An item which generates a highly accurate signal of one or more fixed frequencies for calibration of frequencies from other sources. Does not include oscillator (as modified). For devices which are designed as voltage sources, see generator, signal. See also frequency meter.
Classification: Parts and accessories of articles of schedule b subheading 9030.39
NSN 6610-01-425-1523
NSN 6240-01-476-5776
NSN 4140-01-175-3883
NSN 5975-00-447-1053
NSN 5915-01-229-2926
NSN 6685-01-359-9166
NSN 6645-00-192-1152
NSN 4140-01-459-2575
NSN 5975-00-152-2591
NSN 5925-00-975-7105
NSN 5990-01-087-6466
NSN 5990-01-620-8768