Mail Archive Search: <+from:wc6w

Results:

References: [ +from:wc6w_amps@yahoo.com: 193 ]

Total 193 documents matching your query.

21. Re: [Amps] Bird 43 PEP adapter update (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Mon, 19 Nov 2007 12:42:44 -0800 (PST); Ooooops, the interest far exeeded my expectations so rather than doing a bunch of emailing, I posted it on my webpage. It may be seen at the very bottom of: http://wc6w.50webs.com/wc6waccy/index.html; /archives//html/Amps/2007-11/msg00277.html (9,154 bytes)
22. Re: [Amps] 4CX250B in grounded grid and screen configuration (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Tue, 20 Nov 2007 11:03:01 -0800 (PST); Hi Angel, That connection is not valid for the 4CX250 family. The control grid will hog the current and self destruct. To run these types cathode driven, the standard bias voltages must be applied to; /archives//html/Amps/2007-11/msg00286.html (9,716 bytes)
23. Re: [Amps] Amplifier with Remote Capability (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Thu, 22 Nov 2007 16:41:03 -0800 (PST); Hi Bob, If you are going to have microprocessor controlled servos driving all the L's & C's then you are most of the way there. You can easily add auto tuning & loading. I have designs for ampfiliers; /archives//html/Amps/2007-11/msg00343.html (9,391 bytes)
24. [Amps] A funny thing happened at the turn of the switch... (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Fri, 30 Nov 2007 12:17:26 -0800 (PST); I recently reconfigured a 3KW load bank, which I use for amplifier power supply testing, by adding a 4 position progressively shorting switch to select 1 thru 4, 12K paths resulting in a selectable 1; /archives//html/Amps/2007-11/msg00406.html (7,920 bytes)
25. Re: [Amps] Very Off topic : AM without sidebands ?? :-) ++ (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Fri, 30 Nov 2007 12:25:38 -0800 (PST); Hi Nils, I'm not familiar with the hardware on your side of the pond but, over here the prefernce is to employ plastic for the pipes & gutters which might explain the recent decline in incidental rec; /archives//html/Amps/2007-11/msg00407.html (11,067 bytes)
26. Re: [Amps] A funny thing happened at the turn of the switch... (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Sat, 1 Dec 2007 09:32:04 -0800 (PST); Sooooo, I tried option #3, the snubber approach, and it kinda worked. I used some of the (1 uF) capacitors & diodes from my aborted Microwave oven power supply project and a bunch of 160K 2 watts R's; /archives//html/Amps/2007-12/msg00000.html (9,046 bytes)
27. Re: [Amps] Johnson Roller Inductor (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Tue, 1 Jan 2008 10:32:57 -0800 (PST); Hi Bob, 22.5 uH The 221-2 has the same inductance as the 221-1 but, the turns are wound in the opposite direction. This is also true for the -4 & -6 parts which are the same values as the -3 & -5 res; /archives//html/Amps/2008-01/msg00010.html (7,243 bytes)
28. Re: [Amps] questions about hi pot tester (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Mon, 7 Jan 2008 08:59:51 -0800 (PST); Hi John, A point of reference for you: http://wc6w.50webs.com/wc6wtest/index.html?fr50.html 73 & Good morning, Marv WC6W http://wc6w.50webs.com/ ______________________________________________________; /archives//html/Amps/2008-01/msg00075.html (9,379 bytes)
29. Re: [Amps] 160-6m amp designs? (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Wed, 9 Jan 2008 12:09:15 -0800 (PST); Hi Steve, Welcome to the group! The 8877 is a fine choice. Be sure to include a grid overcurrent trip for reliability. Covering 160-6 in a single amp invites some challenging problems with regard to; /archives//html/Amps/2008-01/msg00088.html (10,953 bytes)
30. [Amps] A One Tube Radio (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Mon, 21 Jan 2008 08:16:30 -0800 (PST); http://www.berkeley.edu/news/media/releases/2007/10/31_NanoRadio.shtml 73 & Good morning, Marv WC6W http://wc6w.50webs.com/ * _________________________________________________________________________; /archives//html/Amps/2008-01/msg00128.html (6,688 bytes)
