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 5945-01-145-8932
NSN 6620-01-558-6558
NSN 6620-01-170-8270
NSN 5990-01-645-2592
NSN 6610-01-166-4860
NSN 6620-00-945-7522
NSN 6220-00-621-4240
NSN 5895-00-387-4901
NSN 5855-00-151-3853
NSN 5920-01-514-0031
NSN 2925-00-422-5159
NSN 6145-00-427-7201