amps] 813's (score: 1): Author: "carl s." <carlseye@tampabay.rr.com>; Date: Sat, 27 May 2006 13:44:37 -0400; Can anyone tell me if the 813 tube can be used safely in the horizontal position ??? carl / kz5ca _______________________________________________ Amps mailing list Amps@contesting.com http://lists.co; /archives//html/Amps/2006-05/msg00420.html (6,583 bytes)
3. Re: [Amps] 813's (score: 1): Author: Steve Thompson <g8gsq@eltac.co.uk>; Date: Sat, 27 May 2006 18:46:39 +0100; RCA data says not. Vertical only, either way up. 73, Steve _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2006-05/msg00421.html (6,231 bytes)
4. Re: [Amps] 813's (score: 1): Author: Steve Thompson <g8gsq@eltac.co.uk>; Date: Sat, 27 May 2006 18:49:11 +0100; Additional to previous - this data attributed to RCA says yes, if you get the orientation right. I'm sure that the data I have says not. http://www.nj7p.org/Tube1.php?tube=813 Steve _________________; /archives//html/Amps/2006-05/msg00422.html (7,218 bytes)
5. Re: [Amps] 813's (score: 1): Author: "John Vickers" <wa4tt@nlamerica.com>; Date: Sat, 27 May 2006 14:01:16 -0400; Yep ! Got a pair thats been running that way since 1965. 73, WA4TT _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/a; /archives//html/Amps/2006-05/msg00423.html (7,490 bytes)
6. Re: [Amps] 813's (score: 1): Author: "Peter Voelpel" <df3kv@t-online.de>; Date: Sat, 27 May 2006 20:19:48 +0200; Yes, you can. At least with the kind made by Valvo. Pins 2 and 6 should be vertically orientated then. 73 Peter Can anyone tell me if the 813 tube can be used safely in the horizontal position ??? ca; /archives//html/Amps/2006-05/msg00425.html (7,384 bytes)
7. Re: [Amps] 813's (score: 1): Author: "Mike Sawyer" <w3slk@uplink.net>; Date: Sat, 27 May 2006 14:38:09 -0400; I'm wondering what RCA manual that is referenced in. I have an ET-4336F that was built for the Royal Navy back in 1944 by RCA that uses two RCA 813's mounted horizontally. So for shock, I still think; /archives//html/Amps/2006-05/msg00426.html (7,801 bytes)
8. Re: [Amps] 813's (score: 1): Author: "k7fm" <k7fm@teleport.com>; Date: Sat, 27 May 2006 12:01:54 -0700; The RCA Transmitting Tubes Technical Manual TT-5 states the following: OPERATING CONSIDERATIONS "The 813 ... may be operated in vertical position with base up or down, or in horizontal position with; /archives//html/Amps/2006-05/msg00427.html (7,864 bytes)
9. Re: [Amps] 813's (score: 1): Author: GGLL <nagato@arnet.com.ar>; Date: Sat, 27 May 2006 16:03:49 -0300; carl s. escribió: Yes, I saw many work in that way, no problems; the filament must be in the vertical plane. And the socket pins must have good tension, because as a somewhat long tube as it i; /archives//html/Amps/2006-05/msg00428.html (7,574 bytes)
10. Re: [Amps] 813's (score: 1): Author: "Phil Clements" <philc@texascellnet.com>; Date: Sat, 27 May 2006 14:11:49 -0500; Thanks, Peter, I knew someone would remember the proper socket mounting orientation. I ran a pair of 813's mobile for several years, riding side-saddle under the dash. That was in the '60's in the e; /archives//html/Amps/2006-05/msg00429.html (8,206 bytes)
11. Re: [Amps] 813's (score: 1): Author: Vic K2VCO <vic@rakefet.com>; Date: Sat, 27 May 2006 12:45:55 -0700; There was an article in ARRL handbooks of the late '50s or early '60s describing a series of single-band amplifiers each using a pair of 813's. Construction was simple, with a pair of chassis behind; /archives//html/Amps/2006-05/msg00430.html (8,068 bytes)
