Search String: Display: Description: Sort:

Results:

References: [ +from:hsu4qro@gmail.com: 254 ]

Total 254 documents matching your query.

21. Re: [Amps] microwave transformers (score: 1)
Author: "Hsu" <hsu4qro@gmail.com>
Date: Thu, 12 Mar 2009 11:18:16 +0800
I had ever to contact with a microoven transformer manufacturer,the list price for 1000w microwave oven's only $10/ea. the core not hypersil and the the wire's material is Al,Not Cu. 73!Hsu -- Origin
/archives//html/Amps/2009-03/msg00334.html (9,219 bytes)

22. [Amps] HV transformer Hi-Pot tester (score: 1)
Author: "Hsu" <hsu4qro@gmail.com>
Date: Fri, 10 Apr 2009 11:26:53 +0800
Hi, I want to order 10 HV trasnformers for my another hi-pot tester(the manufactorer's minimum order is 10 piece). Anyone would like to share these with me? Specs:input(220/110V 50Hz 65/130mA),output
/archives//html/Amps/2009-04/msg00112.html (6,998 bytes)

23. [Amps] HV transformer Hi-Pot tester ,make correct (score: 1)
Author: "Hsu" <hsu4qro@gmail.com>
Date: Fri, 10 Apr 2009 11:32:47 +0800
The HV output current should be short circuit current,NOT out put current, the transformer is leak magnetic type,not easy to burn. 73!Hsu _______________________________________________ Amps mailing
/archives//html/Amps/2009-04/msg00113.html (6,446 bytes)

24. [Amps] HV transformer, HV resistor , HV diode, 8877 and 4Cx250B socket socket, RCA 8122 (score: 1)
Author: "Hsu" <hsu4qro@gmail.com>
Date: Wed, 29 Apr 2009 06:31:44 +0800
Hi, I want to order 10 HV transformers for my portable hi-pot tester(the manufacturer's minimum order is 10 pcs). Anyone would like to share these with me? Specs:input(220/110V 50Hz, 65/130mA),output
/archives//html/Amps/2009-04/msg00392.html (8,778 bytes)

25. [Amps] 8122 For sale (score: 1)
Author: "Hsu" <hsu4qro@gmail.com>
Date: Mon, 29 Jun 2009 06:28:36 +0800
Hi, I have some brand new NOS RCA 8122 for sale,I ask $350/ea or tell me what's your best offer. JPG on request. 73!Hsu _______________________________________________ Amps mailing list Amps@contesti
/archives//html/Amps/2009-06/msg00135.html (6,227 bytes)

26. [Amps] 8122 and others For sale (score: 1)
Author: "Hsu" <hsu4qro@gmail.com>
Date: Mon, 29 Jun 2009 09:53:16 +0800
PS, I have some others tube for sale I have EIMAC 4CX1000A with origional paper box and Chinese 4CX1000A(FU-100F),all brand new,EIMAC 4CX1000A: $400 Chinese 4CX1000A(FU-100F),$200. I have a EIMAC 4CX
/archives//html/Amps/2009-06/msg00138.html (7,346 bytes)

27. Re: [Amps] NCL2000 (score: 1)
Author: "Hsu" <hsu4qro@gmail.com>
Date: Tue, 30 Jun 2009 12:18:02 +0800
That is natural, My friend pick up a Heny Tempo 2001, the cost only $250, he ask me to find a pair inexpensive brand new NOS EIMAC 3CX8874A, a guy who in this list ask $400/ea.Could you help him to f
/archives//html/Amps/2009-06/msg00146.html (7,591 bytes)

28. Re: [Amps] 8874? (score: 1)
Author: "Hsu" <hsu4qro@gmail.com>
Date: Thu, 2 Jul 2009 06:55:18 +0800
Hi, Anyone have experience in 8874/3CX400A7 to GI-7B convation? 73!Hsu _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listin
/archives//html/Amps/2009-07/msg00028.html (7,736 bytes)

29. Re: [Amps] Grounded Grid(Screen) 4CX250B power gain (score: 1)
Author: "Hsu" <hsu4qro@gmail.com>
Date: Sat, 11 Jul 2009 20:45:19 +0800
Hi, Anyone have experience in grounded grid a pair 4CX250Bs amplifier? could you tell me how much power gain of this configation? This weekend, I'm planing to do a tube conversion in my friend's Henr
/archives//html/Amps/2009-07/msg00144.html (6,941 bytes)

30. Re: [Amps] Grounded Grid(Screen) 4CX250B power gain (score: 1)
Author: "Hsu" <hsu4qro@gmail.com>
Date: Mon, 13 Jul 2009 16:22:41 +0800
Hi,Alex There are some info on this web http://home.comcast.net/~k7rld/4cx250bamplifier.htm, and there is an article in 73 magazine march ,P50-54 S.W.Hochman,The Ample Amplifier,I only have a digest,
/archives//html/Amps/2009-07/msg00173.html (10,430 bytes)

