What do the modem's signal stats look like ? Try getting them here http://192.168.100.1 or here http://10.0.0.1
Please post the *Downstream Power Level*, the *Upstream Power Level*, and the *SNR* (Signal to Noise Ratio) numbers.
What is the exact make and model number of the modem ?
Please also post the downstream channel SNR figures.
The stats are all o/k. Please also post the modem's RF error / event log entries.
Those too, but here's what they look like;
No. Those are the router component's errors of the gateway device. Not helpful. We were looking for the modem component's entries. If you a re using a Comcast supplied gateway device, we've seen recent posts here indicating that with some models, a recent firmware update has made them inaccessible.
Which speed-tier are you subscribed to ? Do you also have their phone service ? Do you want a combo modem / router gateway device or separate components ? The latter is more so recommended.
O/k so you didn't answer if you have their phone service ? That said, If you are not planning to upgrade to gigabit speed I would recommend getting an Arris SB6183. It has a great reputation and is a rock solid performer ! It is a stand-alone cable modem so you will need to use a router with it for multiple network client devices and WiFi.
Here is an excellent site for researching routers;
Good luck !
Quite welcome !