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41. Re: [Amps] AL811H metering (score: 1): Author: "Fortra" <fortra@siol.net>; Date: Tue, 1 May 2012 20:15:56 +0200; Hi Tom, your qoutes, puzzles me. Are we not talking about amps here ? Obviously, you are telling us more about yourself then we want to know! 73's Nermin S58DX . -- Original Message -- From: "Tom Hor; /archives//html/Amps/2012-05/msg00017.html (10,677 bytes)
42. Re: [Amps] TL922A recommended mods? (score: 1): Author: "Fortra" <fortra@siol.net>; Date: Tue, 14 Aug 2012 15:52:22 +0200; Jim, take a look at www.pa0fri.com So far, looks the best and simple solutions of the queries in question.. _______________________________________________ Amps mailing list Amps@contesting.com http:; /archives//html/Amps/2012-08/msg00200.html (8,631 bytes)
43. Re: [Amps] GU-74b amp by UX1UX (score: 1): Author: "Fortra" <fortra@siol.net>; Date: Fri, 16 Aug 2013 22:06:49 +0200; Hi Don, you have probably mixed GU-84B with GU-74b... Tube ( s ) in OM-3500 were not GU-74b's... Have not had such worries...bought a Dentron MLA-2500B, with original tubes :) When they failed we wil; /archives//html/Amps/2013-08/msg00102.html (8,644 bytes)
44. Re: [Amps] Ten Tec and Alpha announce merger (score: 1): Author: "Fortra" <fortra@siol.net>; Date: Tue, 13 May 2014 07:37:50 +0200; Hi Carl, does it means that Alpha is doing that well? What was the turnover of both companies before merger? regards, Nermin S58DX Cant say it comes as a surprise, Im surprised Ten Tec lasted as long; /archives//html/Amps/2014-05/msg00076.html (8,644 bytes)
45. Re: [Amps] 8875 in Dentron MLA 2500B (score: 1): Author: "Fortra" <fortra@siol.net>; Date: Sun, 9 Nov 2014 10:05:05 +0100; Hi Guys, one of the tubes, 8875 went south in my Dentron MLA 2500B. What is interesting, is that it has occasional contact between pins 5 and 6 when tapping on the body. Measured resistance in good t; /archives//html/Amps/2014-11/msg00020.html (6,830 bytes)
46. Re: [Amps] FL2100B Schematic (score: 1): Author: "Fortra" <fortra@siol.net>; Date: Sun, 16 Nov 2014 22:10:28 +0100; Greg, if i may so:) print those A4 pages and glue them with transparent tape. This is how i do, it when converting FL 2100B into amp with pair of GI7BT.. Dane S58D did the job... If you need manual w; /archives//html/Amps/2014-11/msg00034.html (7,978 bytes)
47. Re: [Amps] ARD 230A (score: 1): Author: "Fortra" <fortra@siol.net>; Date: Sat, 17 Jan 2015 23:45:06 +0100; Hi Luca, almost 10 years ago i did talk with Santi IK5DNF, about purchasing his ARD 230. He has 2 control units, one factory made and one made by his fellow amateur to control amplifier, without drad; /archives//html/Amps/2015-01/msg00139.html (7,678 bytes)
48. Re: [Amps] Question on installing new Amp tube (score: 1): Author: <fortra@siol.net>; Date: Mon, 3 Aug 2015 23:02:02 +0200; Hi Tony, last year in july, we have bought Henry 2KD Classic with a pair of 3-500Z for a friend S51ZZ. Amp was produced in 1984 and have had seen rare use. As it was stored for a couple of years, bef; /archives//html/Amps/2015-08/msg00003.html (8,910 bytes)
49. Re: [Amps] Henry 2002 144mhz tempo amplifer (score: 1): Author: <fortra@siol.net>; Date: Sat, 20 Feb 2016 18:16:04 +0100; Hi Andy, i have the full manual with schematic for our Tempo 2002 with pair of 8874, purchased back in 80's. I f you wish i might scan the schematic and send it to you ? Kr Nermin S58DX Hello to the; /archives//html/Amps/2016-02/msg00050.html (7,708 bytes)
