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Total 561 documents matching your query.

341. [AMPS] FS: Power Tubes & Sockets (score: 1)
Author: wc6w@juno.com (Radio WC6W)
Date: Sun, 18 Oct 1998 15:39:27 EDT
These may be of some interest to the group: ** TUBES ** 4-1000A used, very good Eimac $150 -- used ok, Amperex $100 -- 4-400A used good $40 3-400Z used tested good $50 3-400Z weak pair $50 4CX250B us
/archives//html/Amps/1998-10/msg00264.html (8,335 bytes)

342. [AMPS] FS: Vacuum Capacitors (score: 1)
Author: wc6w@juno.com (Radio WC6W)
Date: Sun, 18 Oct 1998 15:39:27 EDT
Jennings Vacuum Variables -- all used (or at least aged) UCSB-100 100pF $125 Integral Front & Back Flanges + Puller -- Missing puller bearing UCSV-110 110pF 15KV $150 Integral Front & Back Flanges +
/archives//html/Amps/1998-10/msg00265.html (8,783 bytes)

343. [AMPS] 4CX600JA pinouts (score: 1)
Author: wc6w@juno.com (Radio WC6W)
Date: Sun, 18 Oct 1998 19:02:23 EDT
7are centre information. Thank you, sir. Hi John, I posted that message. Eimac has the short version of the data sheet on line... and it is in my shortform catalog but, no pinout in either location.
/archives//html/Amps/1998-10/msg00271.html (8,632 bytes)

344. [AMPS] 4CX600JA pinouts (score: 1)
Author: wc6w@juno.com (Radio WC6W)
Date: Sun, 18 Oct 1998 19:03:26 EDT
7are centre information. Thank you, sir. Hi John, I posted that message. Eimac has the short version of the data sheet on line... and it is in my shortform catalog but, no pinout in either location.
/archives//html/Amps/1998-10/msg00272.html (8,621 bytes)

345. [AMPS] FS: RF Ammeters & Panel meters (score: 1)
Author: wc6w@juno.com (Radio WC6W)
Date: Tue, 20 Oct 1998 18:12:52 EDT
RF Ammeters Westinghouse 4", white on black scale, 8 Amp w/ matched external thermocouple -- $25 Westinghouse 4", white on black scale, 15 Amp w/ matched external thermocouple -- $25 Westin 743, 4" w
/archives//html/Amps/1998-10/msg00310.html (7,607 bytes)

346. [AMPS] FS: LC Panel connectors (score: 1)
Author: wc6w@juno.com (Radio WC6W)
Date: Wed, 21 Oct 1998 13:14:28 EDT
Hi all, SInce the interest in these seems to be on the upswing... I have a pair of new LC female panel mount connectors (UG-352U) which could use a new home. I don't know who made them but, they are
/archives//html/Amps/1998-10/msg00343.html (7,220 bytes)

347. [AMPS] FS: 1½ Linear Amplifier (score: 1)
Author: wc6w@juno.com (Radio WC6W)
Date: Wed, 21 Oct 1998 19:43:43 EDT
Hi, A friend of mine recently became a silent key and in his estate are one and a half amplifiers that may be of some interest to someone on this group. ** The ½ Linear ** There is a large lin
/archives//html/Amps/1998-10/msg00347.html (12,101 bytes)

348. [AMPS] RF chokes -- My 2uH worth... (score: 1)
Author: wc6w@juno.com (Radio WC6W)
Date: Thu, 29 Oct 1998 20:59:54 EST
Hi all, I've been following the choke discussion and I would just like to share a technique which I observed in a 2-36 MHz Hughes Aircraft airborne kilowatt amplifier that was designed circa 1958. Th
/archives//html/Amps/1998-10/msg00480.html (9,178 bytes)

349. [AMPS] Re: Autotune amps & the 2uH thingy (score: 1)
Author: wc6w@juno.com (Radio WC6W)
Date: Sat, 31 Oct 1998 14:11:15 EST
a Hi Carl, I found that RG-402 trick just as interesting when I first saw it. I am currently involved in an update of my own ridiculous amplifier and I may just drop one of those coils in for the sak
/archives//html/Amps/1998-10/msg00529.html (11,022 bytes)

350. Re: [Amps] Capacitor Recommendation Needed (score: 1)
Author: Radio WC6W <wc6w@juno.com>
Date: Mon, 6 Oct 2003 13:42:40 -0700
On Sat, 04 Oct 2003 16:27:16 -0700 Dennis Ashworth <K7FL@ARRL.NET> writes: to change vacuum dielectric current less Hi Dennis, 3 suggestions. 1. Find an old mica transmitting cap. The kind with a cer
/archives//html/Amps/2003-10/msg00055.html (8,857 bytes)

