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 6685-00-480-6538
NSN 5935-01-096-1290
NSN 6685-01-317-0991
NSN 7035-00-849-5526
NSN 5855-01-530-2057
NSN 6220-01-582-8552
NSN 5999-01-422-1676
NSN 5945-01-442-0787
NSN 4140-01-130-2354
NSN 5950-01-175-3341
NSN 6145-01-606-9933
NSN 5920-01-274-1279