Mail Archive Search: <+from:gdaught6@Stanford.edu>

Results:

References: [ +from:gdaught6@Stanford.edu: 176 ]

Total 176 documents matching your query.

101. Re: [Amps] Ion Pumps (score: 1): Author: gdaught6@stanford.edu; Date: Wed, 25 Apr 2007 17:04:15 -0700; < snip > 70 Torr is certainly NOT high vacuum. I'd be very surprised if the pressure inside a good vacuum tube isn't more like 10^-7 Torr or so! But I could be wrong (for a change 8>) 73, George T. D; /archives//html/Amps/2007-04/msg00303.html (7,042 bytes)
102. Re: [Amps] Emtron DX-4 (score: 1): Author: gdaught6@stanford.edu; Date: Sun, 03 Jun 2007 15:14:36 -0700; I'm amazed that they could show it at Dayton. They got into trouble (sort of) when they showed the earlier 1500W version (DX-2, with a 4CX1600B, now a GU-84B due to the hiatus in 4CX1600B availabilit; /archives//html/Amps/2007-06/msg00015.html (7,425 bytes)
103. Re: [Amps] HV transformer buzzing!! Help Please (score: 1): Author: gdaught6@stanford.edu; Date: Sun, 10 Jun 2007 13:23:32 -0700; I haven't seen anybody mention this, so I will. Make sure the bolts holding the shell and laminations are TIGHT! Some old transformers weren't shellaced together, and the laminations can actually vib; /archives//html/Amps/2007-06/msg00054.html (7,921 bytes)
104. Re: [Amps] Looking for details on UTC Special Series transformer(see message) (score: 1): Author: gdaught6@stanford.edu; Date: Wed, 04 Jul 2007 10:12:09 -0700; My UTC catalog (1963-1964 vintage) shows the S-50 as a "plate transformer" with: 115VAC primary 3000-2500-0-2500-3000 secondary giving 2625 or 2175 VDC at 300mA dc. so it appears that what called "se; /archives//html/Amps/2007-07/msg00029.html (7,636 bytes)
105. Re: [Amps] colling air per minute ?? (score: 1): Author: gdaught6@stanford.edu; Date: Tue, 10 Jul 2007 17:42:49 -0700; I suspect that it DOES mean CFM. It was probably written by some clueless marketing type (not ALL marketing types are clueless) who doesn't know the appropriate units. Like you hear "1000 pounds of p; /archives//html/Amps/2007-07/msg00181.html (7,076 bytes)
106. Re: [Amps] SELL: Johnson Bros Verniers (score: 1): Author: gdaught6@stanford.edu; Date: Sun, 15 Jul 2007 08:45:16 -0700; Well, I know that W2CQM has contributed information and has requested information and parts on the reflector. I know because I've sent him various things. So he's not just an advertiser. 73, George T; /archives//html/Amps/2007-07/msg00244.html (7,636 bytes)
107. Re: [Amps] LK-500 ZA heat (score: 1): Author: gdaught6@stanford.edu; Date: Tue, 14 Aug 2007 10:09:22 -0700; Not likely! Heat is the enemy of tube life [so long as the filament/cathode achieve the required temperature, of course]. Rich, AG6K, used to say that the only danger was when there was enough coolin; /archives//html/Amps/2007-08/msg00080.html (7,574 bytes)
108. Re: [Amps] GU74B in GG configuration (score: 1): Author: gdaught6@stanford.edu; Date: Tue, 28 Aug 2007 11:20:42 -0700; Yes, they can be used in GG configuration. But DO NOT tie the grids together and treat the GU74B as a triode! The control grid will draw way too much current, and be destroyed. The correct screen vol; /archives//html/Amps/2007-08/msg00231.html (6,852 bytes)
109. Re: [Amps] Silicon rubber chimneys (score: 1): Author: gdaught6@stanford.edu; Date: Wed, 29 Aug 2007 16:22:56 -0700; I bought the 1/16" stuff from McMaster-Carr. One sheet without adhesive, and one sheet with adhesive. I made the chimney out of the non-adhesive stuff, and made an adhesive strip "bandaid" to apply t; /archives//html/Amps/2007-08/msg00251.html (8,735 bytes)
110. [Amps] 3-500z socket (score: 1): Author: gdaught6@stanford.edu; Date: Sat, 29 Sep 2007 19:19:58 -0700; I have a new ceramic Johnson socket for a 3-500z that I'd like to use to replace a socket with filament pins which are VERY loose. The trouble is, the new socket is VERY tight. Does anyone recommend; /archives//html/Amps/2007-09/msg00499.html (6,566 bytes)
