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 6220-01-472-2998
NSN 5915-01-205-2933
NSN 6240-01-463-8276
NSN 5895-00-564-2892
NSN 5996-00-673-8282
NSN 5935-01-277-3039
NSN 5945-01-202-9263
NSN 6105-01-627-4227
NSN 5945-01-237-2592
NSN 4140-01-519-9343
NSN 2925-00-338-4667
NSN 6645-01-408-6568