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21. Re: [Amps] Amp problem (score: 1): Author: "Baruch Zilbershatz" <4z4rb@bezeqint.net>; Date: Wed, 8 Dec 2010 22:59:17 +0200; @xGU81 will make a great amp and very quite!! No need for special Bose hi-tech noise canceling headphones like I have with the RF-110 jet roar... 4z4rb Baruch Zilbershatz Nitzanay-Oz 118 Nitzanay -Oz; /archives//html/Amps/2010-12/msg00076.html (8,404 bytes)
22. Re: [Amps] eb-104 bias question (score: 1): Author: "Baruch Zilbershatz" <4z4rb@bezeqint.net>; Date: Mon, 17 Jan 2011 07:37:17 +0200; There is more to that board. Make sure that the bypass caps near the ferrite beads where the 50v goes are much better than the one u got from CCI put more caps 0.1/200v on that line . Also make small; /archives//html/Amps/2011-01/msg00168.html (11,037 bytes)
23. Re: [Amps] switching mosfet rf amp - choice, schematic, and layout (score: 1): Author: "Baruch Zilbershatz" <4z4rb@bezeqint.net>; Date: Fri, 21 Jan 2011 07:04:16 +0200; Google dl9ah and look at his work 4z4rb Baruch Zilbershatz Nitzanay-Oz 118 Nitzanay -Oz 42836 ISRAEL phone: (+)972-052 8753838 All, I apologize for this request, it may be a bit like 'what is your fa; /archives//html/Amps/2011-01/msg00207.html (7,866 bytes)
24. Re: [Amps] New solid state kid on the block (score: 1): Author: "Baruch Zilbershatz" <4z4rb@bezeqint.net>; Date: Mon, 31 Jan 2011 18:42:25 +0200; I made some tests with that animal. It is more intended for class c or pulse in MRI systems at class AB it is not better than the 578 that is for linear work. Made 2 boards one regular FR4 the other; /archives//html/Amps/2011-01/msg00464.html (10,361 bytes)
25. Re: [Amps] New solid state kid on the block (score: 1): Author: "Baruch Zilbershatz" <4z4rb@bezeqint.net>; Date: Mon, 31 Jan 2011 22:59:16 +0200; True By the way tomita stopped making the ferrite( large 2 holes) There is no one else... 4z4rb Baruch Zilbershatz Nitzanay-Oz 118 Nitzanay -Oz 42836 ISRAEL phone: (+)972-052 8753838 A little correct; /archives//html/Amps/2011-02/msg00002.html (12,812 bytes)
26. [Amps] RF110A (score: 1): Author: "Baruch Zilbershatz" <4z4rb@bezeqint.net>; Date: Thu, 24 Mar 2011 02:46:57 +0200; I have parted a HARRIS rf-110A And posted the parts on eBay on my store :4z4rb Thanks Baruch If interested in other parts contact 4z4rb@bezeqint.net Thanks all 4z4rb Baruch Zilbershatz Nitzanay-Oz 11; /archives//html/Amps/2011-03/msg00180.html (6,846 bytes)
27. [Amps] Question #2: 4-125A linear amplifier (score: 1): Author: "Baruch Zilbershatz" <4z4rb@bezeqint.net>; Date: Thu, 12 May 2011 05:56:27 +0300; Use G2DAF circuit 4z4rb Baruch Zilbershatz Nitzanay-Oz 118 Nitzanay -Oz 42836 ISRAEL phone: (+)972-052 8753838 _______________________________________________ Amps mailing list Amps@contesting.com ht; /archives//html/Amps/2011-05/msg00072.html (6,662 bytes)
28. [Amps] 4CX1000A in super cathode (score: 1): Author: "Baruch Zilbershatz" <4z4rb@bezeqint.net>; Date: Fri, 13 May 2011 20:58:03 +0300; A while ago someone posted a link to a pdf file to a CQ magazine 1970 article on a super cathode amp Can anyone please repost or send link or file? 4z4rb Baruch Zilbershatz Nitzanay-Oz 118 Nitzanay -; /archives//html/Amps/2011-05/msg00088.html (6,492 bytes)