12. Re: [Amps] 813's (score: 1): Author: Bob Sullivan <robert@isquare.com>; Date: Sat, 27 May 2006 16:12:01 -0400; Carl, Yes, you can. One of the neatest amplifiers every made utilized a single 813 positioned horizontally, - the Central Electronics 600L. Look at my restoration here: http://www.isquare.com/persona; /archives//html/Amps/2006-05/msg00431.html (8,041 bytes)
13. Re: [Amps] 813's (score: 1): Author: Chris Pedder <chris@g3vbl.co.uk>; Date: Sat, 27 May 2006 20:32:15 +0000; The ARRL publication "Single Sideband for the Radio Amateur" Fifth Edition 1970 also has these amps on pp138-141. Chris G3VBL _______________________________________________ Amps mailing list Amps@co; /archives//html/Amps/2006-05/msg00432.html (8,639 bytes)
14. Re: [Amps] 813's (score: 1): Author: Steve Thompson <g8gsq@eltac.co.uk>; Date: Sat, 27 May 2006 22:12:33 +0100; It came with a half built 2 x 813 amp I bought. I was going from memory, but it's only a week or so since I dug it out to check something, and I recall lookin at the mounting info. while thinking abo; /archives//html/Amps/2006-05/msg00433.html (8,466 bytes)
15. Re: [Amps] 813's (score: 1): Author: "Ed Swynar" <gswynar@durham.net>; Date: Sat, 27 May 2006 17:29:59 -0500; Re. ANY horizontally-mounted tube, the trick is to ensure that the expanded filament (expanded due to heat) doesn't sag down & short-out against the grid... Warnings about aligning pin "X" & pin "Y"; /archives//html/Amps/2006-05/msg00434.html (10,081 bytes)
16. Re: [Amps] 813's (score: 1): Author: gdaught6@stanford.edu; Date: Sat, 27 May 2006 18:38:16 -0700; I used (as did many others) the ART-13 military transmitter which used an 813 in the horizontal position. It was a Collins rig, if I recall correctly (it was in 1957-1964 for gosh sake! That's a whil; /archives//html/Amps/2006-05/msg00437.html (8,508 bytes)
17. Re: [Amps] 813's (score: 1): Author: Ian White GM3SEK <gm3sek@ifwtech.co.uk>; Date: Sun, 28 May 2006 08:54:14 +0100; WARNING: Do not operate 6ft rack on its side. -- 73 from Ian GM3SEK _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/; /archives//html/Amps/2006-05/msg00440.html (8,864 bytes)
18. Re: [Amps] 813's (score: 1): Author: Gudguyham@aol.com; Date: Sun, 28 May 2006 05:13:24 EDT; The ARRL publication "Single Sideband for the Radio Amateur" Fifth Edition 1970 also has these amps on pp138-141. I too have seen these amp articles and indeed the tubes were mounted horizontally by; /archives//html/Amps/2006-05/msg00441.html (9,524 bytes)
19. Re: [Amps] 813's (score: 1): Author: Gudguyham@aol.com; Date: Sun, 28 May 2006 05:15:55 EDT; The tube must be properly orientated - I don't recall off hand what that is but it's out there in the literature. Could this mean "the final operating position in regard to the way it was to be used; /archives//html/Amps/2006-05/msg00442.html (7,900 bytes)
20. Re: [Amps] 813's (score: 1): Author: Gudguyham@aol.com; Date: Sun, 28 May 2006 05:27:57 EDT; _http://www.isquare.com/personal_pages/600L.htm_ (http://www.isquare.com/personal_pages/600L.htm) Took a look at the restoration on this amp, very nice job. Am I correct in assuming they were NOT usi; /archives//html/Amps/2006-05/msg00443.html (8,416 bytes)

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