Option h31 consists of - opt001 high performance cesium beam tube, opt913 rack flange kit, rs-232-c default baud rate 9600, 2 person lift label
An item that can generate a fundamental frequency with a high degree of accuracy. Harmonics of this fundamental are then used as a reference point for checking throughout the radio spectrum. The standard may be stable crystal oscillator, noncrystal oscillator, tuning fork, atomic beam, molecular beam, gas cell, quantum mechanical resonator, or the like.
Classification: Parts and accessories of articles of schedule b subheading 9030.39
NSN 5999-01-088-4123
NSN 5905-00-610-5698
NSN 5999-01-399-0271
NSN 5905-01-398-1231
NSN 5835-00-905-7165
NSN 5985-00-944-9805
NSN 5915-00-215-0492
NSN 6150-01-258-4036
NSN 6220-00-755-7546
NSN 2925-01-511-2667
NSN 5996-01-602-6953
NSN 6135-01-562-6582