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 6685-01-180-0261
NSN 6135-01-168-2944
NSN 5910-01-100-1161
NSN 6620-01-431-9176
NSN 6685-01-615-9485
NSN 5925-00-988-8847
NSN 5990-00-727-0723
NSN 5935-00-661-0825
NSN 6110-01-104-8770
NSN 4140-00-830-9515
NSN 5895-00-418-2221
NSN 5965-01-652-5859