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References: [ +from:norsan@bright.net: 71 ]

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21. [AMPS] YC-156 Cathode/Filament question (score: 1): Author: norsan@bright.net (Norman Hockler); Date: Sun, 06 May 2001 23:55:39 -0400; Eimac wants the filament temperature of the tube to stabilize before applying plate voltage or drive. The blower must be turned on when the filament voltage is applied also a good idea to leave the b; /archives//html/Amps/2001-05/msg00097.html (8,283 bytes)
22. [AMPS] YC-156 Cathode/Filament question (score: 1): Author: norsan@bright.net (Norman Hockler); Date: Sun, 29 Apr 2001 14:50:03 -0400; <html> Jeff, Who ever told you that the YC-156 was a giant 8877 does not know that they are talking about. The YC-156 is a 3CPX5000A7.<br> <br> It is made by Eimac for GE medical. One side of the fil; /archives//html/Amps/2001-04/msg00571.html (7,954 bytes)
23. [AMPS] SB-200 to 3cx800a7?? (score: 1): Author: norsan@bright.net (Norman Hockler); Date: Sat, 09 Dec 2000 17:33:57 -0500; The 92 handbook has a nice design for a 6M linear using the 3CX800A7. The power supply should be ok. You can mount a new filament transformer in the bottom. Tube can mount where the one of the 572's; /archives//html/Amps/2000-12/msg00163.html (7,557 bytes)
24. [AMPS] WTB: Murch 2000 tuner or big roller inductor (score: 1): Author: norsan@bright.net (Norman Hockler); Date: Sat, 11 Nov 2000 17:02:33 -0500; Hi Guys, Looking for an old Murch 2000 tuner for parts or a good roller inductor for an 8877 amp project. de Norm N8NH -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.c; /archives//html/Amps/2000-11/msg00111.html (6,703 bytes)
25. [AMPS] grounds (score: 1): Author: norsan@bright.net (Norman Hockler); Date: Sat, 18 Nov 2000 09:29:27 -0500; de Norm N8NH -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems: owner-amps@contesting.com; /archives//html/Amps/2000-11/msg00203.html (8,823 bytes)
26. [AMPS] medical pulls (score: 1): Author: norsan@bright.net (Norman Hockler); Date: Fri, 13 Oct 2000 07:19:45 -0400; Guys, 3-500Z tubes were used in the OLD medical equipment. The tubes that are coming off MRI lease and from scrapped units are: 3CPX800A7 YU-158 ( 8877) YC-156 (3CPX5000A7) I have a number of YC-156'; /archives//html/Amps/2000-10/msg00271.html (6,763 bytes)
27. [AMPS] Relays instead of a bandswitch (score: 1): Author: norsan@bright.net (Norman Hockler); Date: Wed, 06 Sep 2000 21:52:50 -0400; Mike... Dont see why this would not work. You need the right relay. Think you need to remove drive when switching. The band switch problem and associated wiring is why I prefer a tank using a roller; /archives//html/Amps/2000-09/msg00171.html (8,307 bytes)
28. [AMPS] Relays hanging up (score: 1): Author: norsan@bright.net (Norman Hockler); Date: Sat, 12 Aug 2000 12:50:25 -0400; It's called "contact wetting" Wetting can be obtained in two ways. 1. A difference of potential greater than about 8 volts across the contacts will break down the surface film and current will flow.; /archives//html/Amps/2000-08/msg00243.html (11,022 bytes)
29. [AMPS] Buzzing Relay (score: 1): Author: norsan@bright.net (Norman Hockler); Date: Thu, 06 Jul 2000 13:16:11 -0400; Sounds like a DC relay thats getting a high AC component. Check for a bad diode of filter cap for the relay supply. If its an AC relay increase the spring tension slightly. Norm N8NH (ex N8RGR) -- FA; /archives//html/Amps/2000-07/msg00036.html (7,583 bytes)
30. [AMPS] FS: BIG AMP TUBES AND PARTS (score: 1): Author: norsan@bright.net (Norman Hockler); Date: Sun, 04 Jun 2000 19:45:58 -0400; Hi All, YC-156 tubes available again. All tested and ok. Build your BIG amp !!! Also available: YC-158 (8877) matched pair (99 date code) 3CX800A7 tubes Dual socket assemblies for 8877 ( SK 2210) Sin; /archives//html/Amps/2000-06/msg00021.html (7,418 bytes)
