Modem Keeps Dropping Signal

I'm in the SF Bay Area, zip 94070. I swapped out my RCA DCM245, which couldn't handle the new, higher speeds, for a Motorola SB5101 at the Comcast walk-in store. I now have the new speeds, but every hour or so, the modem drops the signal. The online light stays solid, but I'm no longer connected to the internet. I have to power cycle.

Here's my modem stats for the new SB5101: Downstream Frequency 705000000 Hz Signal To Noise Ratio 27.8 dB (RCA was 35.2) Power Level -5.5 dBmV (RCA was -7.5)

Upstream Channel ID 4 Frequency 24800000 Hz Power 34.0 dBmV (RCA was 32)

I've got a truck roll for Saturday morning to check line (that's what Comcast wants to do), but it seems odd that this happened immediately after putting the new SB5101 into service.

I don't understand if this is a coincidence that the S/N dropped, or if the new modem could be the problem.

read more and respond »

Posted 5 years ago by Bruce in Cable Modems

Report misuse

Image for Modem Keeps Dropping Signal