> > Date: Sun, 10 Mar 2013 17:37:13 -0700 > From: gary <[email protected]> > To: [email protected] > Subject: Re: [time-nuts] frequency reference for portable operation > Message-ID: <[email protected]> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > I haven't researched this yet, but the SDR crowd is using GSM and LTE > for tuning their sample clocks. > > > https://github.com/steve-m/kalibrate-rtl > > https://github.com/Evrytania/LTE-Cell-Scanner > > > I have no idea what kind of accuracy you can get from a tower. >
GSM and LTE (and WCDMA and TD-SCDMA for that matter) are spec'd for 50 PPB accuracy. However, these networks are 'often' synchronized to an external reference which would presumably be GPS. This would give better long term accuracy, but the short term accuracy would depend on the actual implementation of the basestation. JP P.S. I'm the author of LTE-Cell-Scanner. _______________________________________________ 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.
