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 5855-01-364-7903
NSN 5985-00-059-8252
NSN 6105-01-357-5040
NSN 5835-01-495-0595
NSN 5960-00-732-0989
NSN 5930-01-446-5841
NSN 5835-00-757-3558
NSN 5905-00-932-4240
NSN 5999-01-123-5460
NSN 5998-01-269-1781
NSN 5925-01-029-3483
NSN 6240-00-400-7980