On Tue, Feb 21, 2012 at 3:13 PM, Jones Beene <[email protected]> wrote: > -----Original Message----- > From: Alan J Fletcher > >> Jef Poskanzer pointed out a few years ago that spread-spectrum > encrypted radio traffic would be indistinguishable from white noise. > > Isn't there always a preset packet size? That alone would provide regular > gaps in the rate of transmission, it would seem.
Well, there *is* a limited bandwidth; so, SSC signals stand above the surrounding noise floor like Ayer's rock. Once you notice that there is a signal there, then you begin to analyze the noise and find out that it is not real noise. Thar be intelligence there! The CDMA cell phone signals I referenced previously are not unlike spread spectrum communications. T
