On 2011-09-07, Chris Albertson <albertson.chris at gmail.com> wrote: > The most notable > difference is the one sigma error on the time of the PPS. The newest > Oncore units (sold new by Synergy) are at the 2nS level while Garmin > claims 1uS. I'm not even sure the USNO provided time sync to GPS is at the 2nS level.