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 5855-01-604-9997
NSN 5996-01-400-3558
NSN 5996-01-143-5779
NSN 6240-00-723-3378
NSN 6650-01-467-2355
NSN 5990-00-153-0055
NSN 4140-01-426-8428
NSN 5945-01-281-5002
NSN 5975-01-487-4379
NSN 6110-01-381-1269
NSN 5945-00-553-9963
NSN 5925-01-140-2773