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21. Re: [Amps] 8877 (score: 1): Author: Gary K9GS <garyk9gs@wi.rr.com>; Date: Sun, 18 Nov 2012 08:43:09 -0600; The Alpha 9500.... http://www.rfconcepts.com/PRODUCTS/New-Products/Alpha-9500-Autotune-Full-Legal-Limit-Linear-Amplifier OTOH Ive had no trouble finding full output MRI pulls or NOS Eimacs when neede; /archives//html/Amps/2012-11/msg00118.html (11,426 bytes)
22. Re: [Amps] 8877 (score: 1): Author: krishna kanakasapapathi <kkanakas@cisco.com>; Date: Mon, 19 Nov 2012 09:43:13 -0500; Alpha 9500 ships with an import 3cx1500A7. One needs to pay extra to have the Eimac instead of the import tube. Now, are ebay medical pulls reliable for a spare 3CPX1500A7? Any other non-ebay source,; /archives//html/Amps/2012-11/msg00126.html (11,774 bytes)
23. Re: [Amps] 8877 (score: 1): Author: "Jim W7RY" <w7ry@centurytel.net>; Date: Mon, 19 Nov 2012 08:04:01 -0800; You are incorrect. The have them open at Dayton. It is NOT and Eimac tube. It's an import. Probably from China. 73 Jim W7RY --Original Message-- From: Kevin Stover Sent: Sunday, November 18, 2012 6:3; /archives//html/Amps/2012-11/msg00132.html (12,080 bytes)
24. [Amps] 8877 (score: 1): Author: "William Osborne" <wosborne44@gmail.com>; Date: Sun, 23 Jan 2022 13:08:42 -0600; What does the list think of various 8877 sources and their prices? Thinking of buying a used 9500. Thanks, Bill--K5ZQ _______________________________________________ Amps mailing list Amps@contestin; /archives//html/Amps/2022-01/msg00069.html (6,718 bytes)
25. Re: [Amps] 8877 (score: 1): Author: Carl Braun <Carl.Braun@cattron.com>; Date: Sun, 23 Jan 2022 19:32:40 +0000; Bill Buying 8877s could be a crapshoot but the recent (used) tubes Ive purchased have been spot on with the descriptions given to me by the sellers. Ive been lucky! I received detailed reports from t; /archives//html/Amps/2022-01/msg00071.html (9,522 bytes)
26. Re: [Amps] 8877 (score: 1): Author: Rob Atkinson <ranchorobbo@gmail.com>; Date: Mon, 24 Jan 2022 09:28:29 -0600; Eimac blew it a couple times I know of. The Utah plant made 3-500s that had graphite anodes spot welded to a cone that attached to the vertical rod passing through the glass seal. Not sure what the; /archives//html/Amps/2022-01/msg00073.html (7,553 bytes)
27. Re: [Amps] 8877 (score: 1): Author: Douglas L via Amps <amps@contesting.com>; Date: Mon, 24 Jan 2022 17:35:02 -0500; I had lot of trouble with the Eimac 3-500 in the mid 1980s. I was operating a commercial ship to shore coastal station using a Scientific Radio 500KHz transmitter which used them. As Rob described, t; /archives//html/Amps/2022-01/msg00074.html (10,034 bytes)
28. Re: [Amps] 8877 (score: 1): Author: RCM <robrk@nidhog.net>; Date: Mon, 24 Jan 2022 17:55:43 -0500; My feeble brain seems to remember issues with 8877s, in the 80s. Serial numbers or date codes. Might be worth a search, if cleaning out a basement. _______________________________________________ Am; /archives//html/Amps/2022-01/msg00075.html (7,137 bytes)
29. Re: [Amps] 8877 (score: 1): Author: AB2E Darrell <ab2e@hotmail.com>; Date: Mon, 24 Jan 2022 23:03:20 +0000; Just saw the ad in the new QST today for Ameritron AL-1500 w/Eimac 8877, it's now $7000 ! 73 Darrell AB2E My feeble brain seems to remember issues with 8877s, in the 80s. Serial numbers or date codes; /archives//html/Amps/2022-01/msg00076.html (9,026 bytes)
30. Re: [Amps] 8877 (score: 1): Author: Richard Solomon <dickw1ksz@gmail.com>; Date: Mon, 24 Jan 2022 16:36:24 -0700; Makes the SPE 1.5K look very attractive. 73, Dick, W1KSZ _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2022-01/msg00077.html (9,673 bytes)
