Re: Digital SSB..?
Posted by
k6dgw on
May 17, 2007; 12:53am
URL: http://elecraft.85.s1.nabble.com/K3-Panadapter-SoftRock-tp447539p447544.html
Brian Lloyd wrote:
> Yes, we are talking about the same thing. They take the voice and
> digitize it and then put the data stream into multiple PSK carriers that
> fill up the entire voice bandwidth (2.7KHz).
Ever see a digital TV signal on a spectrum analyzer? A UHF FM group I
belong to has a site at Meadow Lakes, CA ... the "Mt. Wilson of Fresno."
On the scope, a DTV signal is a rectangle, 6 Mhz wide, and constant
envelope. I suspect digital voice is pretty much the same only the
rectangle is 2.5Khz wide.
73,
Fred K6DGW
- Northern California Contest Club
- CU in the 2007 CQP Oct 6-7
- www.cqp.org
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