351. Re: [Amps] Capacitor Recommendation Needed (score: 1)
Author: Radio WC6W <wc6w@juno.com>
Date: Tue, 7 Oct 2003 09:00:27 -0700
On Mon, 06 Oct 2003 09:33:33 -0700 Vic Rosenthal <vic@rakefet.com> writes: <snip> Hi Vic, Take a look at the ATC 100E series: Up to 7200V @ 100pF 3600V @ 220pF both typically good for in excess of 10
/archives//html/Amps/2003-10/msg00063.html (8,073 bytes)

352. Re: [Amps] searching for original 4cx1000 qst project info (score: 1)
Author: Radio WC6W <wc6w@juno.com>
Date: Tue, 11 Nov 2003 09:36:42 -0800
Hi Skipp, Perhaps it was a combination of memories? The article appeared in CQ Magazine, July 1990, pp. 60-65 but... it referenced several articles in QST describing the "features"... ALC -- QST July
/archives//html/Amps/2003-11/msg00157.html (9,143 bytes)

353. Re: [Amps] AC or DC better for indirectly heated cathodes? (score: 1)
Author: Radio WC6W <wc6w@juno.com>
Date: Wed, 19 Nov 2003 13:21:53 -0800
<snip> Hi Adam, I wouldn't build the supply from scratch but... there are lots of inexpensive surplus regulated switching supplies available that do a fine job in that application. The better units c
/archives//html/Amps/2003-11/msg00283.html (8,711 bytes)

354. Re: [Amps] Benefits of 3-phase power? (score: 1)
Author: Radio WC6W <wc6w@juno.com>
Date: Fri, 21 Nov 2003 19:47:47 -0800
was Probably SCR's now-a-days. See the link below for a typical installation. http://www.hydro.mb.ca/our_facilities/cs_dorsey.shtml 73 & Good morning, Marv WC6W * ____________________________________
/archives//html/Amps/2003-11/msg00317.html (8,635 bytes)

355. Re: [Amps] amp. Pi-L tuning question (score: 1)
Author: Radio WC6W <wc6w@juno.com>
Date: Tue, 25 Nov 2003 10:35:19 -0800
Hi, Well, if you insist on doing it this way... it sounds like you have most of the required stuff. First tune your amp up into a 50 ohm dummy load on 40 meters where you state that you have it worki
/archives//html/Amps/2003-11/msg00368.html (10,262 bytes)

356. [Amps] Life on the Screen? (score: 1)
Author: Radio WC6W <wc6w@juno.com>
Date: Fri, 28 Nov 2003 15:52:39 -0800
The Collins 30S-1 (4CX1000A), and several larger commercial amps (4CX5000, 4cx10000) for which I have schematics, incorporate a loading sensor which has a (capacitive) voltage divider with one end co
/archives//html/Amps/2003-11/msg00391.html (7,159 bytes)

357. Re: [Amps] Life on the Screen? (score: 1)
Author: Radio WC6W <wc6w@juno.com>
Date: Sun, 30 Nov 2003 08:40:33 -0800
of small an screen Depends upon how well bypassed... I have a 4CX1000A/4CX1500B amp which I'm in the process of... updating. It has an SK-800 socket which has an integral 1500 pf screen bypass cap. T
/archives//html/Amps/2003-12/msg00002.html (8,089 bytes)

358. [Amps] FS: L, C & R (score: 1)
Author: Radio WC6W <wc6w@juno.com>
Date: Mon, 1 Dec 2003 07:31:09 -0800
** Roller Coils ** Johnson 229-202 18uH used good, $50 La Pointe L-0201 406-1 (identical to a Johnson 229-201) 10 uH. used good, $30 ** B&W Air Dux coils ** These are NOS, 10" lengths, unless noted o
/archives//html/Amps/2003-12/msg00015.html (12,986 bytes)

359. Re: [Amps] arco variable capacitor data (score: 1)
Author: Radio WC6W <wc6w@juno.com>
Date: Mon, 8 Dec 2003 10:22:15 -0800
On Sun, 7 Dec 2003 21:34:45 -0800 skipp isaham <nospam4me@juno.com> writes: Hi Skipp, I don't believe that they are on-line. 800 441 2726 in the old way. :-) I have a vintage catalog if you need any
/archives//html/Amps/2003-12/msg00137.html (7,700 bytes)

360. Re: [Amps] IMD & ALC's (score: 1)
Author: Radio WC6W <wc6w@juno.com>
Date: Sat, 3 Jan 2004 08:21:43 -0800
Same radio here; same problem. NEVER running into "factory" ALC helps more. :-) find and bad Not necessarily. Just use some form of hard limiting before the "box". I run a RF clipper with 20 dB of he
/archives//html/Amps/2004-01/msg00030.html (8,131 bytes)

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