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 5975-01-116-4472
NSN 5975-01-088-7470
NSN 5915-01-073-9274
NSN 6130-01-501-4463
NSN 6105-01-065-0341
NSN 5855-01-523-8926
NSN 6135-01-213-7339
NSN 6240-00-560-5426
NSN 5996-01-350-4139
NSN 5935-00-800-8440
NSN 6620-01-326-8944
NSN 4140-01-370-1309