Nope never heard about this it makes sense many of the cw signals for the navy and such moved to either msk or psk a long time ago. It would effectively screw up the old receivers like the HP 117, Tracor 599 and several others as frequency references. But I would agree that PSK might indeed allow additional processing gain and hopefully a steady carrier for frequency reference could be regenerated. Regards Paul WB8TSL
On Mon, Mar 28, 2011 at 5:02 PM, beale <[email protected]> wrote: > I thought this was interesting... I don't know if this had been already > mentioned here- probably some list members are already part of the process! > I wonder if this would be a spread-spectrum code like the GPS signal? > > "[...] Another idea being actively investigated is to add phase modulation > to the existing WWVB signal while leaving the AM BCD code intact. This would > allow all existing devices to continue to work, but allow a new generation > of radio-controlled clocks to be developed. These new devices would have > greater processing gain and therefore be capable of reading the time code > with a lower signal-to-noise ratio." > > from "We Help Move Time Through the Air > Managers of WWVB Explore Options to Improve the Service Further" > by John Lowe, manager of NIST radio stations WWV/WWVH/WWVB. > http://tf.boulder.nist.gov/general/pdf/2504.pdf > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
