wrote:

What aircraft would use that setup Rick? I can't imagine how you
could drive a prop directly from a turbine engine with no
reduction gearing? (or did I misread you?)

I think you misread. A turboshaft engine can be used for
anything but driving a propeller directly. They are used to
power everything from generators and air compressors to
ships and water pumps. Some of them, like the GE LM2500
drive the output shaft directly from the power turbine at
3600 rpm so they can be direct coupled to a generator. They
do not use a gearbox.

Rick