The PA-18 is a low noise, mast mounted pre-amp sys * Video-antennas * Multi Directional HDTV Antenna * 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