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Forum Discussion
EverymanToo
May 28, 2025Tutor
New CM205V Interferes with TV Signal
When a CM2050V is connected to a three-way coax splitter (the modem, and two TVs to Xfinity Voice/Data/Cable television service, it disrupts the signal to the two tvs. Disconnect it, and the TVs are...
- Jun 06, 2025
Way too many correctable/uncorrectable errors for a 24 hour period of time.
DOCSIS 3.1 is backward compatible with DOCSIS 3.0. I do not think DOCSIS 3.1 is backward compatible with DOCSIS 2.0. If you are looking at DOCSIS 2.0 hardware, you want to check the coax type to ensure it is correct for the current DOCSIS 3.1 connections (RG6).
What were the upload/download throughputs with your new splitters in place?
You might find some ideas in chapter 3 of this reference: https://www.duckware.com/tech/solving-intermittent-cable-modem-issues.html
Kitsap
May 29, 2025Master
Look on the labels and make sure your splitters are capable of passing signals up to 1 GHz. Many older splitters cut off at 850 MHz. If the labels are gone, invest in some new splitters. Buy two with dual output. Connect the line in to one splitter with a connection out to your your modem. The second line out should go to your second splitter with outputs to the TVs.
I do not think there is a CM3050V, should be CM2050V. Are you connected to Xfinity?
- EverymanTooMay 29, 2025Tutor
Typos in title and post. CM2050V. Xfinity, formerly known as Comcast. Splitters work with C7100V. I'll give it a try in the next week, but I have my doubts. Why would the new modem require a new splitter? And why would an old splitter interfere with the cable TV signal only on the new modem??
- KitsapMay 29, 2025Master
Typos in title and post. CM2050V. Xfinity, formerly known as Comcast. Splitters work with C7100V. I'll give it a try in the next week, but I have my doubts. Why would the new modem require a new splitter? And why would an old splitter interfere with the cable TV signal only on the new modem??
Your new modem will connect to the Xfinity Enhanced Speed Network that runs up to 1 GHz. Your old modem would only connect to the Xfinity standard network that peaked at around 850 MHz. Your old splitter is blocking part of the spectrum your new modem is trying to work with and causing problems.
No need to waste $ on new splitters that are capable of going above 1 to 1.1 GHz.
- EverymanTooMay 29, 2025Tutor
Very helpful explanation. Will try it again next week with new splitters. Thanks.
- EverymanTooMay 29, 2025Tutor
How 'bout this one? (on amazon)
GE Digital 2-Way Coaxial Cable Splitter, 2.5 GHz 5-2500 MHz, RG6 Compatible, Works with HD TV, Satellite, High Speed Internet, Amplifier, Antenna, Gold Plated Connectors, Corrosion Resistant, 33526
- FURRYe38May 29, 2025Guru - Experienced User
Please post a copy and paste of the modems connection status log page.
Which ISP are you connected with?
- EverymanTooMay 29, 2025Tutor
Current splitter up to 900 mhz