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  1. N

    Antenna and Preamp problems.

    I've tried multiple experiments with a CM4228 and preamp CM7775 and 7777. Basically, dishrich is right - you are more than likely overloading the signal with 28db gain amplifier. The description of your problem is similar to mine - after I installed the preamp the reception was so bad that I...
  2. N

    921 and program guide question

    I currently receive local channels via a CM 4228. Since I get all the local channels I didn't get the local channel package from E*. My signals on all local channels including HD signals is super strong. When I look at the programming guide on 921, it doesn't show me any programming...