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Total 36 documents matching your query.

21. [Amps] al80a (score: 1): Author: Ian White, G3SEK" <g3sek@ifwtech.co.uk (Ian White, G3SEK); Date: Sat, 3 Aug 2002 08:53:27 +0100; While rooting around inside the SB-1000, I checked the carbon resistor in the paralytic choke... good as new. The RF choke and bypass caps were there as standard. Since the screwy meter readings were; /archives//html/Amps/2002-08/msg00038.html (10,411 bytes)
22. [Amps] al80a (score: 1): Author: 2@vc.net (2); Date: Sat, 3 Aug 2002 04:54:05 -0700; ** What was the measured resistance? // I have found that intermittent vhf parasites are so brief they can damage the element of a carbon-comp resistor without exhibiting damage to the moulded case.; /archives//html/Amps/2002-08/msg00039.html (8,958 bytes)
23. [Amps] al80a (score: 1): Author: 2@vc.net (2); Date: Sat, 3 Aug 2002 04:54:08 -0700; ** The factory never errs ? ** Why ? ** 1N5400-series rectifiers begin conducting c. 0.5V @25ºC. ** Putting glitch diodes in parallel with the meter movement protects the meter. If the meter is; /archives//html/Amps/2002-08/msg00040.html (9,242 bytes)
24. [Amps] al80a (score: 1): Author: Ian White, G3SEK" <g3sek@ifwtech.co.uk (Ian White, G3SEK); Date: Sat, 3 Aug 2002 15:31:25 +0100; I'm aware of that, so I unsoldered the resistor and measured the value... good as new. There are thousands of amps, of many different kinds, that seem to work fine with 0.001uF. That evidence has a l; /archives//html/Amps/2002-08/msg00041.html (8,277 bytes)
25. [Amps] al80a (score: 1): Author: 2@vc.net (2); Date: Sat, 3 Aug 2002 12:13:38 -0700; ** I am influnced by the (X x I) V-drop from c.1A passing through an 88-ohm reactance. - R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, www.vcnet.com/measures. end; /archives//html/Amps/2002-08/msg00048.html (8,390 bytes)
26. [Amps] al80a (score: 1): Author: Ian White, G3SEK" <g3sek@ifwtech.co.uk (Ian White, G3SEK); Date: Sun, 4 Aug 2002 11:57:52 +0100; The complete article is now downloadable (467KB): http://www.ifwtech.co.uk/g3sek/in-prac/inpr0402.pdf -- 73 from Ian G3SEK 'In Practice' columnist for RadCom (RSGB) Editor, 'The VHF/UHF DX Book' http; /archives//html/Amps/2002-08/msg00052.html (8,408 bytes)
27. [Amps] al80a (score: 1): Author: carlseye@tampabay.rr.com (carl seyersdahl); Date: Wed, 31 Jul 2002 19:19:12 -0400; One more comment here, Please?? I turned the amp on and noted that the plate(anode to the new generation) turned a little red, indicating that the plate (anode) is drawing current !! ( maybe too much; /archives//html/Amps/2002-07/msg00001.html (6,368 bytes)
28. [Amps] al80a (score: 1): Author: 2@vc.net (2); Date: Wed, 31 Jul 2002 19:08:43 -0700; Zero grid-fil resistrance incicates a bent filanment helix touching the grid. (Photo in September, 1990 *QST*, and on my Web site) Either the amplifier has been operated aeronautical mobile in an ac; /archives//html/Amps/2002-07/msg00004.html (7,464 bytes)
29. [Amps] al80a (score: 1): Author: carlseye@tampabay.rr.com (carl seyersdahl); Date: Wed, 31 Jul 2002 18:46:57 -0400; I have an AL80A here which came to me from a handicap ham, no name, before I dig into it, I see normal HV, (3500) no plate current on meter , grid mtr. shows neg.(?) current .. !! (off scale to left); /archives//html/Amps/2002-07/msg00547.html (6,608 bytes)
30. [AMPS] al80a (score: 1): Author: ernie@netvision.net.il (Tsachy Lindenbaum); Date: Mon, 15 May 2000 20:10:34 +0300; This is a multi-part message in MIME format. --=_NextPart_000_0072_01BFBEA9.A0DDBCA0 Content-Type: text/plain; charset="iso-8859-8-i" Content-Transfer-Encoding: quoted-printable Hello Can anyone advi; /archives//html/Amps/2000-05/msg00155.html (8,463 bytes)
31. [AMPS] al80a (score: 1): Author: ernie@netvision.net.il (Tsachy Lindenbaum); Date: Mon, 13 Mar 2000 19:44:27 +0200; This is a multi-part message in MIME format. --=_NextPart_000_00FB_01BF8D24.8B0D31A0 Content-Type: text/plain; charset="iso-8859-8-i" Content-Transfer-Encoding: quoted-printable Hello Can anyone advi; /archives//html/Amps/2000-03/msg00636.html (8,404 bytes)
32. [Amps] AL80A (score: 1): Author: "Georgens, Tom" <Tom.Georgens@netapp.com>; Date: Thu, 30 Mar 2006 07:15:49 -0800; Hello - My AL80A in Barbados failed after years of reliable service. It looks like all of the diodes on the rectifier board are shorted. I also noticed that one of the diodes had a chunk blown out of; /archives//html/Amps/2006-03/msg00778.html (6,679 bytes)
33. Re: [Amps] AL80A (score: 1): Author: R@contesting.com;Measures <r@somis.org>; Date: Thu, 30 Mar 2006 08:25:10 -0800; Yes, which is the usual case because series rectifiers are like dominoes. This is a possibility -- especially with an AL-80 because it uses no glitch R in the +HV to limit fault-I during an anomaly -; /archives//html/Amps/2006-03/msg00779.html (7,846 bytes)
34. Re: [Amps] AL80A (score: 1): Author: "Georgens, Tom" <Tom.Georgens@netapp.com>; Date: Thu, 30 Mar 2006 12:37:55 -0800; Thanks to all for the responses. In response to the questions, The amp does have a retrofit step start installed by a previous owner. A guest had reported that the amp did not turn on at all and had; /archives//html/Amps/2006-03/msg00785.html (9,464 bytes)
35. Re: [Amps] AL80A (score: 1): Author: R@contesting.com;Measures <r@somis.org>; Date: Fri, 31 Mar 2006 01:57:14 -0800; It is useful to have a 240v current-limiter to insert between the amp and the mains to facilitate troubleshooting HV PS problems such as this. Such a limiter requires a 240v plug, a 240v socket, a 10; /archives//html/Amps/2006-03/msg00793.html (11,090 bytes)
36. Re: [Amps] AL80A (score: 1): Author: Peter Chadwick <g3rzp@g3rzp.wanadoo.co.uk>; Date: Fri, 31 Mar 2006 12:56:29 +0200 (CEST); or so inch square of 3/4" plywood, two Edison medium screw-base lamp sockets, #16 wire, and two 300W 120v incandescent lamps.< Good heavens, Rich, that's far too old fashioned for the modern digital; /archives//html/Amps/2006-03/msg00794.html (7,601 bytes)

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