29. [Amps] New NXP BLF578XR 1200W LDMOS FET is "indestructible" (score: 1): Author: "Baruch Zilbershatz" <4z4rb@bezeqint.net>; Date: Fri, 22 Jul 2011 19:55:09 +0300; I made an amp with these Single unit with a single device You can arc weld with it!! 4z4rb Baruch Zilbershatz Nitzanay-Oz 118 Nitzanay -Oz 42836 ISRAEL phone: (+)972-052 8753838 _____________________; /archives//html/Amps/2011-07/msg00263.html (8,425 bytes)
30. Re: [Amps] New NXP BLF578XR 1200W LDMOS FET is "indestructible" (score: 1): Author: "Baruch Zilbershatz" <4z4rb@bezeqint.net>; Date: Sat, 23 Jul 2011 02:58:52 +0300; Igot 4 devices 2 were 578XR and two had no printing at all on. Got them as samples so I have no idea about price sorry. As far as I can say this device needs cooling. But all that scary talk about su; /archives//html/Amps/2011-07/msg00270.html (10,042 bytes)
31. [Amps] New NXP BLF578XR 1200W LDMOS FET is "indestructible" (score: 1): Author: "Baruch Zilbershatz" <4z4rb@bezeqint.net>; Date: Sat, 23 Jul 2011 18:37:34 +0300; Hello there The method you describe is the good one with the small tub for these devices. I do not have a mechanical tool shop like you guys my means are limited I polish the copper slaband use an co; /archives//html/Amps/2011-07/msg00278.html (9,430 bytes)
32. Re: [Amps] 4 x Glass Glowing tubes (score: 1): Author: "Baruch 4z4rb" <4z4rb@bezeqint.net>; Date: Tue, 28 Feb 2012 20:46:49 +0200; the GU81 works best as a grounded cathode Russian hams run it up to 3kv on plate and 800v on screen These giants will take more abuse than any other lamp I know!!!!! 4z4rb Baruch Zilbershatz Nitzanay; /archives//html/Amps/2012-02/msg00320.html (6,500 bytes)
33. [Amps] FS: 25 Ohm coax (score: 1): Author: "Baruch 4z4rb" <4z4rb@bezeqint.net>; Date: Thu, 21 Jun 2012 23:00:27 +0300; Hello all I have for sale a very fine silver plated 25 Ohm coax cable. It is used in solid state power amplifiers for transmission line transformers "Z" matching Made by Raychem. Inner conductor is 1; /archives//html/Amps/2012-06/msg00356.html (6,909 bytes)
34. [Amps] EB104- modifications (score: 1): Author: "Baruch 4z4rb" <4z4rb@bezeqint.net>; Date: Mon, 9 Jul 2012 06:15:13 +0300; Here is a link to a review on EB 104 modifications <http://www.eham.net/ehamforum/smf/index.php/topic,83561.0.html> http://www.eham.net/ehamforum/smf/index.php/topic,83561.0.html Getting the most out; /archives//html/Amps/2012-07/msg00138.html (6,932 bytes)
35. [Amps] 4z4rb amps (score: 1): Author: "Baruch Zilbershatz 4z4rb" <4z4rb@bezeqint.net>; Date: Wed, 2 Jul 2014 21:37:18 +0300; All my amps are LINEAR Class AB Seems to be much confusion Current readings are Avg And not class C Bias is set for class ab and is tracking thermally and regulated Thanks and 73's __________________; /archives//html/Amps/2014-07/msg00010.html (6,300 bytes)
36. Re: [Amps] 4z4rb amps (score: 1): Author: "Baruch Zilbershatz 4z4rb" <4z4rb@bezeqint.net>; Date: Wed, 2 Jul 2014 23:29:37 +0300; Hello Sir! Amps are made for 160-6m Slight trade off to et the right balance in power/bandwidth so there is about 10% drop on 6 As for duty cycle If the boards are mounted as needed on a proper heat; /archives//html/Amps/2014-07/msg00012.html (8,712 bytes)

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