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 5910-00-658-3409
NSN 6135-01-361-6197
NSN 5905-00-700-5871
NSN 5999-01-121-9531
NSN 6685-00-929-1185
NSN 5905-00-879-1665
NSN 5910-01-251-8156
NSN 6650-01-426-4253
NSN 6610-01-466-3983
NSN 6240-01-152-9015
NSN 6240-00-271-5995
NSN 6110-00-796-4534