TR1 means Payload Furnished Mars Tape Recorder
1 of 2 in
NASA
Similar to TR1
ABC - Audio Bus Coupler
ABCL - As Built Configuration List
ABE - Anomalous Biological Entities
ABHRS - As Built Hardware Reporting System
ABL - Allocated BaseLine
ABOLT - Acquire Bolt
ABS - Anti Burn Shield
View all in NASA