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 5975-01-080-7455
NSN 6620-00-722-3875
NSN 6220-00-132-6854
NSN 5925-01-316-6274
NSN 5920-01-334-0876
NSN 5999-00-404-5075
NSN 6685-00-139-0897
NSN 5950-00-081-8787
NSN 5925-01-571-7574
NSN 6320-00-433-2773
NSN 5950-01-606-9819
NSN 5998-01-322-8328