Alan Bloom wrote:
It might be possible to use separate Nyquist filters and detectors for
the two tones, treating each one as if it were a separate on/off-keyed
signal. If the transmitted signal is not filtered too heavily (i.e.
jumps quickly from one tone to the other) it seems like that should
work.
My impression was that that was the expected way of handling RTTY signals.
Transmitter circuits from 1968 simply switched between two oscillators
to key the signal; they didn't try to make a smooth transition in the
frequency domain.
--
David Woolley
Emails are not formal business letters, whatever businesses may want.
RFC1855 says there should be an address here, but, in a world of spam,
that is no longer good advice, as archive address hiding may not work.
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