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

Total 193 documents matching your query.

141. Re: [Amps] Shielding Effectiveness (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Thu, 7 Oct 2010 09:33:22 -0700 (PDT); Honeycomb shielding is way better than any screen or holes approach. An example -- http://www.tech-etch.com/shield/8000series.html These can sometimes be found in useful sizes from computer surplus.; /archives//html/Amps/2010-10/msg00094.html (7,841 bytes)
142. Re: [Amps] Switching Supplies for High Current Filaments (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Thu, 7 Oct 2010 10:33:51 -0700 (PDT); Hi Paul, Acceptable on an indirectly heated tube. This will cause trouble on a filamentary type as even though the filament is structured to minimize the effect some modulation will occur. This is no; /archives//html/Amps/2010-10/msg00097.html (9,817 bytes)
143. Re: [Amps] The old PEP question. (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Fri, 8 Oct 2010 08:32:21 -0700 (PDT); Hi Alek, Here's a better, simpler solution... http://qsl.net/wc6w/wc6waccy/index.html?fr40.html Note: If you are using Explorer 8 or 9, "Compatabilty Mode" must be selected on the "Tools" menu to pro; /archives//html/Amps/2010-10/msg00124.html (8,227 bytes)
144. Re: [Amps] Building a Mock Up (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Thu, 18 Nov 2010 08:30:12 -0800 (PST); Hi Lee et al, I used to use cardboard for mockups but, for the past couple years I've been using the corrugated plastic that's employed in temporary roadside advertising. It's stronger than cardboard; /archives//html/Amps/2010-11/msg00330.html (10,848 bytes)
145. Re: [Amps] Help identifying tubes (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Wed, 1 Dec 2010 08:24:16 -0800 (PST); 4-500A's will have pins 2 & 4 commoned for the screen. Note: The suppressor grid is connected to the base shell. 73 & Good morning Marv WC6W http://qsl.net/wc6w/ _____________________________________; /archives//html/Amps/2010-12/msg00000.html (10,465 bytes)
146. Re: [Amps] Help identifying tubes (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Thu, 2 Dec 2010 15:18:44 -0800 (PST); Hi Jim, Ooops, my typo. Why do they put the 4 & 5 keys so close together? (rhetorical) There are 4-500A's too but, they're tetrodes. 73 & Good afternoon, Marv WC6W http://qsl.net/wc6w/ ______________; /archives//html/Amps/2010-12/msg00012.html (16,045 bytes)
147. Re: [Amps] Help identifying tubes (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Thu, 2 Dec 2010 15:18:50 -0800 (PST); Hi Jim, Ooops, my typo. Why do they put the 4 & 5 keys so close together? (rhetorical) There are 4-500A's too but, they're tetrodes. 73 & Good afternoon, Marv WC6W http://qsl.net/wc6w/ ______________; /archives//html/Amps/2010-12/msg00013.html (15,864 bytes)
148. Re: [Amps] Sanity check (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Sun, 5 Dec 2010 11:42:56 -0800 (PST); Hi Gerald, Yes, you can go all the way. .141 coax may be employed for lower voltage amps. Just add some 1/4" copper tubing over it for the highest bands. See: http://qsl.net/wc6w/wc6wamps/index.html?; /archives//html/Amps/2010-12/msg00030.html (8,252 bytes)
149. [Amps] A Filament Query (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Thu, 13 Jan 2011 11:22:16 -0800 (PST); This concerns somewhat smaller tubes than are typically discussed on this reflector but, where else can I hope to find someone old, errr... experienced enough, to know the answer. Given an old miniat; /archives//html/Amps/2011-01/msg00138.html (7,131 bytes)
150. Re: [Amps] A Filament Query (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Fri, 14 Jan 2011 09:04:32 -0800 (PST); A few clarifications on the received replies: I presume that it is an oxide coated filament as it operates at barely visible deep red. I'm not sure if incandescent lamps will correlate as they are ru; /archives//html/Amps/2011-01/msg00140.html (9,940 bytes)