50. Re: [Amps] KAPUT 8877'S -DISPOSAL (score: 1): Author: <fortra@siol.net>; Date: Wed, 22 Mar 2017 16:13:54 +0100; Noll, in our club we used to have Alpha 77D. I remember back in 80's that 8877 stopped working all of a sudden. Tube has been on the shelf for year or so, then we check the dc continuity of heaters a; /archives//html/Amps/2017-03/msg00142.html (7,748 bytes)
51. Re: [Amps] amplifier in 1960's QST (score: 1): Author: <fortra@siol.net>; Date: Mon, 4 Dec 2017 22:53:55 +0100; Hi Bill, i do remember seeing an article with 8 to 10 TV horizontal amplifier sweep tubes. They were Philips or Valvo, or Siemens, marked as PL519, PL509 and not sure PL505. There were also line of E; /archives//html/Amps/2017-12/msg00017.html (8,640 bytes)
52. Re: [Amps] amplifier in 1960's QST (score: 1): Author: <fortra@siol.net>; Date: Mon, 4 Dec 2017 23:13:02 +0100; Hi Bill again :) well, it was faster then i thought. Anyhow, check QEX June/July issue for 2KW-linear maplifier by Saulo Py2KO. Unfortunately my membership at ARRL does not allow me, to download the; /archives//html/Amps/2017-12/msg00018.html (9,441 bytes)
53. Re: [Amps] Alpha 87A problems (score: 1): Author: <fortra@siol.net>; Date: Sat, 29 Sep 2018 16:34:08 +0200; Hi Herb, try with those guys: https://islandamplifier.com/ bought some spares for my Alpha 77dx and www.df3cb.com/alpha87a/documentation/ hope, you will get it right :) Nermin S58DX --Izvorno sporoil; /archives//html/Amps/2018-09/msg00038.html (8,982 bytes)
54. Re: [Amps] 3CX800A7 cathode short (score: 1): Author: Nermin Bajramovic <fortra@siol.net>; Date: Sat, 16 Mar 2019 14:37:28 +0100; Hi Steve, back in 90s our club Alpha 77d have had 8877 cathode to grid short..we use an transformer and "dewelded" short..rejunaveted tube hold for another year, then we went to pair of 8877..though; /archives//html/Amps/2019-03/msg00022.html (7,849 bytes)
55. Re: [Amps] TL-922 FAN REPLACEMENT (score: 1): Author: <fortra@siol.net>; Date: Thu, 11 Apr 2019 18:26:39 +0200; Hi Dave, follow the link and investigate a bit more on their site. That company, Japan servo company makes the fans, or were delivering fans waay back for TL922.. Guess, everything that you need is t; /archives//html/Amps/2019-04/msg00034.html (9,814 bytes)
56. Re: [Amps] Need reliable source for ACOM2000A tubes GU74B? (score: 1): Author: "fortra" <fortra@siol.net>; Date: Wed, 23 Nov 2022 22:30:22 +0100; Hi Guys, could not pass, this, over the price... At least 10 years ago at Friedrichshafen messe, Hamradio, I have had bought a pair of GU74B (NOS) for 170,00 Euro... That was on stand of Ukrainan ama; /archives//html/Amps/2022-11/msg00054.html (9,516 bytes)
57. Re: [Amps] Need reliable source for ACOM2000A tubes GU74B? (score: 1): Author: "fortra" <fortra@siol.net>; Date: Wed, 23 Nov 2022 23:56:23 +0100; HI Peter, soo, those are different tubes? 4CX800 and GU74B? I have in my both Alphas 91b, GU74B... Peter that was a damn good deal.... But, then Golf costs 15000 to 20000 Dem, today, similar figures,; /archives//html/Amps/2022-11/msg00059.html (10,978 bytes)
58. Re: [Amps] searchable archives of amps reflector (score: 1): Author: "fortra" <fortra@siol.net>; Date: Tue, 27 Dec 2022 10:49:34 +0100; Hallo guys, please, enlighten me, if i could search for specific topic throughout the years, or i must saearch thread by thread? I am trying to gather as much info as possible on SGC 500 power smart; /archives//html/Amps/2022-12/msg00120.html (7,025 bytes)

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