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 6145-00-155-5297
NSN 5985-01-373-0609
NSN 6685-01-573-8072
NSN 5905-01-462-0057
NSN 6220-01-409-1585
NSN 5835-00-409-8355
NSN 5985-01-010-1758
NSN 6135-00-932-3136
NSN 5930-00-753-2335
NSN 6610-00-777-7494
NSN 2925-01-271-8727
NSN 6150-00-412-1908