Studio-transmitter links running at the higher data rate will not be as robust.The method being considered in ATSC Subcommittee T3/S9 Candidate Standard CS-110 encodes sufficient data in the 19.39 Mbps ATSC stream to allow a modified ATSC modulator at each transmitter site produce the same datastream using data encoded in the ATSC transport stream and a time and frequency reference such as GPS.SYN