What Is the Maximum cable length of the coax cable used to connect the Amplify preamp to its Power inserter. (CM7777HD)?

Connect the coax cable to the CM-7777HD/Amplify "Out To TV" port, and the other end of that cable to the power inserter "To Amp" port. We recommend that this cable be no longer than ~100ft. 

We know that some people have used longer cables, but it is not recommended. 

Please see the attached diagrams below to confirm proper connections. 

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