- 61. [AMPS] Acom 2000A amp by Finnfet? (score: 1)
- Author: gdaught6@leland.Stanford.EDU (George T. Daughters)
- Date: Mon, 8 Mar 1999 08:39:11 +0008
- Hi all, Not hardly, if, as Morel says, it uses 4cx800's. 73, George T. Daughters, K6GT -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests: a
- /archives//html/Amps/1999-03/msg00168.html (7,331 bytes)
- 62. [AMPS] tetrode conversions/construction (score: 1)
- Author: gdaught6@leland.Stanford.EDU (George T. Daughters)
- Date: Fri, 12 Mar 1999 11:24:20 +0008
- Hi All, I've gotten several inquiries regarding building or converting HF amps using tetrodes such as Svetlana's 4cx400a, 4cx800a and 4cx1600b, as well as others. The optimum way to handle such a pro
- /archives//html/Amps/1999-03/msg00259.html (7,855 bytes)
- 63. [AMPS] Eimac chimney available (score: 1)
- Author: gdaught6@leland.Stanford.EDU (gdaught6@leland.Stanford.EDU)
- Date: Sun, 14 Mar 1999 17:01:05 +0000
- Hi all, I have an Eimac SK-506 chimney available. It's listed as the correct one for the 4-1000A. It's unused. Make an offer. 73, George T. Daughters, K6GT -- FAQ on WWW: http://www.contesting.com/am
- /archives//html/Amps/1999-03/msg00291.html (6,776 bytes)
- 64. [AMPS] HV on tube w/o filament voltage (score: 1)
- Author: gdaught6@leland.Stanford.EDU (George T. Daughters)
- Date: Mon, 29 Mar 1999 09:38:32 +0008
- Jon wrote... It shouldn't hurt the tube(s) at all. This has historically been a way to have a separate amp on every band. The HV doesn't need to be switched: you just light the filaments of the band
- /archives//html/Amps/1999-03/msg00668.html (8,107 bytes)
- 65. [AMPS] Re:HV on tube w/o filament voltage (score: 1)
- Author: gdaught6@leland.Stanford.EDU (George T. Daughters)
- Date: Mon, 29 Mar 1999 09:44:59 +0008
- Mike wrote... They may have misunderstood your question, or they are just "covering their posteriors." (Their spec sheet says no operating potentials until the warm up time is complete) I do exactly
- /archives//html/Amps/1999-03/msg00669.html (8,627 bytes)
- 66. [AMPS] Construction techniques (score: 1)
- Author: gdaught6@leland.Stanford.EDU (George T. Daughters)
- Date: Wed, 17 Feb 1999 08:49:52 +0008
- Peter wrote... A magnet can be helpful, the stronger the better. I've even seen steel shavings pulled out of eyes this way. 73, George T. Daughters, K6GT -- FAQ on WWW: http://www.contesting.com/ampf
- /archives//html/Amps/1999-02/msg00446.html (7,505 bytes)
- 67. [AMPS] SB220 rebuild (score: 1)
- Author: gdaught6@leland.Stanford.EDU (George T. Daughters)
- Date: Tue, 23 Feb 1999 15:13:24 +0008
- Hi all, OK. If it's going to become a frequently-used term on this reflector, I have to be true to my (very weak) medical and (less weak) English training, and offer the correct version... lobotomy..
- /archives//html/Amps/1999-02/msg00637.html (7,702 bytes)
- 68. [AMPS] Vac Variable Mounting (score: 1)
- Author: gdaught6@leland.Stanford.EDU (George T. Daughters)
- Date: Fri, 22 Jan 1999 09:24:31 +0008
- Hi all, km1h wrote... This seems to work really well. With a little forethought and planning, the strap (low inductance, and physically "noodly" in two dimensions... stiffer in the other) can be atta
- /archives//html/Amps/1999-01/msg00321.html (7,506 bytes)
- 69. [AMPS] Tank coil question & other stuff (score: 1)
- Author: gdaught6@leland.Stanford.EDU (George T. Daughters)
- Date: Fri, 4 Dec 1998 08:49:07 +0008
- hi doug, as i recall, the 195-1 was rated by the mfg. at 500 watts. they also made a 195-2, with a pretty hefty tubing coil for the high bands which was rated at 1kw. i don't have my data sheet with
- /archives//html/Amps/1998-12/msg00046.html (8,181 bytes)
- 70. [AMPS] Re: 4cx250b output (score: 1)
- Author: gdaught6@leland.Stanford.EDU (George T. Daughters)
- Date: Fri, 18 Dec 1998 08:43:53 +0008
- hi ian and all, and run cool, and like the energizer bunny, keep running, and running, and running. best wishes for a happy holiday season and qrm-free new year. 73, George T. Daughters, K6GT -- FAQ
- /archives//html/Amps/1998-12/msg00258.html (9,015 bytes)
- 71. [AMPS] Amp for RTTY? (score: 1)
