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 5996-00-023-8705
NSN 6150-01-027-8505
NSN 6240-01-407-0596
NSN 5990-00-152-3929
NSN 5835-01-186-4961
NSN 5960-00-124-0447
NSN 2925-01-032-3814
NSN 5915-00-931-2968
NSN 5990-01-013-8464
NSN 5999-00-392-4074
NSN 5975-00-871-3582
NSN 6645-01-643-7151