31. Re: [Amps] 8877 (score: 1): Author: "Paul Christensen" <w9ac@arrl.net>; Date: Mon, 24 Jan 2022 19:07:16 -0500; I use this as a guide when purchasing used 8877s: http://lists.contesting.com/archives//html/Amps/1997-12/msg00088.html I have my own story to tell for another time that nearly resulted in me being; /archives//html/Amps/2022-01/msg00078.html (8,166 bytes)
32. Re: [Amps] 8877 (score: 1): Author: "Tim Duffy" <k3lr@k3lr.com>; Date: Mon, 24 Jan 2022 19:11:01 -0500; I have 25 amplifiers here that use 8877s. It is a really good tube for amateur use at 1500 watts output. Some of my amplifiers have 8877s with date codes in the 1970s and they are still going strong.; /archives//html/Amps/2022-01/msg00079.html (8,512 bytes)
33. Re: [Amps] 8877 (score: 1): Author: Jim W7RY <jimw7ry@gmail.com>; Date: Mon, 24 Jan 2022 20:15:24 -0600; Agreed 100% Tim. 73 Jim W7RY Some of my amplifiers have 8877s with date codes in the 1970s and they are still going strong. With care - 8877s last a long time. I built a 8877 tube tester several year; /archives//html/Amps/2022-01/msg00080.html (9,165 bytes)
34. Re: [Amps] 8877 (score: 1): Author: Kim Elmore <cw_de_n5op@sbcglobal.net>; Date: Mon, 24 Jan 2022 21:40:03 -0600; Holy high voltage!!! $7k for an AL1500 with an 8877?! I have an AL1200 that I got cheap several years ago. It needed some work and in the process I installed Ameritrons QSK-5 PIN diode QSK switch. Th; /archives//html/Amps/2022-01/msg00081.html (8,482 bytes)
35. Re: [Amps] 8877 (score: 1): Author: Jim W7RY <jimw7ry@gmail.com>; Date: Mon, 24 Jan 2022 21:45:31 -0600; It needed some work and in the process I installed Ameritrons QSK-5 PIN diode QSK switch. The AL1200 isnt as easy to drive as the 1500, so I changed a primary tap, added more filter capacitors to the; /archives//html/Amps/2022-01/msg00082.html (9,297 bytes)
36. Re: [Amps] 8877 (score: 1): Author: AB2E Darrell <ab2e@hotmail.com>; Date: Tue, 25 Jan 2022 03:48:25 +0000; Hi Kim, Better sit down then LOL. P17 of the Feb QST, the AL-1200 w/Eimac tube is $6000 ! Guard that tube! 73 Darrell AB2E Holy high voltage!!! $7k for an AL1500 with an 8877?! I have an AL1200 that; /archives//html/Amps/2022-01/msg00083.html (9,972 bytes)
37. Re: [Amps] 8877 (score: 1): Author: Kim Elmore <cw_de_n5op@sbcglobal.net>; Date: Mon, 24 Jan 2022 21:55:41 -0600; Fortunately I have a spare 3CX1200A7! Kim N5OP _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps; /archives//html/Amps/2022-01/msg00084.html (10,031 bytes)
38. Re: [Amps] 8877 (score: 1): Author: AB2E Darrell <ab2e@hotmail.com>; Date: Tue, 25 Jan 2022 03:59:36 +0000; That's great Kim. I sold my Henry 3K-Ultra back in 2016, and it had the same final. Should maybe have kept it but it was a bear to move. 73 Darrell AB2E Fortunately I have a spare 3CX1200A7! Kim N5OP; /archives//html/Amps/2022-01/msg00085.html (10,951 bytes)
39. Re: [Amps] 8877 (score: 1): Author: Kim Elmore <cw_de_n5op@sbcglobal.net>; Date: Mon, 24 Jan 2022 23:20:52 -0600; This thing seems to weigh a ton, too. I think its billed at 77 lbs but its a heavy 77 lbs. Yet my dads WRL Globe Champion 350 is worse at something like 110 lbs. Kim N5OP ____________________________; /archives//html/Amps/2022-01/msg00086.html (12,095 bytes)
40. Re: [Amps] 8877 (score: 1): Author: Rob Atkinson <ranchorobbo@gmail.com>; Date: Tue, 25 Jan 2022 06:00:56 -0600; Thanks to Doug WA1TUT for the memory of Scientific Radio. Harris and S.R. made continuous duty power amplifiers using 3-500s or 3-1000s that dwarfed the ham gear. Thanks to Paul W9AC for that Dick Eh; /archives//html/Amps/2022-01/msg00087.html (8,528 bytes)

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