Hello guys,
I have a 744A type and wanted to do the same ..increase bandwidth.. By
accident I met a technician of tektronix and talked about this mod. He told
me that the input amplifiers of a 500MHz scope could go to 1 ghz but it is
not shure for every scope it is possible... After the new callibration you
can see if the mod was 100% succesfull ¨failed or passed callibtrtion*..so
think before you start
regards, jac pe1kxh