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 (CM-7778v3). If you do not have any TV station transmitters within ~60 miles, we recommend the Titan 2 High Gain Preamplifier (CM-7777v3).
Amplify Adjustable Gain Preamplifier (CM-7777HD) features a selectable gain setting of either 17dB/30dB, built in LTE/Cellular filter, and built in FM filter.
Amplify+ Adjustable Gain Preamplifier for Professionals (CM-7778HD)features a selectable gain setting of either 17dB/30dB, built in LTE/Cellular filter, built in FM trap and separate UHF and VHF inputs for two-antenna, band-specific installations.