Terk Amplified Indoor AM/FM Antenna PIB Compact, High-performance Am/FM Antenna Gamma Loop Technology Limits Interference Non-conduction Circuitry Isolates Am/FM Antenna For Increased Reception Built-in, Adjustable Amplifier Reception pattern: omnidirectional Non-skid, scratch-proof pedestal FM gain dial AC adapter for FM gain 6-3/16"W x 6-1/4"H x 2-11/16"D