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 6620-01-391-6499
NSN 6610-01-229-3679
NSN 4140-01-136-9145
NSN 5935-01-542-2647
NSN 5985-00-291-1140
NSN 5996-01-106-6215
NSN 6240-01-371-7475
NSN 5910-01-597-3469
NSN 4140-00-155-8012
NSN 5855-01-437-6161
NSN 6130-01-127-2892
NSN 5930-00-154-7054