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261. [AMPS] Northrup and the 3/2 law (score: 1): Author: wc6w@juno.com (Radio WC6W); Date: Tue, 28 Mar 2000 22:05:06 EST; On Tue, 28 Mar 2000 15:06:17 -0800 "Colin Lamb" <k7fm@teleport.com> writes: What an apropos choice of airframes! Strangely reminiscent of a discussion, I observed recently, comparing an 8171, operate; /archives//html/Amps/2000-03/msg01029.html (10,156 bytes)
262. [AMPS] 32 uF 4.5KV capacitors (score: 1): Author: wc6w@juno.com (Radio WC6W); Date: Thu, 30 Mar 2000 13:16:39 EST; This might be of interest to the group... There are some new GE 32 uF 4.5 KV (GE# 28F2023G11) capacitors for sale at $39.95 ea. available from Herbach & Rademan (800) 848 8001 A friend pointed this o; /archives//html/Amps/2000-03/msg01088.html (7,110 bytes)
263. [AMPS] FS: Power Tubes & others (score: 1): Author: wc6w@juno.com (Radio WC6W); Date: Fri, 31 Mar 2000 13:07:59 EST; ** POWER TUBES ** 450TH Eimac -- These are pulls and spares from a working estate amp. $100 ea 7580W/4CX250R (Eimac / Amperex) pulls $25 ea --or-- 5 for $100 7204/4CX250F used tested good $20 ea 8621; /archives//html/Amps/2000-03/msg01100.html (8,658 bytes)
264. [AMPS] My Mailbox is raining diode talk (score: 1): Author: wc6w@juno.com (Radio WC6W); Date: Thu, 03 Feb 2000 13:34:09 EST; Good morning to diode lover's the world over, I'd just like to toss a couple of facts into the milieu... 1. Maximum Non-Repetitive Surge Current has a number of values depending on the time of the ap; /archives//html/Amps/2000-02/msg00051.html (8,657 bytes)
265. [AMPS] FS: 10KW+ Plate Transformer (score: 1): Author: wc6w@juno.com (Radio WC6W); Date: Fri, 14 Jan 2000 20:27:17 EST; This transformer is a fairly modern (mid '70's vintage?) monster. I believe it was made for a shaker table amplifier driven by a pair of 4CX5000's. The U-I laminations (which are most of the thing) m; /archives//html/Amps/2000-01/msg00301.html (7,403 bytes)
266. [AMPS] Smallest practical 1.5KW 20uH coil (score: 1): Author: wc6w@juno.com (Radio WC6W); Date: Tue, 25 Jan 2000 01:10:48 EST; Hello to the group, I'm contemplating some alternative designs for a 20uH,160M "padder", coil, to be switched in following the Pi-net roller coil in my 4-400A amp under construction. The "typical" 3"; /archives//html/Amps/2000-01/msg00515.html (8,953 bytes)
267. [AMPS] Smallest practical 1.5KW 20uH coil (score: 1): Author: wc6w@juno.com (Radio WC6W); Date: Tue, 25 Jan 2000 19:08:36 EST; Hi Dick, Thanks for the tape recommendation. almost 1.5 toroid I used the (ancient) formula from the Micrometals catalog: B = E*10^8 / (4.44 * A * N * f) Where B is the max. flux density in Gauss, E; /archives//html/Amps/2000-01/msg00526.html (9,488 bytes)
268. [AMPS] Smallest practical 1.5KW 20uH coil (score: 1): Author: wc6w@juno.com (Radio WC6W); Date: Wed, 26 Jan 2000 23:27:39 EST; beenthinking space producers Hi Harald, I met Bob (W6YUY) when we both worked at the same company in the early '80's. Bob passed away about 8 years ago and I "inherited" one of his coils constructed; /archives//html/Amps/2000-01/msg00537.html (11,599 bytes)
269. [AMPS] Diode stacks (score: 1): Author: wc6w@juno.com (Radio WC6W); Date: Sun, 30 Jan 2000 12:11:07 EST; @1.5A, K tell Hi Mike, Those sound like RF Parts... parts. Take a look at: http://www.cts.com/sd/marnold/hvrect.html 73, Marv WC6W * ________________________________________________________________; /archives//html/Amps/2000-01/msg00578.html (7,319 bytes)
270. [AMPS] FS: Hammarlund NZ-10 Neutralizing capacitors (score: 1): Author: wc6w@juno.com (Radio WC6W); Date: Mon, 31 Jan 2000 13:37:10 EST; FS: Hammarlund NZ-10 Neutralizing capacitors, new $25 pair plus shipping if necessary, naturally! :-) Contact Marv, WC6W, 310 649 3111 (reasonable hours Pacific Time please) or via: WC6W@Juno.com * _; /archives//html/Amps/2000-01/msg00585.html (7,098 bytes)