111. Re: [Amps] Caddock power resistors (score: 1): Author: gdaught6@stanford.edu; Date: Tue, 13 Nov 2007 11:14:18 -0800; On 13 Nov 2007 at 19:55, Nils Petter Pedersen wrote about: And so did KM1H, and K9YC, with many snips: I used some Caddock power resistors in the grid circuit of the "Sunnyvale/Saint Petersburg Kilow; /archives//html/Amps/2007-11/msg00192.html (8,809 bytes)
112. Re: [Amps] Caddock power resistors (score: 1): Author: gdaught6@stanford.edu; Date: Tue, 13 Nov 2007 14:15:59 -0800; I don't recall off the top of my head, but you can find them in Mouser's online catalog, and if you Google "Caddock resistors" you'll get lots of info. 73, George T. Daughters, K6GT See you in the Ca; /archives//html/Amps/2007-11/msg00197.html (7,070 bytes)
113. Re: [Amps] 4CX400 TUBE SOURCE & $ (score: 1): Author: gdaught6@stanford.edu; Date: Thu, 06 Dec 2007 14:15:59 -0800; It was written... The 4cx800a is a tetrode, as is the 4cx400. The 8874 is a triode as I recall. 73, George T. Daughters, K6GT See you in the California QSO Party (CQP) October 3-4, 2008 _____________; /archives//html/Amps/2007-12/msg00025.html (7,243 bytes)
114. [Amps] AL811H on 10 m? (score: 1): Author: gdaught6@stanford.edu; Date: Fri, 07 Dec 2007 15:18:23 -0800; Hello all, Can someone in the know tell me what is involved in putting an AL811H on 10 meters? A wire snip and a detent bending/shifting/removal? Thanks in advance es 73, George T. Daughters, K6GT Se; /archives//html/Amps/2007-12/msg00046.html (6,666 bytes)
115. Re: [Amps] Silver (score: 1): Author: gdaught6@stanford.edu; Date: Tue, 12 Feb 2008 11:51:35 -0800; Hello all, If I remember my "Chemistry of the meatllic elements" course correctly, (muriatic acid, hydrochloric acid,) HCl will DISSOLVE silver, leaving an insoluble chloride, AgCl, so maybe it's not; /archives//html/Amps/2008-02/msg00065.html (7,728 bytes)
116. Re: [Amps] Opinion on the AL800? (score: 1): Author: gdaught6@stanford.edu; Date: Thu, 03 Apr 2008 10:47:17 -0700; I believe the 3 minute delay is to allow the indirectly heated cathode to come up to operating temperature. The HV step-start is much faster. And when you're waiting for the amp to "wake up" because; /archives//html/Amps/2008-04/msg00077.html (7,372 bytes)
117. Re: [Amps] Fabrication & part placement (score: 1): Author: gdaught6@stanford.edu; Date: Fri, 18 Apr 2008 08:54:20 -0700; Roger wrote... ... Also, you might look at "New life for Dentron MLA 2500s" in the May, 1996 issue of QST for ideas. The conversion described there is still working fine. George T Daughters, K6GT CU; /archives//html/Amps/2008-04/msg00239.html (8,058 bytes)
118. Re: [Amps] need info re Eimac SK-416 chimney (score: 1): Author: gdaught6@stanford.edu; Date: Mon, 21 Apr 2008 15:27:10 -0700; Fern wrote... The 3-400 for one. Maybe others. George T Daughters Associate Professor (Consulting) Cardiothoracic Surgery Stanford University _______________________________________________ Amps mail; /archives//html/Amps/2008-04/msg00258.html (7,307 bytes)
119. Re: [Amps] Chimney for GS-31B (score: 1): Author: gdaught6@stanford.edu; Date: Thu, 01 May 2008 21:15:44 -0700; Roger, Missouri Guy, and others wrote about: < snip, snip > McMaster Carr has it in various thicknesses. I've bought it both "plain" and with adhesive on one side. Make your chimney out of the plain; /archives//html/Amps/2008-05/msg00007.html (8,019 bytes)
120. Re: [Amps] ALPHA DOA... (score: 1): Author: gdaught6@stanford.edu; Date: Thu, 05 Jun 2008 09:14:36 -0700; Paul wrote... Speaking of which, I have a 3CV1500A7 (and the "radiator/condenser") that is excess to my needs. The tube was producing full output when last used. If anyone is interested, make an offe; /archives//html/Amps/2008-06/msg00029.html (7,875 bytes)

Current List: 101 - 120
Page: [1] [2] [3] [4] [5] [6] [7] [8] [9]