- Author: gdaught6@leland.Stanford.EDU (George T. Daughters)
- Date: Mon, 9 Nov 1998 09:11:17 +0008
- hi carl (and others), carl wrote... too fragile in what way? i'm still running the first (and only) 4cx1600b that i used in the building, development, and testing of my 1600b amp. it experienced a co
- /archives//html/Amps/1998-11/msg00131.html (8,220 bytes)
- 72. [AMPS] (Fwd) Swan 1200X (score: 1)
- Author: gdaught6@leland.Stanford.EDU (George T. Daughters)
- Date: Tue, 17 Nov 1998 08:31:12 +0008
- hi all, i'm forwarding a message i received from a friend. can anyone help? i'm not familiar with the swan 1200x. please reply direct to Jim... wa6dij@ix.netcom.com ** I have a question about a Swan
- /archives//html/Amps/1998-11/msg00239.html (7,674 bytes)
- 73. [AMPS] rectifier diode info. sought (score: 1)
- Author: gdaught6@leland.Stanford.EDU (gdaught6@leland.Stanford.EDU)
- Date: Tue, 15 Sep 1998 15:39:58 +0000
- hi all, i have four rectifier diodes, and no data on them. can anybody look in an old catalog or elsewhere and tell me PIV and current ratings? they are RCA "CR 206" each about 1/4 x 3/4 x 3 inches,
- /archives//html/Amps/1998-09/msg00200.html (7,010 bytes)
- 74. [AMPS] L7 now working, have ops question (score: 1)
- Author: gdaught6@leland.Stanford.EDU (George T. Daughters)
- Date: Fri, 7 Aug 1998 11:35:39 +0008
- hi steve, you wrote.... hmmm. 2650 v @ 0.32 a = 848 watts from the HV supply, and say 100 of so-called "feed thru" power from the 756 exciter = 948 watts... and you're getting as much as 1150 out!! i
- /archives//html/Amps/1998-08/msg00059.html (8,427 bytes)
- 75. [AMPS] MLA-2500 (score: 1)
- Author: gdaught6@leland.Stanford.EDU (George T. Daughters)
- Date: Wed, 1 Jul 1998 13:33:05 +0008
- hi steve, try the svetlana web page, and look for their technical app. notes. 73, George T. Daughters, K6GT -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Admin
- /archives//html/Amps/1998-07/msg00011.html (7,275 bytes)
- 76. [AMPS] Pulse rating in vacuum tubes (score: 1)
- Author: gdaught6@leland.Stanford.EDU (George T. Daughters)
- Date: Fri, 17 Jul 1998 08:43:40 +0008
- hi all, bob wrote.... i asked these same questions of an eimac engineer several (ok, many) years ago. as i recall, his reply was that they were the same tube. they could even be from the same product
- /archives//html/Amps/1998-07/msg00100.html (7,906 bytes)
- 77. [AMPS] Re: Pulse rating in vacuum tubes (score: 1)
- Author: gdaught6@leland.Stanford.EDU (George T. Daughters)
- Date: Fri, 17 Jul 1998 08:46:53 +0008
- hi again, dave wrote... so there you have it! whether it's the same or not depends on the tube type! thanks dave! 73, George T. Daughters, K6GT -- FAQ on WWW: http://www.contesting.com/ampfaq.html Su
- /archives//html/Amps/1998-07/msg00101.html (8,203 bytes)
- 78. [AMPS] Re: Calculating input vs output (score: 1)
- Author: gdaught6@leland.Stanford.EDU (George T. Daughters)
- Date: Mon, 20 Jul 1998 15:49:42 +0008
- hi all, i didn't reply to this, because i wasn't sure what al was asking. i figured he'd get lots of responses, and he has... the answers have been of two sorts, because his question can be interpret
- /archives//html/Amps/1998-07/msg00110.html (7,985 bytes)
- 79. [AMPS] RE: Pencils and fiery inch-long arcs! (score: 1)
- Author: gdaught6@leland.Stanford.EDU (George T. Daughters)
- Date: Wed, 22 Jul 1998 10:47:06 +0008
- hi all, dick wrote... (and others have, in a similar fashion)... <snip> i always do this, and use the hand-in-the-pocket method. i have paraphrased what a shop teacher told his classes many years ago
- /archives//html/Amps/1998-07/msg00138.html (8,745 bytes)
- 80. [AMPS] Re: monitoring tube state (score: 1)
- Author: gdaught6@leland.Stanford.EDU (George T. Daughters)
- Date: Mon, 1 Jun 1998 13:32:18 +0008
- well, it's just as easy to do... it just tells you something different. if you see ANY glow of color n the anode of a metal-ceramic tube, you're pushing it WAY too hard! 8>) 73, George T. Daughters,
- /archives//html/Amps/1998-06/msg00012.html (7,141 bytes)
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