Visitor
•
3 Messages
Downstream power levels in spec?
Hello! I have been having random internet fluctuations that don't resolve until I restart my gateway. Now that I, as well as my roommates all, work from home this has become a problem.
When the internet becomes an issue the levels are around 10.5dBmV although sometimes they hit around 10.9dBmV. That is the highest I have seen on my status page.
I am using an official gateway from Xfinity. Model: CGM4981COM from Technicolor
|
Downstream
|
Channel Bonding Value | |||||||||||||||||||||||||||||||
| Index |
20
|
17
|
18
|
19
|
21
|
22
|
23
|
24
|
25
|
26
|
27
|
28
|
29
|
30
|
31
|
32
|
33
|
34
|
35
|
36
|
37
|
38
|
39
|
40
|
41
|
42
|
43
|
44
|
45
|
46
|
47
|
48
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lock Status |
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
Locked
|
| Frequency |
501 MHz
|
483 MHz
|
489 MHz
|
495 MHz
|
507 MHz
|
513 MHz
|
519 MHz
|
525 MHz
|
531 MHz
|
543 MHz
|
555 MHz
|
561 MHz
|
567 MHz
|
573 MHz
|
579 MHz
|
585 MHz
|
591 MHz
|
597 MHz
|
603 MHz
|
609 MHz
|
615 MHz
|
621 MHz
|
627 MHz
|
633 MHz
|
639 MHz
|
645 MHz
|
651 MHz
|
657 MHz
|
663 MHz
|
669 MHz
|
675 MHz
|
722000000
|
| SNR |
41.2 dB
|
41.1 dB
|
40.8 dB
|
41.0 dB
|
41.1 dB
|
41.0 dB
|
41.0 dB
|
40.7 dB
|
40.5 dB
|
40.5 dB
|
40.5 dB
|
40.8 dB
|
40.7 dB
|
40.8 dB
|
40.8 dB
|
40.9 dB
|
40.6 dB
|
40.4 dB
|
40.5 dB
|
40.5 dB
|
40.5 dB
|
40.3 dB
|
40.0 dB
|
40.4 dB
|
40.4 dB
|
40.4 dB
|
40.2 dB
|
40.1 dB
|
40.2 dB
|
40.0 dB
|
40.0 dB
|
39.5 dB
|
| Power Level |
10.5 dBmV
|
10.1 dBmV
|
9.9 dBmV
|
10.1 dBmV
|
10.7 dBmV
|
10.3 dBmV
|
9.9 dBmV
|
9.5 dBmV
|
9.4 dBmV
|
9.9 dBmV
|
9.9 dBmV
|
9.9 dBmV
|
10.0 dBmV
|
10.1 dBmV
|
10.0 dBmV
|
9.9 dBmV
|
9.7 dBmV
|
9.6 dBmV
|
9.7 dBmV
|
9.7 dBmV
|
9.6 dBmV
|
9.6 dBmV
|
9.3 dBmV
|
9.2 dBmV
|
9.3 dBmV
|
9.5 dBmV
|
9.2 dBmV
|
9.0 dBmV
|
9.0 dBmV
|
8.9 dBmV
|
9.1 dBmV
|
9.5 dBmV
|
| Modulation |
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
256 QAM
|
OFDM
|
|
Upstream
|
Channel Bonding Value | ||||
| Index |
1
|
2
|
3
|
4
|
|
|---|---|---|---|---|---|
| Lock Status |
Locked
|
Locked
|
Locked
|
Locked
|
|
| Frequency |
16 MHz
|
22 MHz
|
29 MHz
|
35 MHz
|
|
| Symbol Rate |
5120
|
5120
|
5120
|
5120
|
|
| Power Level |
37.5 dBmV
|
38.3 dBmV
|
38.5 dBmV
|
38.5 dBmV
|
|
| Modulation |
QAM
|
QAM
|
QAM
|
QAM
|
|
| Channel Type |
ATDMA
|
ATDMA
|
ATDMA
|
ATDMA
|
|
CCStephanieK
Problem Solver
•
909 Messages
3 years ago
Hello, @CJIsHere. Thank you for sharing your signal reports with us. I would love to look into what's causing the fluctuation on your reports further. I do see currently the downstream signals are out of spec when running the reports on my end. Do you notice any damage to the coax line within your home? Have you had the opportunity to unscrew/screw the coax line at the wall outlet and on the back of the modem? Does the line have a splitter installed anywhere?
1
0
CCStephanieK
Problem Solver
•
909 Messages
3 years ago
There's a chance the coax line or the connectors at the wall panel are bad. I do recommend seeing if replacing the coax line inside your home helps improve the connection or other adjustments to your set up (we offer replacement coax at our Xfinity stores free of charge). I'm not entirely sure about the installation of the panel, but it's definitely worth a shot to see if it's separated. Sometimes the lines run directly to the plate and there might not be an option to screw on another at entry. If not, we can also look into setting up an appointment to have a tech inspect the signals on site. Any wiring inside the home would not be Comcast's responsibility, and there may be a charge associated if the issues are originating from inside. If the issues are caused from outside wiring or our modem/gateway/equipment, there wouldn't be a charge. Please keep me posted if you discover anything with the line!
1
0