Model Number: X-Set

Manufactured: 1974-1975

Period of Use: During GPS Phase 1 Validation Phase

Description:
Part of early GPS user equipment development. 19 X-Sets were built and fielded. Weighed approximately 700 lbs. Dissipated over 700 watts. Used for military GPS testing and demonstrations. 4 Satellite/Pseudolite continuously tracking receiver. Digital design with software signal processing. Data Processor based on HP 2100 Minicomputer. 64,000 words (17-bit) of memory. Navigation solution updated at 10Hz.

Item History:
Could track satellites under high jamming conditions. Weapons delivery system with 10 ms precision. Used in over 1000 MK82 bomb drop tests.