Visitor
•
1 Message
Imtermittant pixelation on channels riding 147 Mhz and 153 Mhz carriers (e.g. 738, 683, 680, 764, 681, 677)
have recently moved my service from Golden CO where it worked fine to Evergreen CO where I know have a problem. I have one X1 box and a SiliconDust HD HomeRun Prime cable card tuner. Both experience Imtermittant pixelation on channels riding 147 Mhz and 153 Mhz carriers (e.g. 738, 683, 680, 764, 681, 677). The signal strength of these channels varies from -5.5 dBmV to -4.3 dBmV, the S/N ranges from 37.6 dB to 35.1 dB. I have an active splitter serving the X1 and HDHR Prime receivers as well as a cable modem. My internet download speed is about 65 mb/s. I suspect there might be an equalization issue on trunk line (or drop).
Please Advise
Mark
XfinityRay
Official Employee
•
3.9K Messages
2 hours ago
Hi @user_gap64a! Thanks for reaching out—and for the detailed info, that’s super helpful. I’m sorry to hear you’re experiencing pixelation after your move. Based on what you’ve described, you’ve already done some great troubleshooting, and your suspicion about a signal consistency issue (possibly equalization on the line) is definitely a reasonable one.
A few things I see:
-Your signal levels (-5.5 to -4.3 dBmV) and SNR (35–37 dB) are generally within acceptable ranges, but the fact that the issue is isolated to specific frequency ranges (147 MHz and 153 MHz carriers) suggests there could be localized noise or tilt affecting those channels.
-Since both the X1 box and HDHomeRun are impacted, that points away from equipment-specific issues and more toward the signal coming into the home.
To help narrow this down further, I’d recommend trying a couple quick checks:
-If possible, temporarily bypass the active splitter and connect one device directly to the primary line. This can help rule out the splitter as a contributing factor.
-Check all coax connections (wall plate, splitter inputs/outputs, device connections) to ensure they’re tight and corrosion-free.
- If there are any unused splitter ports, make sure they’re properly terminated.
Given the frequency-specific nature of the issue and that it started after the move to Evergreen, it’s very possible there’s a plant or drop-related factor (like line equalization, ingress, or even environmental differences affecting the signal path). If none of those steps fix the problem, please send us a direct message with your full name and complete service address to “Xfinity Support”. To do so, click on the direct messaging icon located at the top right of this forums page.
Here's the detailed steps to direct message us:
• Click "Sign In" if necessary
• Click the "Direct Message” icon (upper right corner of this page)
• Click the "New message" (pencil and paper) icon
• Type "Xfinity Support" in the to line and select "Xfinity Support" from the drop-down list
• Type your message in the text area near the bottom of the window
• Press Enter to send your message
0
0