[TenTec] SB200 and SB220 Differences?

[Ken Brown]

SB-200 uses a pair of 572B triodes. The most I have seen come out of and 
SB-200 is maybe 800 Watts, and I suspect there was some reflected power 
making the  power reading higher than real output. Six hundred or 650 
watts output can be expected. The SB-201 is the post 10 meter capability 
ban version of the same amplifier.

SB-220 uses a pair of 3-500Z triodes and will put out about 1200 watts.

DE N6KB