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Total 1318 documents matching your query.

301. [AMPS] PIN diodes (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Tue, 12 Jan 1999 15:11:16 -0500; I owned a pair of QSK-1500's many years ago. They could not even handle a 2:1 VSWR on 80M at 1200W. Several contesters also bought that model and blew them up repeatedly at under 1500W. I believe the; /archives//html/Amps/1999-01/msg00162.html (8,746 bytes)
302. [AMPS] air varible cap (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Fri, 15 Jan 1999 00:31:08 -0500; Yep 1000pf @ 1500V 73 Carl KM1H cannot find anything on this, on the ___________________________________________________________________ You don't need to buy Internet access to use free Internet e-m; /archives//html/Amps/1999-01/msg00182.html (7,259 bytes)
303. [AMPS] value of plate tune cap in LK-500ZA (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Fri, 15 Jan 1999 11:10:27 -0500; 250pf at 3KV. Identical to SB-220 ( small one) , many Ameritron and Dentrons etc. I have clean used ones for $30 shipped. 73 Carl KM1H I have the physical dimensions but I need to know what the value; /archives//html/Amps/1999-01/msg00187.html (8,384 bytes)
304. [AMPS] New Alpha amps (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Fri, 15 Jan 1999 16:11:02 -0500; Rumor has it that the next run of 87A Alpha amps will use HV switching supplies, plus a new 1.5KW 10M to 2M amp. I understand that their MRI amps have been using switchers for several years. Any comm; /archives//html/Amps/1999-01/msg00188.html (7,044 bytes)
305. [AMPS] Re: Alpha 76CA tube swap (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Fri, 15 Jan 1999 16:13:42 -0500; The conversion is rather straightforeward with little metal work. If you run the 3CX800's at the same 1800W of a full bore CA there will be no tank circuit issues. I would not run over that power by; /archives//html/Amps/1999-01/msg00189.html (10,627 bytes)
306. [AMPS] FS: DTR-2000L Tank Circuit (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Fri, 15 Jan 1999 17:38:57 -0500; I have a complete circuit for sale. The bandswitch, coils and fixed caps are all one assembly; the Tune and Load caps are separate and included. This came from an 8877 amp that ran at a low 2200V at; /archives//html/Amps/1999-01/msg00192.html (7,223 bytes)
307. [AMPS] FS: Tune and Load Variable Caps (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Fri, 15 Jan 1999 18:31:30 -0500; The collection is building again from SB-220 6M conversions. All are clean with no arc pits. 1. 250pf @ 3KV. Also identical to many Ameritron, Alpha, Amp Supply, Dentron and others. Some early ones w; /archives//html/Amps/1999-01/msg00193.html (7,410 bytes)
308. [AMPS] HV Connectors (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Sat, 16 Jan 1999 12:26:59 -0500; RG-213/214 with Teflon male and female connectors will handle that voltage safely ( Hi-pot tested to 5KV which is the cable limit) Carl. The HN series can be also be used. Alden Products in Brocton,; /archives//html/Amps/1999-01/msg00206.html (9,266 bytes)
309. [AMPS] Re: Alpha 76CA tube swap (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Sat, 16 Jan 1999 10:44:14 -0500; On Fri, 15 Jan 1999 22:00:04 -0500 "pmarkham" <pmarkham@newsguy.com> writes: If there is a url for details on the www? Just what the world needs is another web page! Everytime u key the amp the filam; /archives//html/Amps/1999-01/msg00207.html (9,297 bytes)
310. [AMPS] 8122 tubes for sale (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Sat, 16 Jan 1999 12:31:15 -0500; What are the date codes? I have 3 NCL's here and could use a spare set but the RCA has a history of problems with long term storage. 73 Carl KM1H National Radio 1963-69 Part of NCL-2000 design team O; /archives//html/Amps/1999-01/msg00208.html (8,101 bytes)
311. [AMPS] Guesstimating RF Component Specs (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Sat, 16 Jan 1999 13:11:37 -0500; Start by reading thru old ARRLHandbooks, QST's etc; that will give you a pretty good idea of what is used where, how and why. Look at various commercial ham amps and notice the case size of the silve; /archives//html/Amps/1999-01/msg00209.html (10,445 bytes)
312. [AMPS] Tube identification (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Sat, 16 Jan 1999 17:25:31 -0500; After multiple layers of BS the bottom line is that it is most likely a standard production tube . Look at it ...if it looks like a 5894, 4CX250 series, etc it probably is. The real question is the f; /archives//html/Amps/1999-01/msg00213.html (9,601 bytes)
313. [AMPS] AL-82 (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Sat, 16 Jan 1999 20:05:41 -0500; On Sat, 16 Jan 1999 18:26:18 -0800 "Mike Michon" <michon@eatel.net> writes: For starters: Replace the diode on the PS board that is not designated on the schematic. It is a 1N4001 between the B- rail; /archives//html/Amps/1999-01/msg00216.html (9,753 bytes)
314. [AMPS] AL-82 (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Sun, 17 Jan 1999 11:51:40 -0500; On Sat, 16 Jan 1999 22:44:19 -0800 "Mike Michon" <michon@eatel.net> writes: You now have no bias so the tubes will run very red. You are running idle current right at the maximum dissipation ratings; /archives//html/Amps/1999-01/msg00227.html (14,130 bytes)
315. [AMPS] AL-82 (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Sun, 17 Jan 1999 13:13:41 -0500; On Sun, 17 Jan 1999 10:35:57 -0800 "Mike Michon" <michon@eatel.net> writes: Now that is an interesting method! I have a few duds here that I will try that on. The tubes put out 1200 watts again. For; /archives//html/Amps/1999-01/msg00229.html (17,517 bytes)
316. [AMPS] MHV & SHV Connector supplies. (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Sun, 17 Jan 1999 17:55:36 -0500; On Sun, 17 Jan 1999 14:49:28 EST nospam4me@juno.com (Skip S Isaham) writes: Me too Skip, got them both. but a phone call can request the un-wieldy over weight phone Overpriced. You can buy nice 20-30; /archives//html/Amps/1999-01/msg00237.html (11,239 bytes)
317. [AMPS] HV Connectors (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Sun, 17 Jan 1999 18:21:56 -0500; The ARRL Handbook and various QST, HRM articles lists them at 2000-2500V safe maximum which closely coincides to the ratings of standard cable. You are way off Ian. RG-58C/U is rated at 1900V and RG-; /archives//html/Amps/1999-01/msg00238.html (10,193 bytes)
318. [AMPS] Rohn Tower discounter in NE (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Sun, 17 Jan 1999 18:35:05 -0500; Dispatch Communications in Hudson, NH is now a stocking Rohn dealer. They will meet or beat Texas Towers price. Free delivery on tower orders to 20 miles, realworld charges after that in their own tr; /archives//html/Amps/1999-01/msg00239.html (7,258 bytes)
319. [AMPS] FL2100B No Output (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Mon, 18 Jan 1999 08:52:09 -0500; Sounds like an open in the path between the tank coil and the load cap. Recheck your wiring and also look for what blew the switch in the first place. 73 Carl KM1H ___________________________________; /archives//html/Amps/1999-01/msg00246.html (8,253 bytes)
320. [AMPS] HV Connectors (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Mon, 18 Jan 1999 10:37:45 -0500; The MIL ratings are RMS Ian but there is no mention in the document of the frequency. I and possibly others have always believed it to be 60Hz AC. I also can not understand the wide difference in DC; /archives//html/Amps/1999-01/msg00247.html (10,006 bytes)

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