hfeinstein at cox.net
Fri Dec 3 08:24:34 CST 2004
I know that radio astronomers often supercool some of their receiving
equipment to lower the
noise and thereby improve its sensitivity. As a thought experiment,
would it be practical for a ham
to supercool parts of the receiving chain of a system that was built to
receive a very weak signal?
I'm thinking that the equipment, for example a low noise converter,
could be placed into some kind of protective jacket and emersed in some
supercool O2 or CO2 (dry ice). First, does it make sense from a radio
engineering/physics point fo view? Second, is their a practical way to
do this without elabroate equipment. Third, anyone in the amateur
community tried this?
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