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 5990-01-386-5561
NSN 5950-01-075-0208
NSN 5855-00-256-5562
NSN 5998-01-123-4581
NSN 5990-01-492-6575
NSN 6620-00-663-5722
NSN 6320-00-098-2858
NSN 6150-01-290-1755
NSN 5945-01-251-8020
NSN 5996-01-152-2948
NSN 5855-00-879-5849
NSN 5985-00-636-8689