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 5835-00-707-6266
NSN 6620-01-483-1138
NSN 5999-01-440-4037
NSN 6320-01-185-3857
NSN 6240-00-948-0119
NSN 5910-00-465-9224
NSN 2925-01-386-7392
NSN 6610-00-091-7347
NSN 5855-01-187-2293
NSN 6105-00-316-5098
NSN 5996-00-810-9486
NSN 5960-01-425-1454