Going first to 51.5 West for in-orbit testing.
"On October 11, 2012, the Satellite Division granted, with conditions, special temporary authority to Intelsat License LLC, for a period of 30 days, to continue to conduct in-orbit testing of the Intelsat 23 space station at the 51.5° W.L. orbital location in the 3700 - 4200 MHz (space-to-Earth), 5925 - 6425 MHz (Earth-to-space), 11.45 - 11.70 GHz (space-to-Earth), 11.7 - 12.2 GHz (space-to-Earth), and 14.0 - 14.5 GHz (Earth-to-space) frequency bands.
Additionally, Intelsat is granted authority to conduct telemetry, tracking, and command operations necessary to maintain Intelsat 23 at 51.5° W.L. and to drift Intelsat 23 from 51.5° W.L. to its authorized location at 53.0° W.L. using center frequencies of 6173.7 MHz and 6176.3 MHz (Earth-to-space) and 3947.5/3948 MHz or 3952/3952.5 MHz (space-to-Earth)."
_http://licensing.fcc.gov/ibfsweb/ib.page.FetchPN?report_key=970853