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ja2661's avatar
ja2661
Aspirant
Jul 17, 2021

CM1150 modem vs. Comcast vs. Roku

I'm using a CM1150 modem with voice for my Comcast service. Internet connection typically last for about 1/2 a day before it degrades and we have to restart the modem.  it has been online for 14 mont...
FURRYe38's avatar
FURRYe38
Guru - Experienced User
Jul 18, 2021

Have the ISP check the signal and line quality UP to the modem. Be sure the ISP provisions the modem correctly.
Be sure there are no coax cable line splitters in the between the modem and ISP service box. Temporarily remove this and test the modem directly to the supply line from the ISP. 
Be sure your using good quality RG6 coax cable up to the modem. 
https://community.netgear.com/t5/Cable-Modems-Routers/General-info-and-Troubleshooting-for-Cable-Modems/m-p/1530376#M12853

  • ja2661's avatar
    ja2661
    Aspirant
    Jul 18, 2021

    • FURRYe38's avatar
      FURRYe38
      Guru - Experienced User
      Jul 18, 2021

      Please uset the Choose File button on the post to attach pictures. We can't see the pictures until they get approved. Using the Choose File button, we can download them and see them.