TWC sent out a higher level tech who tested all my cables & even replaced a couple more connectors. He showed me the signal levels (which I know doesn't cover all frequencies) and said that's all they would do until I installed a TWC modem. If that failed then they could look further. I had access to another SB6141 so I installed it a couple of days later. With this modem I'm only getting one t4 a day instead of three. Firmware version is the same but the hardware is V7.0 vs. 8.0 in the previous one.
Don't know why the t4 difference but we'll probably just live with it. My son hates it because it interrupts his online gaming. I really don't want to pay for a TWC modem.
copy and paste the latest signal level page...
problem is the old design of 8x4 modems, they only have a 96 mHz acceptance bandwidth and also can't handle ingress on skipped channels.... It should work better with all 8 channels close together. TWC leased modems don't fix everything but force TWC/ spectrum to get the coaxial issues fixed.
Sorry it's been so long since I looked at this. Here's the signal page.
|Frequency||507000000 Hz||513000000 Hz||519000000 Hz||525000000 Hz||531000000 Hz||537000000 Hz||543000000 Hz||549000000 Hz|
|Signal to Noise Ratio||37 dB||37 dB||38 dB||38 dB||37 dB||37 dB||36 dB||37 dB|
|Power Level |
|0 dBmV||0 dBmV||0 dBmV||0 dBmV||0 dBmV||0 dBmV||-1 dBmV||-1 dBmV|
|Frequency||37000000 Hz||19400000 Hz||30600000 Hz||24200000 Hz|
|Ranging Service ID||3745||3745||3745||3745|
|Symbol Rate||2.560 Msym/sec||2.560 Msym/sec||5.120 Msym/sec||5.120 Msym/sec|
|Power Level||44 dBmV||43 dBmV||44 dBmV||43 dBmV|
|Upstream Modulation|| QPSK|
|Total Unerrored Codewords||555393451||554559918||554568543||554576729||554550862||554553347||554552383||554554586|
|Total Correctable Codewords||1||1||1||1||17||13||50||14|
|Total Uncorrectable Codewords||482||533||560||554||668||585||578||617|
Just a hunch based on your comment about interference with TV channels carried at 105 and 153 MHz on the cable/DTA: Do you live near a commercial radio broadcasting tower that has any FM stations in the 103 to 108 MHz range? Or near a similar radio tower that is used by a utility company or business? If so, ingress [leakage] interference could be causing the problem with your TV channels, and could also create problems for your internet modem.
Sounds like your latest tech visit was successful. If you are satisfied, you can mark this as "SOLVED" in the pull-down OPTIONS menu on the right side of this window. Stop back again if the problems return.
Had some late night downtime for maintenance about a week ago . Don't know what they did but no T4 errors or modem reboots since then. And the all cable work they did here seems to have solved all the TV issues
Proof that node sweeps are important right there!
Definitely sounds to me like a maintenace OSP (outside plant, street & neighborhood-wide) issue was present and 3rd shift fixed it. In general, maintenance doesn't take services offline unless they have something significant to do (like swapping a LE, an amp, a node, or replacing some damaged hardline).