Part Number: 0759-3900 (Frequency standard)Part Number: 2548615-4 (Frequency standard)Part Number: 6025-1006 (Frequency standard)Part Number: 6090699-01 (Frequency standard)Part Number: 6625-00-078-4718 (Frequency standard)Part Number: 777-4308-001 (Frequency standard)Part Number: 7LIB615-9 (Frequency standard)Part Number: C09-0699-001 (Frequency standard)Part Number: MRT-HT (Frequency standard)Part Number: TC939 (Frequency standard)