1. DSCC Deep Space CommunicationComplex DSN Deep SpaceNetwork JPL Jet PropulsionLaboratory Ka-band Frequencyband(e.g.31.8-32.3,25.5-27.0, and37.0-38.0GHzfordownlink) MGS Mars GlobalSurveyor MRO Mars ReconnaissanceOrbiter NASA NationalAerospace and AeronauticsAdministration RCSGSO Reducing theCost ofSpacecraftGroundSystems andOperations RF RadioFrequency RMS RootMean Square X-band Frequencyband(e.g.8.4-8.5GHzfordownlink)