John Smith wrote:
Easy, with digital you are simply determining whether a signal is
present--or on (a binary one), on not--and off (a binary zero) ... an
analog signal contains much more data which can "screw up."

OTOH, when the digital signal is neither a one nor a zero,
or the CRC doesn't check, it fails completely while the
analog signal is slowly fading away.

During Hurricane Ike, all the digital signals here failed
while the analog signals were still (noisily) providing
useful information.

I hear digital voice used on HF amateur radio has the
same problem.
--
73, Cecil http://www.w5dxp.com