News courtesy of CANSPACE Listserv.
According to tracking data from stations of the International GNSS Service’s Multi-GNSS Experiment, the second Russian Luch satellite, Luch-5B, started transmitting GLONASS and GPS differential corrections on January 17, 2013, at around 11:07 UTC.
Luch-5B, launched on November 2, 2012, carries a transponder for the System for Differential Correction and Monitoring satellite-based augmentation system. The satellite, occupying an orbital slot at 16 degrees west, uses PRN code 125. Transmission tests are not continuous.