Antennas direct, inc PA-18 Ultra Low Noise Pre-Amplifier 18.6 dB VHF / 15.4 dB UHF gain Frequency range 40-862 MHz 1.8 dB noise figure 75 Ohm F connector input / 75 Ohm F connector output All weather design The PA-18 is a low noise, mast mounted pre-amp sys Video-antennas Multi Directional HDTV Antenna