9 Radio frequency microwave and millimeter wave systems, parts and accessories, namely, amplifiers, baluns, electric couplings, circulators in the nature of electronic components, electricity limiters, surge protectors, antennas, 60 GHZ systems and modules comprised of tripod, circuit board, power adapter, RF receiver, USB hardware controller, electrical cables and operating software, Ohm impedance matching pads, high-speed biased detectors, radio and microwave frequency limiters to protect components from stray signals, bandpass filters for use in microwave waveguides, isolators and circulators, noise source modules, oscillators, frequency synthesizers, bias tees, dc blocks, cable assemblies, frequency multipliers and dividers, electro-magnetic power dividers and combiners, waveguide rotary joints, electrical phase shifters and trimmers, coaxial test cables; calibration kits to measure and standardize RF signals comprised of a network analyzer, operating software, data access ports, electrical terminators, and coaxial cables