271. [AMPS] FS: Johnson & Eimac sockets (score: 1): Author: wc6w@juno.com (Radio WC6W); Date: Mon, 31 Jan 2000 13:37:10 EST; ** SOCKETS ** Eimac SK 510 sockets(for 4-1000A) "New" shiny (the filament pins were once connected) $40 Used SK 510 socket $20 Overused SK 510 socket $10 "Ring" style 4 pin sockets with a small metal; /archives//html/Amps/2000-01/msg00586.html (7,836 bytes)
272. [AMPS] Variac I.D. (score: 1): Author: wc6w@juno.com (Radio WC6W); Date: Sun, 14 Nov 1999 22:46:23 EST; Hi Mike, You may have an odd unit there... My dim memory of how the Superior numbers run would suggest that it is a 440 volt (from the lead 4) three phase unit for open delta connection (the -2 denot; /archives//html/Amps/1999-11/msg00323.html (7,780 bytes)
273. [AMPS] The Worldwide, No Holds Barred, SWR Quiz. (score: 1): Author: wc6w@juno.com (Radio WC6W); Date: Sat, 02 Oct 1999 14:54:29 EDT; If I was in a picky mood, I'd inquire as to the characteristic impedance of the generator. :-) 73, Marv WC6W * ___________________________________________________________________ Get the Internet jus; /archives//html/Amps/1999-10/msg00051.html (9,216 bytes)
274. [AMPS] Mica caps/RF current (score: 1): Author: wc6w@juno.com (Radio WC6W); Date: Mon, 25 Oct 1999 12:32:45 EDT; On Sun, 24 Oct 1999 22:11:24 -0400 "Phil T. (VA3UX)" <phil@vaxxine.com> writes: the surprisingly different amps amps in continuous Vic, Phil & Phil I too have the CDE catalog but, I also have an ARCO; /archives//html/Amps/1999-10/msg00624.html (10,312 bytes)
275. [AMPS] Eimac 4-400 (score: 1): Author: wc6w@juno.com (Radio WC6W); Date: Wed, 27 Oct 1999 10:39:01 EDT; On Wed, 27 Oct 1999 04:46:01 +0200 "Werner S. Zielke" <wsz@ginko.de> writes: Hi Werner, The 4-400C is the extended life version of the 4-400A. Otherwise, the specifications are identical. 73, Marv WC; /archives//html/Amps/1999-10/msg00662.html (7,301 bytes)
276. [AMPS] Silver Plating question (score: 1): Author: wc6w@juno.com (Radio WC6W); Date: Tue, 21 Sep 1999 21:34:28 EDT; Hi Martin, In all the discussion that evolved from your query, I didn't notice happen to notice the answer... unless my delete finger outran my eyesight. :-) Yes, silver has the lowest electrical re; /archives//html/Amps/1999-09/msg00209.html (9,664 bytes)
277. [AMPS] handles for cheap... (score: 1): Author: wc6w@juno.com (Radio WC6W); Date: Tue, 21 Sep 1999 21:34:28 EDT; Here is a "handles" price point... I have for sale a large 8171/4CX10000D linear that was under construction by an SK friend. It.is just sort of started. Socket mounted, air system complete, nothing; /archives//html/Amps/1999-09/msg00210.html (10,081 bytes)
278. [AMPS] Voltage ratings of air variable caps? (score: 1): Author: wc6w@juno.com (Radio WC6W); Date: Mon, 02 Aug 1999 23:15:39 EDT; ratings Hi Mark, 3000 V and 5200 V for those two spacings, respectively, from an older edition of the Radio Handbook. 73, Marv WC6W * _________________________________________________________________; /archives//html/Amps/1999-08/msg00055.html (7,830 bytes)
279. [AMPS] Pi-Net math (score: 1): Author: wc6w@juno.com (Radio WC6W); Date: Wed, 04 Aug 1999 10:31:20 EDT; Hi Rich, You didn't detail the formulas you used for L & C2 but, from your C1 calculation, I note that you are using the classic "time-dishonored" approximation which is close enough for amateur work; /archives//html/Amps/1999-08/msg00087.html (9,694 bytes)
280. [AMPS] Pi-Net math (score: 1): Author: wc6w@juno.com (Radio WC6W); Date: Wed, 04 Aug 1999 13:54:59 EDT; approximation. Eimac neglected to alert the reader to the fact that they used an approximation. For in depth discussions on the subject see: Ham Radio September 1977 pp. 30-39 plus a correction in t; /archives//html/Amps/1999-08/msg00090.html (9,027 bytes)

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