GPS Satellite PRN 32 in GPS Posted June 22, 2007 NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2007051 NANU TYPE: GENERAL *** GENERAL MESSAGE TO ALL GPS USERS *** ON 2 APR 2007, SVN23 WILL RESUME TRANSMITTING L-BAND UTILIZING PRN32. ... ANYONE EXPERIENCING PROBLEMS WITH PRN32 SHOULD CONTACT THE APPROPRIATE AGENCY LISTED BELOW.... POC: CIVILIAN: NAVCEN AT COMM 703-313-5900, When GPS receivers were first being built, some manufacturers numbered them from 0 to 31. Others numbered them from 1 to 32. This is the reason for the "anyone experiencing problems with PRN32" comment. They want to know if this is still an issue. I just completed a study for GPS Wing on what it would take to update the GPS Signal Specification ICD-GPS-200D to handle more than 32 satellites in the constellation.