On Aug 3, 2011, at 3:58 PM, Tom Osborne wrote:
> Makes me wonder, when did 'digital' start??
The term "digital signal processing" came into common use probably a little
after 1970. Before that, we were just doing "signal processing," even when
we'd used numerical methods.
> Don't think many of the RTTY countries I got back in the 60's and 70's were
> on PSK, (or any other 'digital' mode).
The relative rarity between RTTY and the other keyboard modes can be funny at
times. Before the mid 1980s, Peter TY1PS used to operate in even the minor
RTTY contests. Working TY1PS on RTTY was no harder than working HH1PK
(remember Patrick with his really, really short exchanges?).
Sometime after that, Peter switched to using Pactor and TY became rarer and
rarer on RTTY until pretty much the TY5A DXpedition (which was done in TY1PS's
shack and car, from information printed on their QSL card :-).
Skip to more recent times (2004), I still remember all the hand wringing on
this reflector when T33C waited more than 24 hours before appearing on RTTY.
They appeared first on PSK31, and that was how I got my first T33 digital mode
contact. A day later, when they appeared on RTTY, I worked them for a second
digital mode contact. Had I not worked them on RTTY, that PSK31 contact could
have been all important. My VP2M was also done on PSK31 first and RTTY later.
73
Chen, W7AY
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