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 7035-01-160-4423
NSN 5935-01-241-6988
NSN 5835-00-405-4560
NSN 2925-00-833-9466
NSN 5920-01-586-5328
NSN 5965-01-350-5105
NSN 6105-00-669-6462
NSN 6620-01-106-6510
NSN 5999-00-837-7615
NSN 4140-00-439-4100
NSN 6130-01-112-0158
NSN 7035-01-168-3596