[TenTec] SB200 and SB220 Differences?

[Larry Greenberg N5BEA]

 I operated a SB200 for a long time.  It's not going to produce over about 600 watts pep even with a new set of "Killer Bs".  Operating at 220 nd greatly quietens the amp and increases it's efficiency.  The tubes are realativly  cheap and easy.  10 meters is included without  any addional fixes. Larry GreenbergN5BEA--- On Thu 01/29, Rick Westerman < Rick at dj0ip.de > wrote:
From: Rick Westerman [mailto: Rick at dj0ip.de]To: tentec at contesting.comDate: Thu, 29 Jan 2004 09:46:34 +0100Subject: RE: [TenTec] SB200 and SB220 Differences?The ORIGINAL SB-200 did put out about 800w.Heathkit soon changed it to reduce the power to about 600w.The 800w version was killing the sales of the SB-220 and theywanted to have a greater difference between the two amps.I owned one of each, but not at the same time. I never botheredto sort out what they changed.Don't know if it was the P.S. or just taps on the output tank.73Rick-----Original Message-----From: tentec-bounces at contesting.com[mailto:tentec-bounces at contesting.com]On Behalf Of Ken BrownSent: Thursday, January 29, 2004 4:53 AMTo: tentec at contesting.comSubject: Re: [TenTec] SB200 and SB220 Differences?SB-200 uses a pair of 572B triodes. The most I have seen come outof andSB-200 is maybe 800 Watts, and I suspect there was some reflectedpowermaking the power reading higher than real output. Six hundred or650watts out
 put can be expected. The SB-201 is the post 10 metercapabilityban version of the same amplifier.SB-220 uses a pair of 3-500Z triodes and will put out about 1200watts.DE N6KB_______________________________________________TenTec mailing listTenTec at contesting.comhttp://lists.contesting.com/mailman/listinfo/tentec_______________________________________________TenTec mailing listTenTec at contesting.comhttp://lists.contesting.com/mailman/listinfo/tentec

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