Omnidirectional and directional antenna assembly

Abstract

An antenna assembly providing selectable omnidirectional or directional reception of radio transmissions in a frequency band. The assembly includes an electrically conductive reflector (432) defining a cavity (702) having a bottom (708), an opening (714) and a surface (704 and 706) extending from the bottom to the opening and an electrical output (763) and an electrically conductive loop (431) coupled to ground and having an electrical outlet (766) for coupling to an RF amplifier (407), the loop being positioned between the bottom opening of the cavity.

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