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 5998-01-245-2872
NSN 5925-01-127-7608
NSN 5985-01-304-2955
NSN 6145-01-197-2689
NSN 5945-01-463-4210
NSN 6610-01-633-8931
NSN 5895-01-519-8264
NSN 5960-01-516-7264
NSN 5895-01-127-6800
NSN 6620-00-816-9755
NSN 5990-00-613-2279
NSN 6645-01-096-4270