151. Re: [Amps] Transformer-LESS advice (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Thu, 20 Jan 2011 08:44:14 -0800 (PST); Hi John, I had the opportunity to examine one of those last year courtesy of the "curb exchange". Many are the reasons it would not be suitable as an amplifer supply: There is no input filtering, so; /archives//html/Amps/2011-01/msg00201.html (10,866 bytes)
152. Re: [Amps] Suitable switching transistors found (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Fri, 21 Jan 2011 09:15:54 -0800 (PST); Hi Lon, Every consider using MOSFET's for this application? These are available in 1000 & 1200 volt versions from IR, IXYS, & ST, in TO-220 packages. The pinout would even be compatibile with the old; /archives//html/Amps/2011-01/msg00215.html (10,010 bytes)
153. Re: [Amps] looking for idea on switching arrangment (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Mon, 31 Jan 2011 10:14:59 -0800 (PST); Hi Ulf, When I need to implement that feature I just use a longer shaft on the existing switch and add a wafer. Do you know what series your switch is from? I have extra Centralab (1/4" double flat); /archives//html/Amps/2011-01/msg00465.html (9,518 bytes)
154. [Amps] FS: Amplifier Parts (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Wed, 2 Feb 2011 10:16:42 -0800 (PST); Alert!! Microsoft IE8 or IE9 may not properly display my webpage. Surely Billy G. is hard at work on a fix. Until then, if you are running one of the above browsers, it may help if you click on the "; /archives//html/Amps/2011-02/msg00012.html (12,976 bytes)
155. Re: [Amps] MACHLETT tubes? (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Thu, 10 Feb 2011 09:31:56 -0800 (PST); Hi Alex, Machlett was an old American manufacturer of some tubes, X-Ray equipment and other RF thingys. I believe that they were acquired long ago by some other company. I've don't recall seeing a RF; /archives//html/Amps/2011-02/msg00082.html (8,892 bytes)
156. [Amps] FS: Amplifier Parts (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Fri, 1 Apr 2011 08:40:04 -0700 (PDT); Alert!! Microsoft IE8 or IE9 may not properly display my webpage. Surely Billy G. is hard at work on a fix. Until then, if you are running one of the above browsers, it may help if you click on the "; /archives//html/Amps/2011-04/msg00002.html (12,751 bytes)
157. Re: [Amps] 4-400A ratings (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Mon, 9 May 2011 10:13:33 -0700 (PDT); Hi Vic, A 4-400A is just a 4-250A with a larger plate structure. It is an emission limit. 73 & Good morning, Marv WC6W http://qsl.net/wc6w/ ** -- On Sun, 5/8/11, Vic K2VCO <vic@rakefet.com> wrote: __; /archives//html/Amps/2011-05/msg00020.html (8,945 bytes)
158. [Amps] RF Choke Query (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Sun, 29 May 2011 12:38:08 -0700 (PDT); Does anyone happen to know the manufacturer of a RF Choke of this description: 2.5" x .563" (9/16") diameter ceramic form Wound with green wire in 6 pies, spaced at 1/4" intervals 2.5 mHy The contact; /archives//html/Amps/2011-05/msg00275.html (6,567 bytes)
159. Re: [Amps] Shipping to Japan (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Tue, 21 Jun 2011 08:39:33 -0700 (PDT); Hi Mark, If your not in a hurry, contact a freight forwarder. They'll put it on a pallet and ship it for a tiny fraction of what it would cost by air. 73 & Good morning, Marv WC6W http://qsl.net/wc6w; /archives//html/Amps/2011-06/msg00286.html (8,833 bytes)
160. [Amps] FS: Parts for Amplifiers (score: 1): Author: Radio WC6W <wc6w_amps@yahoo.com>; Date: Sun, 26 Jun 2011 12:35:59 -0700 (PDT); ** Capacitors ** Cardwell -- XR-1000HS (about 950pF max measured) These have slightly contoured plates for improved tuning resolution at minimum C. .030 air gap. About 4.5" x 4" x 3.5" overall includ; /archives//html/Amps/2011-06/msg00298.html (11,941 bytes)

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