In a message dated 7/15/2006 9:51:24 AM Eastern Daylight Time,
n3ji@yahoo.com writes:
Since you mentioned that, why does the front of the SB-220 say "2KW LINEAR
AMPLIFIER" if it was designed as a 1kW input amp?
I've often wondered that...
Joe, N3JI
The SB-220 was rated at 2KW PEP input which is 1 KW DC input. According to
the tune up procedure outlined in a SB-220 operators manual, the output would
be about 600-650 watts, but most hams just gunned them all the way, maybe
thats one reason why alot of bandswitches did not hold up. So the transformer
was designed with these parameters in mind. I don't know what the Ameritron
Al-1500 was designed for, I would think 1500 watts output, but that amp
easily makes 2250 watts output with 100 watts of drive, AND the tube
parameters
are not exceeded at that level. Lou
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