PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM STANDARD_DATA_PRODUCT_ID = HEA DATA_SET_ID = "MEX-M-MRS-1/2/3-PRM-0125-V1.0" PRODUCT_ID = "M00SUE0L1A_HEA_042132120_00.TXT" PRODUCT_CREATION_TIME = 2005-11-02T17:58:01.000 PRODUCER_ID = "SUE" INSTRUMENT_HOST_ID = "MEX" OBJECT = TEXT PUBLICATION_DATE = 2004-08-02 NOTE = "DSN MEX Data Collection: Days 212-213" END_OBJECT = TEXT END Open Loop Data ============== Data Collection --------------- We have completed quick-look processing on the following MEX RSR open loop data at Stanford: DOY DSS RSR BAND RSR CH KSPS BT REC RECS RSR MAX START STOP ID RS LEN FILE NAME SNR --- --- -------- -------- ---- --- -- ---- -- ----- ----- ------------ ----- 212 65 11:43:00 11:58:00 X/XR 4 1 2 16 8260 901 4212114A.RSR -0.7 212 65 11:43:00 11:58:00 X/SR 3 1 2 16 8260 901 4212114B.RSR -1.3 213 15 21:20:00 21:35:00 X/XR 4 1 2 16 8260 901 4213212A.RSR 43.9 213 15 21:20:00 21:35:00 X/SR 3 1 2 16 8260 901 4213212B.RSR 32.9 Anomalies --------- Although there appear to be modulation 'birdies' (interference) drifting through the passband, there is no obvious carrier signal in the X-band data from day 212. The 'birdies' disappear at about 11:55:12 - within a few seconds of the LOS identified by Gene Goltz. There is no signal of any kind visible in the S-band data. My conclusion is that the RSR's were tuned to a frequency NEAR the spacecraft, but not close enough to capture the carrier when it went into occultation. The carrier in the data from day 213 drifts -120 Hz during the course of the observation at X-band and about -30 Hz at S-band.