Which preamplifier do I need? CM7777 CM7778 CM7777HD

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.

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