31. Re: [Amps] Model 86 Bandswitches (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Thu, 31 Jan 2008 19:16:23 -0800 (PST); Hi Dennis, Some of those switches employ roll pins and some use drift pins. Both can easily be driven out with a small pin punch. If you don't have a punch of the correct diameter you can grind down; /archives//html/Amps/2008-01/msg00284.html (8,101 bytes)
32. Re: [Amps] Step start (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Sun, 3 Feb 2008 16:17:14 -0800 (PST); Hi Patrick, I've done it, by means of your proposed method, on supplies ranging from 12 to 3000 volts. I've mostly employed a TL431 for the sensor/relay driver. 73 & Good afternoon, Marv WC6W http://; /archives//html/Amps/2008-02/msg00018.html (9,183 bytes)
33. [Amps] Here's an interesting part... (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Fri, 8 Feb 2008 08:58:05 -0800 (PST); ... that could switch plate voltage off fast enough to act as a "crowbar" for a low voltage (3KV) amp. http://ixdev.ixys.com/DataSheet/99385.pdf 73 & Good morning, Marv WC6W http://wc6w.50webs.com/ *; /archives//html/Amps/2008-02/msg00047.html (7,171 bytes)
34. Re: [Amps] ferrite in RF chokes for PAs (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Thu, 6 Mar 2008 10:25:34 -0800 (PST); Hi Angel, Some info you may find of interest on this subject may be seen on my webpage: http://wc6w.50webs.com/wc6wamps/index.html?fr62.html 73 & Good morning, Marv WC6W == message truncated == _____; /archives//html/Amps/2008-03/msg00053.html (16,913 bytes)
35. Re: [Amps] XCVR Output vs. Amplifier Input Impedence (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Sun, 9 Mar 2008 14:51:29 -0700 (PDT); Hi Wayne, That tube runs at just over 100 ohms for all reasonable operating conditions. Click on the 4-1000A link at the top of this page: http://wc6w.50webs.com/wc6wamps/index.html?fr53.html 73 & Ha; /archives//html/Amps/2008-03/msg00103.html (9,423 bytes)
36. Re: [Amps] thyristor controlled soft start? (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Fri, 21 Mar 2008 10:29:56 -0700 (PDT); Hi Andy, Are you thinking about just replacing the relay across the resistor with a Triac? Or something more involved like a phase controlled ramp?? A Triac will exhibit a considerable loss during no; /archives//html/Amps/2008-03/msg00191.html (8,788 bytes)
37. Re: [Amps] Eimac Socket SK-800A (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Thu, 12 Jun 2008 20:40:32 -0700 (PDT); Hi Bob, Two possiblities from the time closet... Are the contacts made with 4 little contacts on each sector? The "B's" are flat & solid. Is the screen capacitor sealed with colored goop? The "B's" a; /archives//html/Amps/2008-06/msg00106.html (8,794 bytes)
38. [Amps] Three questions about the 8877 in G-G (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Wed, 25 Jun 2008 08:35:32 -0700 (PDT); Three questions about the 8877 in G-G Recently, I've been contemplating building a low band, 160-10 meters, grounded grid 8877 amp as I've got a socket, a bandswitch and a suitable cabinet -- That's; /archives//html/Amps/2008-06/msg00222.html (8,447 bytes)
39. Re: [Amps] Screen Power Supply. (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Mon, 30 Jun 2008 09:50:10 -0700 (PDT); Hi Bob, The ol' MPS-U10 was originally a Motorola part, obsoleted almost 20 years ago. Suitable available substitutes would include: The MJE340, 2N5656, and 2N5657 Made by On Semiconductor the succes; /archives//html/Amps/2008-06/msg00239.html (9,701 bytes)
40. Re: [Amps] 4-1000A GG Grid Bias (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Sun, 6 Jul 2008 14:04:57 -0700 (PDT); Hi Mike, If you click on the link at the top of this page, you'll see Eimac's numbers up to 5 KV on the plate. http://wc6w.50webs.com/wc6wamps/index.html?fr53.html Above that point, rather than inser; /archives//html/Amps/2008-07/msg00052.html (8,262 bytes)

Current List: 21 - 40
Page: [1] [2] [3] [4] [5] [6] [7] [8] [9] [10]