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 5996-01-398-2147
NSN 5905-01-351-7918
NSN 5855-01-122-9418
NSN 5990-01-189-3201
NSN 5895-00-099-9532
NSN 5975-01-142-2976
NSN 5960-00-135-6143
NSN 6145-01-568-9199
NSN 6320-01-345-5818
NSN 5855-01-372-4433
NSN 6220-00-712-1779
NSN 6685-01-103-3143