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1. [Amps] SB220 performer (score: 1): Author: "roller" <roller@comtech-data.se>; Date: Tue, 1 May 2007 18:56:29 +0200; hello! my sb220 is not performing as i wanted... and when i checked the voltage on the glow. it should be around 5v AC but its 4.1 volts on the tube pins.i have checked all cabels.but i dont understa; /archives//html/Amps/2007-05/msg00003.html (6,481 bytes)
2. Re: [Amps] SB220 performer (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Tue, 1 May 2007 13:42:39 -0400; How do you know the meter is good? What is the power line voltage? What is your mains frequency and voltage and which transformers does your amplifier have? _________________________________________; /archives//html/Amps/2007-05/msg00004.html (6,713 bytes)
3. Re: [Amps] SB220 performer (score: 1): Author: Peter Chadwick <g3rzp@g3rzp.wanadoo.co.uk>; Date: Tue, 1 May 2007 19:57:48 +0200 (CEST); Tom, Did Heath do different xfmrs for 50 and 60 Hz? Usually not a problem for us, since the 50Hz xfmr has enough iron for 60.... 73 Peter G3RZP _______________________________________________ Amps ma; /archives//html/Amps/2007-05/msg00005.html (6,809 bytes)
4. Re: [Amps] SB220 performer (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Tue, 1 May 2007 22:48:41 -0400; I had some SB220 Japanese transformers for ~100/200V 50Hz. I can't recall the part number. I really suspect the fellow just has a bad AC voltmeter. It would be nice to know his line voltage and how; /archives//html/Amps/2007-05/msg00013.html (7,315 bytes)

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