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 6150-00-270-1001
NSN 4140-00-597-5260
NSN 6320-01-515-7913
NSN 5985-01-227-2646
NSN 6240-01-081-4122
NSN 6610-00-407-4295
NSN 6130-01-414-6107
NSN 5950-01-446-5751
NSN 5975-01-085-9021
NSN 5998-01-433-3407
NSN 5996-01-173-5521
NSN 5985-01-171-9868