31. [AMPS] WTB: ROLLER INDUCTOR (score: 1): Author: norsan@bright.net (Norman Hockler); Date: Sat, 24 Jun 2000 15:10:49 -0400; Hi All, Looking for a roller inductor suitable for single 8877 at 160 to 10m. Norm N8RGR -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: am; /archives//html/Amps/2000-06/msg00368.html (6,459 bytes)
32. [AMPS] ssr's in qro amps (score: 1): Author: norsan@bright.net (Norman Hockler); Date: Sun, 25 Jun 2000 14:41:09 -0400; My experience in using ss relays for over 20 years is that they "leak" only when used well below their rated capacity ie. a 20 amp relay loaded to only 25ma. Almost all ss relays use an LED optocoupl; /archives//html/Amps/2000-06/msg00383.html (10,954 bytes)
33. [AMPS] Remoting Bird meter from Line section? (score: 1): Author: norsan@bright.net (Norman Hockler); Date: Tue, 23 May 2000 21:42:37 -0400; George: I see two problems. First the signal from the Bird to the meter is 30 microamps or less and the phono plug (or any other connector) needs to be noble metal ( gold, silver, etc) for it to be r; /archives//html/Amps/2000-05/msg00267.html (9,170 bytes)
34. [AMPS] WTB HF 8877 AMP (score: 1): Author: norsan@bright.net (Norman Hockler); Date: Tue, 25 Apr 2000 21:17:29 -0400; Hi All, Looking for an RF deck for an 8877. I have some tubes so would I don't need an amp with a working tube. Complete amp with p/s or deck only ok. What have you??? Norm N8RGR -- FAQ on WWW: http:; /archives//html/Amps/2000-04/msg00147.html (6,670 bytes)
35. [AMPS] YC-156'S AVAILABLE (score: 1): Author: norsan@bright.net (Norman Hockler); Date: Thu, 17 Feb 2000 20:55:03 -0500; Hi All, I have some YC-156 tubes available. E-mail me direct if interested. Norm N8RGR -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesting.com Administrative requests:; /archives//html/Amps/2000-02/msg00313.html (6,620 bytes)
36. [AMPS] re: SB-200 to 6m using 4CX250B (score: 1): Author: norsan@bright.net (Norman Hockler); Date: Sat, 22 Jan 2000 16:18:20 -0500; Hi All.....IMHO a better choice for conversion of the SB-200 to 6 is the 3CX800. No screen voltage needed, HV ok for the tube. socket will mount in old tube hole...or mount on main chassis. Fill tran; /archives//html/Amps/2000-01/msg00479.html (9,128 bytes)
37. [AMPS] WTB 12-244 pf air variable (score: 1): Author: norsan@bright.net (Norman Hockler); Date: Sun, 07 Nov 1999 16:59:52 -0500; Hi All, Looking for a Johnson 154-1 or equiv. 12 to 244 pf. How much ??? Thanks... de Norm N8RGR -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesting.com Administrative; /archives//html/Amps/1999-11/msg00198.html (6,597 bytes)
38. [AMPS] Putting SB-200 on 160M (score: 1): Author: norsan@bright.net (Norman Hockler); Date: Mon, 22 Nov 1999 20:13:19 -0500; The September 1979 issue of QST has an article by Doug Demaw on how to convert the SB-200 to include 160m I have the article if you want a copy. I purchased two SB-200 some time back and one had 160; /archives//html/Amps/1999-11/msg00443.html (8,723 bytes)
39. [AMPS] KM1H SB-200 6m Conversion..you have one? (score: 1): Author: norsan@bright.net (Norman Hockler); Date: Sun, 24 Oct 1999 14:35:09 -0400; If you have an SB-200 conversion to 6 by CarI would like to talk to you. Please e-mail me. Thanks... de Norm N8RGR -- FAQ on WWW: http://www.contesting.com/ampsfaq.html Submissions: amps@contesting.c; /archives//html/Amps/1999-10/msg00608.html (7,108 bytes)
40. [AMPS] Silver Plating question (score: 1): Author: norsan@bright.net (Norman Hockler); Date: Sat, 18 Sep 1999 08:00:13 -0400; Guys... The advantage in silver plating is, of course, the lowering of resistance caused by the skin effect, and as we know all the current will travel on the surface of the cavity. The silver platin; /archives//html/Amps/1999-09/msg00156.html (8,553 bytes)

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