Before revision: The current status of the L2C signal as of June 9, 2021 is: Pre-operational signal with message set "healthy" Broadcasting from 23 GPS satellites (as of January 9, 2021 ) Began launching in 2005 with GPS Block IIR-M Available on 24 GPS satellites with ground segment control capability by 2023 (as of Jan 2020) CM and CL codes The civil-moderate and civil-long ranging codes are generated by a modular LFSR which is reset periodically to a predetermined initial state.
After revision: The current status of the L2C signal as of July 3, 2023 is: Pre-operational signal with message set "healthy" Broadcasting from 25 GPS satellites (as of July 3, 2023 ) Began launching in 2005 with GPS Block IIR-M Available on 24 GPS satellites with ground segment control capability by 2023 (as of Jan 2020) CM and CL codes The civil-moderate and civil-long ranging codes are generated by a modular LFSR which is reset periodically to a predetermined initial state.