343 / | HD | COMMUNICATIONS: RADIO WAVE ANTENNAS |
700 R | DF | ANTENNAS {58} |
793 | DF | .~ Balanced doublet - centerfed (e.g., dipole) {17} |
810 | DF | .~.~ Plural {4} |
812 | .~.~.~ Parallel arrangement {3} | |
813 | DF | .~.~.~.~> Parallel and collinear arrangement |
814 | DF | .~.~.~.~> With coupling network |
815 | DF | .~.~.~.~> With parasitic element (e.g., reflector or director) |