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 5835-01-085-5487
NSN 5910-01-319-1197
NSN 5975-00-657-1544
NSN 5999-01-195-4031
NSN 5999-01-387-6698
NSN 6685-01-424-3237
NSN 6110-01-036-0794
NSN 2925-00-441-8252
NSN 5960-01-411-5217
NSN 5960-01-285-8484
NSN 5930-01-430-2309
NSN 5975-01-388-4264