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 5998-00-056-9239
NSN 4140-01-536-5527
NSN 5998-01-285-4510
NSN 6685-01-168-3793
NSN 6110-01-378-6194
NSN 5920-01-457-3166
NSN 6650-01-260-1216
NSN 5999-01-291-7771
NSN 7035-00-286-6221
NSN 6620-01-361-8685
NSN 5998-01-361-2661
NSN 4140-01-623-0064