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 6110-01-394-6535
NSN 6145-00-705-6686
NSN 6645-01-018-7664
NSN 6610-01-640-7996
NSN 7035-01-545-3212
NSN 6220-00-166-9795
NSN 6645-01-440-5500
NSN 5930-01-339-6660
NSN 5915-01-156-8977
NSN 5996-01-160-5588
NSN 5945-01-419-4338
NSN 6130-01-296-1897