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 6135-01-294-2131
NSN 5920-01-025-9381
NSN 4140-00-193-0067
NSN 6130-01-082-9945
NSN 5920-01-414-2393
NSN 5965-01-658-4674
NSN 6610-00-032-3536
NSN 5835-00-419-6576
NSN 5930-01-506-4518
NSN 5935-00-042-9085
NSN 6145-01-534-9881
NSN 5985-01-649-1447