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 5925-01-302-2720
NSN 5996-00-173-9652
NSN 5855-01-556-0263
NSN 4140-01-214-9798
NSN 4140-00-320-1482
NSN 5965-00-578-8931
NSN 7035-01-423-1755
NSN 6145-01-300-1108
NSN 6220-01-590-7272
NSN 4140-00-608-1736
NSN 5915-01-568-1757
NSN 6110-00-244-3190