[RFI] Radar Engineers Model 251 Parabolic dimensions?

[Carter, Michael]

Craig,

One aspect of the design that may be
overlooked is the beamwidth of the
ultrasound transducer itself.  Even
with a proper F/D ratio, the transducer
may not fully illuminate the reflector
or instead spill over the edge, both reducing
gain.  The transducer's sensitivity is
another obvious factor.  Getting the perfect
reflector geometry won't mean much if
it's not matched to the transducer beamwidth.

Mike, K8CN