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 5996-01-310-7433
NSN 5990-01-465-9235
NSN 6110-01-400-4207
NSN 6130-00-127-0685
NSN 5855-01-131-5166
NSN 5975-01-571-7912
NSN 5945-00-387-3146
NSN 5855-00-185-1560
NSN 6620-01-633-8443
NSN 5999-01-219-6591
NSN 6650-01-296-0004
NSN 5998-00-647-1225