I have many concerns over the 2 tube 813 transmitter. Several failure modes could destroy both tubes. It is overly simplified to reduce component count.
73 Bill wa4lav ________________________________ From: Boatanchors <[email protected]> on behalf of R Purkey <[email protected]> Sent: Thursday, August 30, 2018 12:26 PM To: [email protected] Subject: Re: [Boatanchors] RCA Ham Tips Vol 2 Issue 1 (1939) forward has info on the 813. I also love that tube. https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fn4trb.com%2FAmateurRadio%2FRCA_Ham_Tips%2Frca_ham_tips.htm&data=02%7C01%7Cwlfuqu00%40uky.edu%7C9a876ddc3a8a44895dc808d60e954e44%7C2b30530b69b64457b818481cb53d42ae%7C0%7C0%7C636712431760822081&sdata=X151ehKkjKLc4QniVswbQHkELvswZQM4I%2BceIc%2BxTNk%3D&reserved=0 RCA Ham Tips - N4TRB Amateur Radio<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fn4trb.com%2FAmateurRadio%2FRCA_Ham_Tips%2Frca_ham_tips.htm&data=02%7C01%7Cwlfuqu00%40uky.edu%7C9a876ddc3a8a44895dc808d60e954e44%7C2b30530b69b64457b818481cb53d42ae%7C0%7C0%7C636712431760822081&sdata=X151ehKkjKLc4QniVswbQHkELvswZQM4I%2BceIc%2BxTNk%3D&reserved=0> n4trb.com RCA Ham Tips. Click on the Volume Number or cover image to display the full issue in PDF format. Unlike GE Ham News, this isn't quite a complete set of the RCA publications. ________________________________ From: Boatanchors <[email protected]> on behalf of [email protected] <[email protected]> Sent: Thursday, August 30, 2018 11:00 AM To: [email protected] Subject: Boatanchors Digest, Vol 93, Issue 12 Send Boatanchors mailing list submissions to [email protected] To subscribe or unsubscribe via the World Wide Web, visit https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpuck.nether.net%2Fmailman%2Flistinfo%2Fboatanchors&data=02%7C01%7Cwlfuqu00%40uky.edu%7C9a876ddc3a8a44895dc808d60e954e44%7C2b30530b69b64457b818481cb53d42ae%7C0%7C0%7C636712431760822081&sdata=aA96eM%2FK6UCsrg3OoKoUwDwFrRc9pH5dFkOhmglHIow%3D&reserved=0 Boatanchors Info Page - puck.nether.net<https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpuck.nether.net%2Fmailman%2Flistinfo%2Fboatanchors&data=02%7C01%7Cwlfuqu00%40uky.edu%7C9a876ddc3a8a44895dc808d60e954e44%7C2b30530b69b64457b818481cb53d42ae%7C0%7C0%7C636712431760822081&sdata=aA96eM%2FK6UCsrg3OoKoUwDwFrRc9pH5dFkOhmglHIow%3D&reserved=0> puck.nether.net To see the collection of prior postings to the list, visit the Boatanchors Archives.. Using Boatanchors: To post a message to all the list members, send email to [email protected]. or, via email, send a message with subject or body 'help' to [email protected] You can reach the person managing the list at [email protected] When replying, please edit your Subject line so it is more specific than "Re: Contents of Boatanchors digest..." Today's Topics: 1. Old 813 XMTR Circuit (Wilson Lamb) 2. Re: Old 813 XMTR Circuit (Bob Wilson) ---------------------------------------------------------------------- Message: 1 Date: Wed, 29 Aug 2018 17:49:13 -0400 (EDT) From: Wilson Lamb <[email protected]> To: boatanchors <[email protected]> Subject: [Boatanchors] Old 813 XMTR Circuit Message-ID: <[email protected]> Content-Type: text/plain; charset=utf-8 Has anyone ever seen an operating example of the RCA Ham The 813 xmtr from 