[RTTY] Digital Operators Band Plan Committee - Current thoughts and status

[Kai]

Chen,
That's not so. Pactor-IV is not permitted in the USA *only* because its symbol 
rate exceeds 300 baud.
There is currently no  regulatoryBWrestriction  for  non-FSK digital signaling 
in the USA.

The FCC consider Pactor  "documented" since you can purchase a modem. I know, I 
don't like that approach either, but there you go!

I've been accumulating the technical data for Pactor.
Pactor-III (legal in USA) occupies up to 2200 Hz BW; Pactor-IV occupies up to 
2400 Hz BW.
.
73
Kai, KE4PT



On 3/17/2014 8:27 PM, Kok Chen wrote:
> Currently, it is illegal to use Pactor-4 on amateur bands in the US due because of two reasons: 1) it exceeds legal bandwidth, and 2) the codes (convolution codes, encryption, etc) that it use are not publicly documented.
>
> 73
> Chen, W7AY