Re: [Equipment] looking to buy rcn supported cable modem
DOCSIS 2 looks at 1 downstream channel whereas DOCSIS 3 looks at multiple channels. I would try your new modem where you get the 7 forward. Your other room has excessive signal loss. Also try bypassing any splitters.
I understand what you're saying but I can't get a lock even in the room with the forward power being 7 dBmV. I don't think I can do much more than what I've done already. -- "Look at me, I'm Dr. Zoidberg, homeowner."