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Guess your still fixing the internet spectrum?

lotsaofdotlotsaofdot Posts: 4
in Connectivity Dec 29, 2017

Been like this for 2 days only getting 10 mb up most of the time, about 10 mb down

Downstream Bonded Channels
ChannelLock StatusModulationChannel IDFrequencyPowerSNRCorrectedUncorrectables
1Locked256QAM18681.00 MHz4.40 dBmV40.37 dB00
2Not Locked----9627.00 MHz----------------
3Not Locked----10633.00 MHz----------------
4Not Locked----11639.00 MHz----------------
5Not Locked----12645.00 MHz----------------
6Locked256QAM13651.00 MHz-6.80 dBmV34.93 dB1014375
7Locked256QAM14657.00 MHz-0.20 dBmV38.61 dB00
8Locked256QAM15663.00 MHz2.40 dBmV40.37 dB00
9Locked256QAM16669.00 MHz3.50 dBmV40.37 dB00
10Locked256QAM17675.00 MHz4.00 dBmV40.37 dB00
11Locked256QAM19687.00 MHz4.60 dBmV40.37 dB00
12Locked256QAM20693.00 MHz4.90 dBmV40.37 dB00
13Locked256QAM21699.00 MHz5.00 dBmV40.37 dB50
14Locked256QAM22705.00 MHz4.90 dBmV40.95 dB70
15Locked256QAM23711.00 MHz4.60 dBmV40.37 dB00
16Locked256QAM24717.00 MHz4.60 dBmV40.37 dB00
17Locked256QAM25723.00 MHz4.50 dBmV40.95 dB00
18Locked256QAM26729.00 MHz4.30 dBmV40.37 dB70
19Locked256QAM27735.00 MHz4.20 dBmV40.37 dB30
20Locked256QAM28741.00 MHz4.30 dBmV40.95 dB00
21Locked256QAM29747.00 MHz4.10 dBmV40.37 dB00
22Locked256QAM30753.00 MHz4.30 dBmV40.37 dB00
23Locked256QAM31759.00 MHz4.20 dBmV40.95 dB00
24Locked256QAM32765.00 MHz4.20 dBmV40.95 dB00


Upstream Bonded Channels
ChannelLock StatusUS Channel TypeChannel IDSymbol RateFrequencyPower
1LockedATDMA925120 kSym/s37.00 MHz43.00 dBmV
2LockedATDMA915120 kSym/s30.60 MHz42.25 dBmV
3LockedATDMA905120 kSym/s24.20 MHz41.50 dBmV
4LockedTDMA892560 kSym/s19.40 MHz41.00 dBmV

Accepted Answers

  • karlbeckmankarlbeckman Posts: 2,205 ✭✭✭✭
    Dec 30, 2017 Accepted Answer

    Expanding on what MsRaye said, notice that the lowest numbered DS channels assigned are also much lower in level than the rest, and four of them (9 thru 12) can't even be detected by the modem.  DS13 and DS14 are also reading far too low.  This usually indicates either a suddenly failed 'trap' filter or a line amplifier that is grossly misaligned. 

    If Spectrum is actively expanding internet service in your immediate area, they may not have connected program signals to that four channel bank of 9-12 yet.

  • MsRayeMsRaye Posts: 25,606
    Dec 30, 2017 Accepted Answer

    I bet you are internet only and TWC has a trap/ filter on the line that needs to be removed... They added channels that used to be TV ones... lol... Thanks Karl....

    Needs twc/ spectrum out to remove the internet only trap/filter



  • SatchSatch Posts: 3,628 helper
    Dec 29, 2017


    We need your location, city, state, and zip.  Also, a description of the problem.  If it is Internet signal loss, is it happening more at specific times or just randomly?  We had an issue in Wisconsin the day Net Neutrality died, but about three days after that it was fixed.



  • lotsaofdotlotsaofdot Posts: 4
    Dec 29, 2017

    dayton, oh 45415

    Was told there was an outage yesterday. I should be getting 100mb down but that has only happened at about 4 in the morning otherwise I get 10-25mb. Looks from those readings that not every channel is being utilized.

  • MsRayeMsRaye Posts: 25,606
    Dec 29, 2017

    You have a coaxial issue.. Call TWC out


  • guzzidaveguzzidave Posts: 1
    Dec 30, 2017
    Does anyone in the 27302 Mebane area have service? 8am 12/30/17
    Happy New Year!!!!
  • MsRayeMsRaye Posts: 25,606
    Dec 30, 2017

    Call TWC/spectrum for service... If there's a large outage, you'll get a recording


    This is peer to peer support, we have no clue, are customers like you..


  • lotsaofdotlotsaofdot Posts: 4
    Jan 01, 2018

    Now that you mention it, its very possible. I was actually a tech for about 6 monthes before I found my teaching job. Also I dont have a signal meter so I didn't think about it but I tried cutting out some signal to my modem thinking it might be too strong. I was right. Cut out 7db using splitters and was able to get the internet to fire right up and steady to 120mb. I have an r11 service drop to my house because signal at the pole used to be really weak for the area. I'm thinking they increased the power a bit recently. Modems want just the right db.  Thanks for your thoughts guys, helped me figure it out. I am going to call to see about the turned off frequencies and sort that out.

  • MsRayeMsRaye Posts: 25,606
    Jan 01, 2018

    sweet spot is -8 to +8 dBmv ds and adjacent channels should not vary more than 1/2 dB

     s/n must be 34 dB or higher.

    US MUST be below +50 dBmv as +52 is the max modems can put out on 4 US channels

     sweet spot is between +30to + 45 if there's no splitteror attenuator



This discussion has been closed.