IC 009. US 021 023 026 036 038. G & S: Radio frequency and microwave connectors of electronic circuits; cable assemblies in the nature of electric cables, wires, conductors and connection fittings therefor; power dividers in the nature of electrical power distribution units; electric cables and cable connectors; directional cable connector couplers, cable attenuators, radio frequency terminations comprised of electrical resistors for terminating radio frequency signal; radio frequency adaptors in the nature of cable adaptors for use with radio frequencies; radio frequency amplifiers in the nature of cable amplifiers for use with radio frequencies; bias tees in the nature of passive coaxial cables primarily for injecting D.C. currents or voltages into radio frequency circuits for powering radio frequency circuits; cable connectors in the nature of breakouts and circulators; cable D.C. blocks, namely, electrical terminators of D.C. voltage; electronic apparatus, namely, radio frequency detectors in the nature of active coaxial cables for monitoring and measuring signal strength from a radio frequency source and converting radio frequency signal strength into proportional D.C. voltage at its source; cable frequency amplifiers, cable frequency doublers in the nature of an amplifier; electric cable fuse holders for holding radio frequency connectors; cable isolators in the nature of passive 2-port microwave cables and cable connectors for protecting radio frequency components from excessive current or signal reflection; cable limiters in the nature of broadband passive devices for receiver and radio frequency component protection by input power leveling and power limiting; matching pads, namely, resistive impedance transformers or minimum loss pads that are passive coaxial components for impedance matching between 50 Ohm and 75 Ohm systems; cable mixers, cable double balanced mixers, and cable frequency mixers, namely, passive microwave circuits for creating a output frequency from two input frequencies; cable radio frequency noise generators for supplying radio-frequency energy, cable phase trimmers and shifters, namely, adjustable passive microwave cable connectors designed for radio frequency applications for matching two cables and adjusting the phase thereof without degrading signal quality; single wire electric cables for patch panels, and standard gain horns in the nature of frequency converters for directing radio waves at a precise frequency