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@dj0ip.de > wrote:
From: Rick Westerman [mailto: Rick@dj0ip.de]To: tentec@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@contesting.com[mailto:tentec-bounces@contesting.com]On Behalf Of
Ken BrownSent: Thursday, January 29, 2004 4:53 AMTo:
tentec@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
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