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 5985-01-057-9589
NSN 5985-00-467-1838
NSN 5985-01-584-7649
NSN 6145-00-889-9764
NSN 7035-00-337-8745
NSN 5950-01-619-8592
NSN 6150-01-286-3458
NSN 2925-00-788-0043
NSN 5895-01-490-5346
NSN 5998-01-457-9632
NSN 5945-00-702-4881
NSN 5915-00-465-2321