Communications and electrical apparatus and instruments in the nature of radio frequency (RF), microwave and millimeter wave components, namely, isolators, circulators, terminations, switches, directional couplers, phase shifters, splitters and combiners, antennas, receivers and transmitters, ferrites, ferrite devices in the nature of isolators and circulators, attenuators, delay line filters and assemblies, antenna line devices, namely, tower mounted amplifiers, couplers, diplexers, triplexers, and mutiplexers
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