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KU-BAND BRIEFING (FENDELL) TDRS - S-BAND (85% COVERAGE) NO TRACKING THROUGH KU_BAND UPLINK IS EITHER S_BAND or KU_BAND (pwr) UPLINK KU_band: 2 VOICE 1 CMD option for text & graphics return link 2 VOICE 1 T/M (can get PL through "bent-pipe") SPA3-01: s-band comm only Ku-band PL opo[[?]] (not planning to fly teleprinter once text/graphics works) Ku-band contstraints: EMI on P/L (main - beam 240 V/m) - a[[?]]t program will trip-off Ku-band when 67 v/m would hit PL. Separation not a problem (beam drops off to ~ 4 v/m at 100 m) planning groundrules: 1st 24 hrs, no KU-band? KU & S-band together => pwr problem (>~ 2 RW) Ku system is primarily single string