OT: HP 420C Coaxial Crystal Detector: Info wanted

martin_u_fischer <Martin.Fischer@...>

Hello Tektronics Community,

would anybody know the difference between the HP Model 420C and the
Models 420A/B Crystal Detector?
I have an Operating Note here for the Models 420A/B, but nothing can be
found about the Model 420C.

The Agilent website states: "This product is no longer sold by
Agilent." and "Manuals: None available for this product"...

Any hint will be highly appreciated.



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