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1. [AMPS] Cleaning aluminum variable capacitors (score: 1): Author: w7xu@dtgnet.com (w7xu); Date: Sun, 23 Dec 2001 05:08:51 +0000; Hello all, Another source of polishing would be to use a case tumbler used to polish cartridge cases when reloading ammunition. Walnut shells or ground up corn cobs are used as media, and are availab; /archives//html/Amps/2001-12/msg00000.html (7,295 bytes)
2. [AMPS] Re: 6m amp blocking caps (score: 1): Author: w7xu@dtgnet.com (w7xu); Date: Tue, 04 Dec 2001 19:00:47 +0000; Hi, Speaking of blocking capacitors (and at the risk of starting a range war)-- My 6m amp, which uses an 8877 and a pi network, seemed to suffer from the same problem as Lance's -- I could get 1500 W; /archives//html/Amps/2001-12/msg00084.html (12,001 bytes)
3. [AMPS] Re: [TowerTalk] AL-1500 problems (score: 1): Author: w7xu@dtgnet.com (w7xu); Date: Thu, 20 Dec 2001 04:42:15 +0000; Hi Jose, I have an AL-1500 with the QSK board and this has been an occasional problem for me also. Sorry, but I don't know the cause or the cure. 73, Arliss W7XU -- FAQ on WWW: http://www.contesting.; /archives//html/Amps/2001-12/msg00376.html (8,199 bytes)
4. [AMPS] Dentron DTR-2000 meter (score: 1): Author: w7xu@dtgnet.com (W7XU Arliss); Date: Thu, 11 Jan 2001 02:43:56 +0000; Anyone happen to have a plate current meter (0 - 1 A) laying around for a Dentron DTR-2000? 73, Arliss W7XU -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administ; /archives//html/Amps/2001-01/msg00332.html (6,496 bytes)
5. [AMPS] Dentron DTR-2000 meter (score: 1): Author: w7xu@dtgnet.com (W7XU Arliss); Date: Thu, 11 Jan 2001 02:44:11 +0000; Anyone happen to have a plate current meter (0 - 1 A) laying around for a Dentron DTR-2000L? 73, Arliss W7XU -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Adminis; /archives//html/Amps/2001-01/msg00333.html (6,492 bytes)
6. [AMPS] Dayton blowers (score: 1): Author: w7xu@dtgnet.com (W7XU Arliss); Date: Mon, 15 Jan 2001 05:54:34 +0000; Hello all, Where can one find specifications for various models of Dayton blowers? I've done some looking on the web but haven't had much luck. I have a second hand amp I picked up that runs an 8877; /archives//html/Amps/2001-01/msg00353.html (6,947 bytes)
7. [AMPS] Dayton blowers (score: 1): Author: w7xu@dtgnet.com (W7XU Arliss); Date: Tue, 16 Jan 2001 18:17:13 +0000; Thanks for all the replies re: Dayton blowers. It turns out that the 1C180, which I thought was too quiet, is just adequate to cool an 8877. Several folks suggested I contact Grainger. The first and; /archives//html/Amps/2001-01/msg00394.html (7,068 bytes)
8. [AMPS] YC-156 (score: 1): Author: w7xu@dtgnet.com (W7XU Arliss); Date: Mon, 22 Jan 2001 07:43:10 +0000; Hi, Where or from whom may I obtain a YC-156 (pull)? Thanks & 73, Arliss W7XU -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQUEST@; /archives//html/Amps/2001-01/msg00549.html (6,362 bytes)
9. [AMPS] AL-1500 problem (score: 1): Author: w7xu@dtgnet.com (W7XU Arliss); Date: Mon, 13 Dec 1999 08:40:48 +0000; Hi, I have an AL-1500, no longer under warranty, with the built in QSK board. Over the weekend it developed a problem: received signals are markedly attenuated when the amplifier is off or in the sta; /archives//html/Amps/1999-12/msg00135.html (7,557 bytes)
10. [AMPS] 6m amp (score: 1): Author: w7xu@dtgnet.com (W7XU Arliss); Date: Sun, 14 Feb 1999 08:47:44 +0000; Hi, I think the efficiency of my homebrew 6m 8877 amp is lower than it should be (currently about 50 %), and am looking for some suggestions on how to improve the situation. The amp runs about 2800 V; /archives//html/Amps/1999-02/msg00371.html (7,713 bytes)
11. [AMPS] 6m amp (score: 1): Author: w7xu@dtgnet.com (W7XU Arliss); Date: Sun, 14 Feb 1999 16:13:35 +0000; Oops -- some clarificaton needed. The load is 50 ohms, non reactive. The coil is 3/8" tubing, not 5/16". Sorry for the confusion. 73, Arliss -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submi; /archives//html/Amps/1999-02/msg00376.html (8,248 bytes)
12. [AMPS] AL-1500 oscillation? (score: 1): Author: w7xu@dtgnet.com (W7XU Arliss); Date: Sun, 21 Feb 1999 09:48:18 +0000; I noticed a problem with my Ameritron AL-1500 amp tonight. When the amp is keyed in the CW position with no drive (but with the exciter connected to the input of the amp), all seems fine, with no RF; /archives//html/Amps/1999-02/msg00560.html (7,591 bytes)
13. [AMPS] Re: AL-1500 Oscillation (score: 1): Author: w7xu@dtgnet.com (W7XU Arliss); Date: Mon, 22 Feb 1999 19:07:03 +0000; A progress report and answering of some questions re: the oscillation in my AL-1500: The amplifier is a MFJ version. I called Ameritron tech. support today. Their only suggestion was to check the wir; /archives//html/Amps/1999-02/msg00616.html (7,623 bytes)
14. [AMPS] More on AL-1500 oscillation (score: 1): Author: w7xu@dtgnet.com (W7XU Arliss); Date: Mon, 22 Feb 1999 20:05:02 +0000; A couple of other pieces of information on this problem: No oscillation occurs when the input is connected to a 50 ohm dummy load. It does occur with a 50 ohm dummy load on the output and the input e; /archives//html/Amps/1999-02/msg00618.html (7,253 bytes)
15. [AMPS] [Fwd: AL-1500 oscillation] (score: 1): Author: w7xu@dtgnet.com (W7XU Arliss); Date: Tue, 23 Feb 1999 17:50:42 +0000; This is a multi-part message in MIME format. --79F56E1B7552AF022FF925BB Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit It seems likely that the cause of the oscillation in; /archives//html/Amps/1999-02/msg00634.html (9,412 bytes)
16. [AMPS] 8877 HV (score: 1): Author: w7xu@dtgnet.com (W7XU Arliss); Date: Sun, 07 Jun 1998 05:03:31 +0000; Hello all -- Is it permissible to have HV applied to an 8877 during its 3 minute warm up period, assuming the tube is biased off? Or does the tube need to have only filament voltage applied for 3 min; /archives//html/Amps/1998-06/msg00101.html (6,673 bytes)

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