President Nixon approved the development of the Space Shuttle. The guidance and navigation systems developed for Apollo were adequate enough for the Space Shuttle, but could not serve the data rate and coverage requirements forecasted for the Shuttle. The network communications system had to accommodate the consolidated Spaceflight Tracking and Data Network (STDN), the Air Force Space Ground Link System (SGLS), and the upcoming Tracking and Data Relay Satellite (TDRS). The STDN and SGLS operated at the S-band frequencies, but TDRS would operate on S- and Ku- bands that required more stringent link requirements. Therefore, new S-band hardware was developed to communicate with all three networks, accommodate the downlink of wide band of telemetry from the engines, dump data from the recorders, and broadcast the video from the television system. Additionally, a much wider bandwidth Ku band system was developed to broadcast very high rate data (50 Mbps) and television thru the new TDRS system.