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 2925-01-113-6904
NSN 5990-00-159-1774
NSN 5960-01-468-5785
NSN 6240-00-318-7162
NSN 5990-00-008-1828
NSN 5998-01-488-3991
NSN 5960-01-081-7745
NSN 6105-00-189-1769
NSN 5935-01-487-6050
NSN 6220-01-621-2263
NSN 6220-00-079-4840
NSN 6105-01-083-9514