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 5930-01-345-0556
NSN 6110-01-322-4659
NSN 6240-00-082-1142
NSN 5910-01-279-2948
NSN 5895-01-219-5183
NSN 5920-00-285-0754
NSN 5945-01-359-6337
NSN 5945-01-232-0842
NSN 5990-01-460-6390
NSN 6320-01-422-1212
NSN 5998-00-908-1684
NSN 6685-01-477-2349