An item for the determination of the electrical wavelength or frequency being generated by an electronic equipment such as a radio transmitter. It may be placed in the radiation field of the equipment, thereby operating on the "absorption" principle, or connected into a transmission line or waveguide run between the equipment and a component such as an antenna, thereby operating on the tuned cavity resonance principle. It includes inscriptions from which the wavelength or frequency can be determined directly, or by reference to an associated calibration curve or tabulation. The wavemeter operates in accordance with its design function only when the equipment under measurement is operating. For items, such as grid dip meters, that determine the same information when the equipment under measurement is not operating, see frequency meter.
Classification: Parts and accessories of articles of schedule b subheading 9030.39
NSN 6240-01-106-2447
NSN 5895-01-431-7349
NSN 5930-00-135-0301
NSN 5905-01-273-4101
NSN 6650-01-119-3058
NSN 5960-01-175-9880
NSN 5998-01-112-0223
NSN 6645-01-452-9495
NSN 6145-00-868-4677
NSN 6135-01-131-7064
NSN 6145-00-557-3604
NSN 5915-01-574-0214