6951758's profile

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Mon, Nov 9, 2020 2:00 PM

Inconsistent speed and low SNR

Greetings everyone, I have 600mb plan and a pretty new arris SB6190 I bought this year. I was getting download speeds from 600-700 but now it ranges from 30mb-450mb while conducting the speed test on the xfinity site ending up around 150mb.


Checking the modem status I see that channel 32 has a low SNR of 23-34dB and will drop to "Not Locked" then eventually come back on. I checked direct to the modem outside with a laptop where the coax hits the house from the ground and its the same. Event log has Lost MDD time out and RCS Partial service errors. Ive been reading a ton on this site to try and figure out what the normal specs are and I guess i'm seeing interference on that frequency.


Attached are status results with the modem installed like normal, inside the house. If the tech coming out finds that the line from the pedestal to my house is bad do I need to pay for that?


Downstream Bonded Channels
ChannelLock StatusModulationChannel IDFrequencyPowerSNRCorrectedUncorrectables
1Locked256QAM5483.00 MHz0.50 dBmV38.61 dB00
2Locked256QAM38429.00 MHz1.10 dBmV38.98 dB00
3Locked256QAM39435.00 MHz1.10 dBmV40.37 dB00
4Locked256QAM40441.00 MHz0.80 dBmV38.98 dB00
5Locked256QAM41453.00 MHz0.80 dBmV38.98 dB50
6Locked256QAM1459.00 MHz0.70 dBmV38.98 dB00
7Locked256QAM2465.00 MHz0.50 dBmV38.98 dB00
8Locked256QAM3471.00 MHz0.80 dBmV38.98 dB00
9Locked256QAM4477.00 MHz0.60 dBmV38.61 dB00
10Locked256QAM6489.00 MHz0.90 dBmV38.98 dB00
11Locked256QAM7495.00 MHz0.60 dBmV38.98 dB00
12Locked256QAM8501.00 MHz0.70 dBmV38.61 dB00
13Locked256QAM9507.00 MHz0.60 dBmV38.61 dB00
14Locked256QAM10513.00 MHz0.60 dBmV38.61 dB00
15Locked256QAM11519.00 MHz0.30 dBmV38.98 dB00
16Locked256QAM12525.00 MHz0.40 dBmV38.98 dB00
17Locked256QAM13531.00 MHz0.20 dBmV38.61 dB00
18Locked256QAM14537.00 MHz0.10 dBmV38.98 dB00
19Locked256QAM15543.00 MHz0.30 dBmV38.61 dB00
20Locked256QAM16549.00 MHz0.30 dBmV38.98 dB00
21Locked256QAM17555.00 MHz0.10 dBmV38.61 dB00
22Locked256QAM18561.00 MHz-0.10 dBmV38.98 dB00
23Locked256QAM19567.00 MHz-0.70 dBmV38.98 dB00
24Locked256QAM20573.00 MHz-1.40 dBmV38.98 dB00
25Locked256QAM21579.00 MHz-1.00 dBmV38.90 dB00
26Locked256QAM22585.00 MHz-1.00 dBmV38.60 dB00
27Locked256QAM23591.00 MHz-0.10 dBmV38.60 dB00
28Locked256QAM24597.00 MHz0.30 dBmV38.90 dB00
29Locked256QAM25603.00 MHz0.60 dBmV38.60 dB00
30Locked256QAM26609.00 MHz0.60 dBmV38.90 dB00
31Locked256QAM27615.00 MHz0.60 dBmV37.60 dB00
32Not Locked----28621.00 MHz----------------

When 32 gets a lock itll look like this. Lowest ive seen is 23dB

32Locked256QAM28621.00 MHz0.40 dBmV34.30 dB43452147898
Upstream Bonded Channels
ChannelLock StatusUS Channel TypeChannel IDSymbol RateFrequencyPower
1LockedATDMA15120 kSym/s35.60 MHz40.50 dBmV
2LockedATDMA45120 kSym/s16.40 MHz41.00 dBmV
3LockedATDMA35120 kSym/s22.80 MHz40.75 dBmV
4LockedATDMA25120 kSym/s29.20 MHz40.75 dBmV


Should I be trying to resolve this or do I need a tech? I used the xfinity chat to get one out but I have to wait 2 weeks from now when Im back from a work trip.




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