                                   NOTICE

   NIST Radio Station WWVB will be conducting a test of a phase-modulated
   broadcast format beginning at 1900 UTC (1:00 PM MDT) Thursday, June 14
   and ending at 1800 UTC (12:00 noon MDT) on Friday, June 29 2012. During
   the test period, the normal WWVB broadcast will be restored for a one
   hour period on weekdays only. Beginning Friday, June 15, and Mondays
   through Fridays thereafter during the test period, the normal WWVB
   broadcast will be restored from 1800 to 1900 UTC (12:00 - 1:00 PM MDT).
   The test will conclude prior to the insertion of a leap second into the
   broadcast on June 30, 2012.
