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 5985-01-524-4512
NSN 5920-01-660-5406
NSN 5965-01-204-8505
NSN 5905-01-196-3153
NSN 5920-01-350-7326
NSN 5950-01-233-1493
NSN 5945-01-495-1494
NSN 6645-01-281-7254
NSN 6135-01-415-1163
NSN 6240-00-965-6066
NSN 5965-01-449-1101
NSN 5950-01-633-8819