1942?? https://na01.safelinks.protection.outlook.com/?url=www.nj7p.org%2FManuals%2FPDFs%2FTubes%2FRCA-gfat-1942.pdf&data=02%7C01%7Cwlfuqu00%40uky.edu%7C9a876ddc3a8a44895dc808d60e954e44%7C2b30530b69b64457b818481cb53d42ae%7C0%7C0%7C636712431760822081&sdata=Wq2HM4WYGAdrcDybJEkpE5CmfIaWTj0AZ7U%2Fw%2BYldLs%3D&reserved=0<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.nj7p.org%2FManuals%2FPDFs%2FTubes%2FRCA-gfat-1942.pdf&data=02%7C01%7Cwlfuqu00%40uky.edu%7C9a876ddc3a8a44895dc808d60e954e44%7C2b30530b69b64457b818481cb53d42ae%7C0%7C0%7C636712431760832094&sdata=CqbcCYHQW5JklzlVxxwhrFrry%2FqctFY5WpgWA61GaL8%3D&reserved=0> Wilson W4BOH ------------------------------ Message: 2 Date: Wed, 29 Aug 2018 17:38:45 -0500 From: "Bob Wilson" <[email protected]> To: "'Wilson Lamb'" <[email protected]>, "'boatanchors'" <[email protected]> Subject: Re: [Boatanchors] Old 813 XMTR Circuit Message-ID: <[email protected]> Content-Type: text/plain; charset="us-ascii" No, but I have a lot of respect for the 813 tube. I once had a GG linear using two of them. It was OK but then I modified the PS to up the voltage to where it should have caused problem and it was great. 3000 volts at 500MA and 1000 watts out. No color on the tube. This was 75M only. A very tough tube. Bob WA4ZZW -----Original Message----- From: Boatanchors [mailto:[email protected]] On Behalf Of Wilson Lamb Sent: Wednesday, August 29, 2018 4:49 PM To: boatanchors Subject: [Boatanchors] Old 813 XMTR Circuit Has anyone ever seen an operating example of the RCA Ham The 813 xmtr from 1942?? https://na01.safelinks.protection.outlook.com/?url=www.nj7p.org%2FManuals%2FPDFs%2FTubes%2FRCA-gfat-1942.pdf&data=02%7C01%7Cwlfuqu00%40uky.edu%7C9a876ddc3a8a44895dc808d60e954e44%7C2b30530b69b64457b818481cb53d42ae%7C0%7C0%7C636712431760832094&sdata=E0FHrqfA%2Bi6Wfz6Ap5WAb%2FKmQAnEJGQhWqhlwmFqM9g%3D&reserved=0<https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.nj7p.org%2FManuals%2FPDFs%2FTubes%2FRCA-gfat-1942.pdf&data=02%7C01%7Cwlfuqu00%40uky.edu%7C9a876ddc3a8a44895dc808d60e954e44%7C2b30530b69b64457b818481cb53d42ae%7C0%7C0%7C636712431760832094&sdata=CqbcCYHQW5JklzlVxxwhrFrry%2FqctFY5WpgWA61GaL8%3D&reserved=0> Wilson W4BOH _______________________________________________ Boatanchors mailing list [email protected] https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpuck.nether.net%2Fmailman%2Flistinfo%2Fboatanchors&data=02%7C01%7Cwlfuqu00%40uky.edu%7C9a876ddc3a8a44895dc808d60e954e44%7C2b30530b69b64457b818481cb53d42ae%7C0%7C0%7C636712431760832094&sdata=33TrlB9whWr6JzrvQah69uN6ARZ%2BQrGGN7uMXspQ3gE%3D&reserved=0 ------------------------------ Subject: Digest Footer _______________________________________________ Boatanchors mailing list [email protected] https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpuck.nether.net%2Fmailman%2Flistinfo%2Fboatanchors&data=02%7C01%7Cwlfuqu00%40uky.edu%7C9a876ddc3a8a44895dc808d60e954e44%7C2b30530b69b64457b818481cb53d42ae%7C0%7C0%7C636712431760832094&sdata=33TrlB9whWr6JzrvQah69uN6ARZ%2BQrGGN7uMXspQ3gE%3D&reserved=0 ------------------------------ End of Boatanchors Digest, Vol 93, Issue 12 ******************************************* _______________________________________________ Boatanchors mailing list [email protected] https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fpuck.nether.net%2Fmailman%2Flistinfo%2Fboatanchors&data=02%7C01%7Cwlfuqu00%40uky.edu%7C9a876ddc3a8a44895dc808d60e954e44%7C2b30530b69b64457b818481cb53d42ae%7C0%7C0%7C636712431760832094&sdata=33TrlB9whWr6JzrvQah69uN6ARZ%2BQrGGN7uMXspQ3gE%3D&reserved=0 _______________________________________________ Boatanchors mailing list [email protected] https://puck.nether.net/mailman/listinfo/boatanchors
