[RTTY] 60 meter digital
Kok Chen
chen at mac.com
Sat Feb 25 03:16:35 PST 2012
On Feb 25, 2012, at 1:55 AM, Bill Turner wrote:
> It appears that they are re-defining RTTY to actually be PSK, which is rather bizarre.
Not redefining -- the FCC had always defined all digital modes to be a "radioteletype" emission mode. It is just lawyer-talk. As far as the FCC is concerned, radioteletype is not restricted to binary FSK. The intent is pretty clear from the Report and Order -- PSK31 and Pactor only.
There is one additional "fine print" that folks who want to use 60m for PSK31 will need to pay attention to: even though each 60m channel is as wide as a voice channel and should technically be able to take multiple PSK31 signals, we are only allowed one single PSK31 signal whose carrier is right smack in the center of a channel. The same restriction holds for CW, too. Hey, it makes searching for the QSX of a split DX much easier :-) :-).
73
Chen, W7AY
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