Abstract :
Five notices: (1) Notice of Change in Coding GEOALERTS Broadcast by NBS Radio Stations; (2) Notice of No Change in Offset for 1968; (3) Notice of No Adjustment in the Phase of Time Signals from NBS Radio Stations wwv, WWVL, and WWVH; (4) No Adjustment in the Phase of Seconds Pulses from NBS Radio Station WWVB on January 1, 1968; (5) Monthly Fractional Frequency Offsets and Time Deviations for NBS Radio Stations WWV, WWVH, WWVL and WWVB.
