urn:nasa:pds:context:instrument:pvo.orad 1.0 1.7.0.0 Product_Context 2020-08-26 1.0 extracted metadata from PDS3 catalog and modified to comply with PDS4 Information Model urn:nasa:pds:context:instrument_host:spacecraft.pvo::1.0 instrument_to_instrument_host unk reference.unk SURFACE RADAR MAPPER Radio-Radar not applicable not applicable From Pioneer Venus's mission.cat: 'During the nominal mission all but two experiments operated 100 percent successfully. One, the Radar Mapper, produced unusable data for a 32-day period from December 18, 1978 to January 19, 1979. The data lost [were to] be acquired during the extended Orbiter mission. The other, the Infrared Radiometer, failed to operate after February 14, 1979, but had collected an enormous quantity of valuable information prior to that date.' This file was created in 2013 to resolve a database inconsistency.