Labels:text | sketch | drawing | circle | diagram | black and white OCR: 14 UHF communication to MCC is through a UHF ground site and Goddard Space Flight Center (GSFC) : DOWNLINK : CARRIES VOICE ( ONLY) FROM THE ORBITER TO SIMPLEX mcc. 259. 7 MH2 FOR DOWNLINK IN THE SIMPLEX .. MODE, THE ORBITER TRANSMITS UHF BUT CANNOT RECEIVE DURING TRANSMISSION. . THE RECEIVER VOICE IS TEMPORARILY INHIBITTED. G SF LIHF GSTDN SITE MCC