Look up your location at www.antennaweb.org. If you have any TV station transmitters within ~60 miles, we recommend the Titan 2 Medium Gain Preamplifier (CM7778). If you do not have any TV station transmitters within ~60 miles, we recommend the Titan 2 High Gain Preamplifier (CM7777).
We do have another State of The Art preamp. Amplify CM-7777HD.
Selectable gain, 17dB/30dB.
Built in LTE/Cellular filter.
Built in FM filter.
Please see the attached diagrams for sample 'correct' antenna system connections.