On 8/5/02 13:51, Rich Gelber, K2WR at k2wr@njdxa.org wrote:
>Another aspect of both CW and SSB is that a sufficiently skilled operator
>can copy more than one signal at a time. I'm not aware of a "new digital
>mode" that supports this "feature".
Well, RTTY operators have been using 2 or 3 radios for quite some time.
And it isn't a difficult task to process multiple digital signals at one
time. There are PSK31 appliactions that do this today.
In fact, if we get beyond the limitations of a radio "audio channel"
there's no reason a digital radio couldn't decode 15 kHz, 50 kHz or even
an entire band worth of signals similtaneously -- something that would be
difficult or impossible with the human ear.
>Of course if you increased the data rate, and hence the bandwidth, you could
>make the QSO's so fast that it would be indistinguishable from copying more
>than one signal at a time, but the increased bandwidth would leave CW as
>superior again. ;-)
Very nice straw man you've knocked down there.
If anything, digital modes using FSK, PSK or other types of modulation
are easier to decode multiple instances similtaneously than OOK
(on-off-keying) modulations (like CW).
Bill Coleman, AA4LR, PP-ASEL Mail: aa4lr@arrl.net
Quote: "Not within a thousand years will man ever fly!"
-- Wilbur Wright, 1901
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