31. Re: [Amps] Grounded Grid(Screen) 4CX250B power gain (score: 1)
Author: "Hsu" <hsu4qro@gmail.com>
Date: Mon, 13 Jul 2009 16:26:26 +0800
Hi, Don Could you tell me how much power to drive this amplifier? how much power output?your 4CX250B GG configation are same as I mentioned(screen as grid and the tied the grid and cathode together)?
/archives//html/Amps/2009-07/msg00174.html (9,484 bytes)

32. Re: [Amps] Grounded Grid(Screen) 4CX250B power gain (score: 1)
Author: "Hsu" <hsu4qro@gmail.com>
Date: Mon, 13 Jul 2009 16:33:22 +0800
Sorry,I missed the year:here is an article in 73 magazine ,March 1973 ,P50-54 S.W.Hochman,The Ample Amplifier. _______________________________________________ Amps mailing list Amps@contesting.com ht
/archives//html/Amps/2009-07/msg00175.html (11,153 bytes)

33. Re: [Amps] Grounded Grid(Screen) 4CX250B power gain (score: 1)
Author: "Hsu" <hsu4qro@gmail.com>
Date: Mon, 13 Jul 2009 21:34:01 +0800
Nin hao George, Have your built the amplifier like this GG configation?there are two article give the result,100W in and 600w out,but I doubt these result. 73! Hsu ___________________________________
/archives//html/Amps/2009-07/msg00176.html (9,839 bytes)

34. Re: [Amps] Grounded Grid(Screen) 4CX250B power gain (score: 1)
Author: "Hsu" <hsu4qro@gmail.com>
Date: Mon, 20 Jul 2009 07:15:06 +0800
Hi, George, I just modyfy the Henry TEMPO 2001 convert the 3CX400A7 to 4CX250B in GG configation, tied the cathode and G1(serial a 100ohm resistor) together. I'll test it today. 73!Hsu -- Original Me
/archives//html/Amps/2009-07/msg00218.html (9,039 bytes)

35. [Amps] SG500 mobil amplfier for sale (score: 1)
Author: "Hsu" <hsu4qro@gmail.com>
Date: Thu, 27 Aug 2009 08:13:07 +0800
I have a SGC SG500 amplifier for sale, $ 680 shipped,only used for few minutes in my car,but the top cover and heat sink with small scaur. 73!Hsu _______________________________________________ Amps
/archives//html/Amps/2009-08/msg00521.html (6,583 bytes)

36. Re: [Amps] FU728F Tube (score: 1)
Author: "Hsu" <hsu4qro@gmail.com>
Date: Tue, 29 Sep 2009 15:17:14 +0800
FU-728F was design by Chinese independently, it can not replace 4CX1500Bdirect, you need do a bit some work ( Chanage filamet voltage to 9V ) but more powerful, it can output morethan 2000W @Ua=3200V
/archives//html/Amps/2009-09/msg00352.html (6,960 bytes)

37. Re: [Amps] OM power power supply design (score: 1)
Author: "Hsu" <hsu4qro@gmail.com>
Date: Wed, 9 Dec 2009 23:30:32 +0800
Indeed, the OM's transformer is a unique design, the toroidal cores are light than EI cores and two transformers disperse weihght,it make possible to ship with amplifier togeter and needn't pull the
/archives//html/Amps/2009-12/msg00246.html (9,484 bytes)

38. [Amps] off topic : China amateur satellite (score: 1)
Author: "Hsu" <hsu4qro@gmail.com>
Date: Tue, 15 Dec 2009 20:42:08 +0800
The first China amateur satllite will be send very soon. 73!Hsu _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2009-12/msg00336.html (6,478 bytes)

39. [Amps] Topics about Class A amplifier (score: 1)
Author: "Hsu" <hsu4qro@gmail.com>
Date: Sun, 20 Dec 2009 08:58:11 +0800
a) Anyone have experience to modify his transceiver's final to Class A mode as FT-1000MP MK V? I think if we haven't good enough driver, the external Power amplifier cann't be have good 3rd IMD perfo
/archives//html/Amps/2009-12/msg00486.html (7,754 bytes)

40. Re: [Amps] Matched set 8122's needed (score: 1)
Author: "Hsu" <hsu4qro@gmail.com>
Date: Mon, 5 Apr 2010 22:19:07 +0800
hi, I have some brand new 8122s, but I can not matched pair, I haave no the equip what using this tube. Regards Hsu -- Original Message -- From: "Michael Zeglen" <kl7ai@hotmail.com> To: <amps@contest
/archives//html/Amps/2010-04/msg00092.html (8,226 bytes)

Current List: 21 - 40
Page: [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13]
This search system is powered by Namazu