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 6620-01-461-3550
NSN 6220-01-653-1432
NSN 5905-00-518-5782
NSN 6220-00-108-8598
NSN 6685-01-453-0460
NSN 5855-00-361-0167
NSN 2925-01-509-3783
NSN 6110-00-228-2584
NSN 5965-01-028-2587
NSN 6610-01-125-0776
NSN 5990-01-544-0364
NSN 5855-01-566-6869