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 6645-01-578-5075
NSN 6150-01-097-3039
NSN 5945-01-433-0804
NSN 5910-00-079-9074
NSN 6240-00-761-2244
NSN 7035-00-286-6221
NSN 5925-00-419-1950
NSN 5925-01-599-3858
NSN 5950-01-071-7430
NSN 6110-01-267-3854
NSN 5965-01-172-5724
NSN 6620-01-448-1423