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 5945-00-837-5583
NSN 6620-00-078-1040
NSN 5985-01-054-6697
NSN 5895-01-460-3915
NSN 5935-00-722-5546
NSN 5910-00-504-8546
NSN 5990-00-539-7859
NSN 6130-01-123-9041
NSN 5915-01-155-4655
NSN 4140-01-388-2007
NSN 5935-00-815-1617
NSN 6610-01-341-6041