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 6240-01-104-5085
NSN 6240-01-026-0032
NSN 5998-00-759-0911
NSN 5945-00-362-0188
NSN 5930-00-769-1061
NSN 6105-00-205-0655
NSN 5975-01-060-3048
NSN 5999-00-976-2937
NSN 2925-01-236-3547
NSN 5915-01-224-3038
NSN 5965-01-437-8442
NSN 5945-00-367-4106