Mail Archive Search: <+from:yo9fzs@office.deck.ro>

Results:

References: [ +from:yo9fzs@office.deck.ro: 81 ]

Total 81 documents matching your query.

21. [AMPS] Bypassing Screen of 4cx800a for 50 MHz (score: 1): Author: yo9fzs@office.deck.ro (yo9fzs); Date: Tue, 18 Dec 2001 09:39:03 +0200; Hello Jack The grounded screen work ok for the 4CX800. This configuration was used for sure by some hams in Ukraine with very good results. Using other sockets than the originals was experimented als; /archives//html/Amps/2001-12/msg00316.html (12,164 bytes)
22. [AMPS] Tube Choices - Deliberations (score: 1): Author: yo9fzs@office.deck.ro (yo9fzs); Date: Thu, 27 Dec 2001 09:25:42 +0200; Hello Phil If you are using a GS23 at 3.2kV on 432, this confirm others peoples findings that these russian tubes are quite good (the GS23 have catalog peak anode spec of only 3.5kV). Both GU84 and G; /archives//html/Amps/2001-12/msg00488.html (10,193 bytes)
23. [AMPS] Tube Choices - Deliberations (score: 1): Author: yo9fzs@office.deck.ro (yo9fzs); Date: Thu, 27 Dec 2001 16:26:52 +0200; Hello Jeff The adress for the GU73/GU84/GU78 amp is: http://krasnodar.online.ru/hamradio/pa748.htm You can find other interesting amplifier relating diagrams on: http://krasnodar.online.ru/hamradio/c; /archives//html/Amps/2001-12/msg00489.html (8,226 bytes)
24. [AMPS] Gi7B Tube Amps (score: 1): Author: yo9fzs@office.deck.ro (yo9fzs); Date: Fri, 16 Nov 2001 09:21:26 +0200; Hi all, As Ian said, the cooler is attached using a a slotted nut. I remember that someone had the idea of using heatsink compound between the anode and its cooler for improving the tube cooling. I a; /archives//html/Amps/2001-11/msg00278.html (11,124 bytes)
25. [AMPS] Gi7B Tube Amps (score: 1): Author: yo9fzs@office.deck.ro (yo9fzs); Date: Sat, 17 Nov 2001 19:22:48 +0200; Hello Ian, Probably my GI7 problem is not so often. The other tube I have is ok. The russian tubes helped hams from Europe to build good and cheap amplifiers. At the Friedrichshafen hamfest were for; /archives//html/Amps/2001-11/msg00310.html (11,224 bytes)
26. [AMPS] new FETs (score: 1): Author: yo9fzs@office.deck.ro (yo9fzs); Date: Wed, 28 Nov 2001 11:29:08 +0200; Hello Alex Congratulations for your work. How much differ the bias for such low temp? Keeping the die at -187F for a MRF157 device mean a lower cooling temp for the transistor case than the -187F spe; /archives//html/Amps/2001-11/msg00452.html (10,051 bytes)
27. [AMPS] Fan->make correct and 8877 vs GS35 (score: 1): Author: yo9fzs@office.deck.ro (yo9fzs); Date: Mon, 08 Oct 2001 09:16:25 +0200; Hello Xu, These (axial) fans are not suitable for cooling the 4CX1000 tube, especially if you want to get high or full output. Anyway, I saw many russian amplifiers made by UA hams, they are using su; /archives//html/Amps/2001-10/msg00161.html (8,567 bytes)
28. [AMPS] Solitron SPF-90 (score: 1): Author: yo9fzs@office.deck.ro (yo9fzs); Date: Tue, 09 Oct 2001 13:01:01 +0200; Hi all, I have two spare rectifier modules made by Solitron, the SPF-90 and SPF-30 used in a Harris RF-124 PS. Anyone having info about their ratings? Thanks, 73s, Traian -- FAQ on WWW: http://www.co; /archives//html/Amps/2001-10/msg00249.html (6,391 bytes)
29. [AMPS] Use of Svetlana. 4CX800 in amp (score: 1): Author: yo9fzs@office.deck.ro (yo9fzs); Date: Mon, 22 Oct 2001 09:12:46 +0200; Hello Jim A diagram for a GG 4CX800/GU74 linear is on http://krasnodar.online.ru/hamradio (russian). It may work ok as the builder say, but I think that a AB1 service will be better. At one time a ru; /archives//html/Amps/2001-10/msg00419.html (7,563 bytes)
30. [AMPS] 8122/4662 Substitute?? (score: 1): Author: yo9fzs@office.deck.ro (yo9fzs); Date: Mon, 10 Sep 2001 09:13:17 +0300; Hi Bill, I was also interested for this. I had search for russian 8122 replacement for a Harris RF110, but I found none. Also, by my catalogue (some old), I didn't find even an approximate replacemen; /archives//html/Amps/2001-09/msg00169.html (7,774 bytes)
