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 6240-01-322-5521
NSN 7035-00-870-0290
NSN 2925-01-471-4912
NSN 5999-01-268-8841
NSN 4140-01-291-3579
NSN 5975-00-234-0852
NSN 5999-01-559-0574
NSN 5945-00-204-9949
NSN 6145-01-612-0736
NSN 5945-01-429-9168
NSN 5930-01-089-8441
NSN 5998-00-792-5318