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 5920-01-445-3521
NSN 6135-00-269-5843
NSN 6135-01-643-7496
NSN 7035-01-364-0286
NSN 5998-00-257-2979
NSN 5925-00-319-4212
NSN 5960-00-948-6012
NSN 5855-00-400-2622
NSN 5950-00-636-3063
NSN 6650-01-355-1271
NSN 5930-01-193-8862
NSN 2925-01-298-2674