Gurus,
Amp rookie here.
I got a SB-200 fitted with 2 811A tubes. I was assuming that this was a
plug-and-play replacement for the 572A. A local ham who
has an extensive but not detailed memory indicates that this was a common mod
due to 811 tubes being cheaper, but that it involved a
substantial amp mod and wasn't just a plug and play replacement.
I have searched the net for info on modding a SB-200 for 811 tubes and found
nothing. I also searched the QST index without luck. I
need to know the mod so that i can check if the previous owner (SK) did it
right, or if he completed it - this amp looks like it was
in the process of being refurbed at the time of his passing - maybe he was in
the middle of converting it to or from 811s.
Any help greatly appreciated - you will go over my head pretty quickly on this
stuff, so talk slowly ;-)
AI8P
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