31. [AMPS] 8122/4662 Substitute?? (score: 1): Author: yo9fzs@office.deck.ro (yo9fzs); Date: Tue, 11 Sep 2001 09:01:33 +0300; Thanks, I also was considering this, as the 4CX250 or the replacements can be easy to found and are cheap. But I'll make something else. I will remove the 8122 driver module and will use the 4CX1500B; /archives//html/Amps/2001-09/msg00196.html (8,492 bytes)
32. [AMPS] 8122/4662 Substitute?? (score: 1): Author: yo9fzs@office.deck.ro (yo9fzs); Date: Tue, 11 Sep 2001 12:45:14 +0300; Hello Phil, and thanks for info. It seems that (almost) all hams who use the RF110A are bypassing the 8122 drivers and use passive grid configuration. Other way, why to attenuate the 10 to 20W out fr; /archives//html/Amps/2001-09/msg00199.html (8,130 bytes)
33. [AMPS] GU43b on six?? (score: 1): Author: yo9fzs@office.deck.ro (yo9fzs); Date: Wed, 18 Jul 2001 09:23:21 +0300; GU43B and sockets for them were for sale at the european hamfest at Friedrichshafen. The Funkamateur magazine sold them for about 190 DM. Try also classifieds on www.hamradio.de Some are using home m; /archives//html/Amps/2001-07/msg00202.html (7,518 bytes)
34. [AMPS] New 3cx800a7 and 4cx1600b Svetlanas (score: 1): Author: yo9fzs@office.deck.ro (yo9fzs); Date: Fri, 20 Jul 2001 11:53:02 +0300; Hello Remigijus, These pairs of tubes are equivalents (IDENTICAL): GU74 = 4CX800, GS23 = 4CX1600U, and also GU13 = 813 (but, as with the GU74, the GU13 is conservatively rated in the russian catalogu; /archives//html/Amps/2001-07/msg00235.html (11,473 bytes)
35. [AMPS] RF110 manual (score: 1): Author: yo9fzs@office.deck.ro (yo9fzs); Date: Mon, 23 Jul 2001 11:58:40 +0300; Hello amp fellows, Some time ago I needed some info about the Harris RF110A linear and didn't found it on the web. Now I have the RF110A Instruction Manual (nr. 1932-0005) including the diagrams and; /archives//html/Amps/2001-07/msg00285.html (6,974 bytes)
36. [AMPS] Chip Capacitors for Filament ,Grid, or Screen Bypass? (score: 1): Author: yo9fzs@office.deck.ro (yo9fzs); Date: Thu, 07 Jun 2001 09:01:35 +0300; Hi Todd, I have a russian made socket for the GU74B/4CX800 tube, it is a different type, not the SK1A used by Svetlana. This socket have not the internal screen capacitor, but eight (big) chip capaci; /archives//html/Amps/2001-06/msg00062.html (8,336 bytes)
37. [AMPS] sorry (score: 1): Author: yo9fzs@office.deck.ro (yo9fzs); Date: Sat, 09 Jun 2001 09:33:36 +0300; Sorry for my mistake, With my previous reply, i sent an attachment to this reflector also. It is not so easy with the great amount of mail... sorry again, have a nice weekend, Traian -- FAQ on WWW: h; /archives//html/Amps/2001-06/msg00080.html (6,352 bytes)
38. [AMPS] Harris RF111 PS for RF110 amp (score: 1): Author: yo9fzs@office.deck.ro (yo9fzs); Date: Sat, 12 May 2001 18:38:43 +0300; Hello amp fellows, Anyone having the electrical diagrams for the RF111A power supply (115V, 400 Hz, 3 phase) included in some Harris RF110A amps who can scan and send it to me? I suspect that the blo; /archives//html/Amps/2001-05/msg00211.html (6,998 bytes)
39. [AMPS] Harris RF111 PS for RF110 amp (score: 1): Author: yo9fzs@office.deck.ro (yo9fzs); Date: Sat, 12 May 2001 19:20:16 +0300; Hello Phil, Yes, I know about the RF112A, I have the service manual. This RF110A have INSIDE it the entire PS labeled RF111A. The amp is from an aircraft (3 phase 115V 400Hz power line) so the PS is; /archives//html/Amps/2001-05/msg00214.html (9,151 bytes)
40. [AMPS] Electrolytics (score: 1): Author: yo9fzs@office.deck.ro (yo9fzs); Date: Thu, 24 May 2001 18:58:54 +0300; Here, where I'm working we sold about 10000 computer+monitors pairs plus other thousands of other monitors sold separately. We had to provide warranty for about 2000 of them, the rest being warranted; /archives//html/Amps/2001-05/msg00411.html (9,942 bytes)

Current List: 21 - 40
Page: [1] [2] [3] [4] [5]