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Darknecros's avatar
Darknecros
New Contributor
5 years ago

Daily signal degradations at night

It might sound weird, but since it started getting colder in Las Vegas, NV my internet quality has been dropping to where it is unreliable while gaming.  It is also getting bad enough to where it is causing issues with my Cable TV as well since I have both with Cox.  Besides my internet sometimes getting packet losses, my cable TV is tiling (artifacting) and the sound is sometimes dropping out then coming back as well.  My cable modem signal levels on certain channels are dropping to around 29.23 on the downstream SNR levels on certain bonded channels and I’m getting a lot of correctables as well as uncorrectables as well.  I will add that there are 2 splitters.  One on the outside that splits it so the cable can go to both of my rooms, and the 2nd in the main room which allows for 1 to be connected to my main contour box and the other to my cable modem.  I have tried removing 1 splitter, then the other, so that it would be just the modem, but my SNR levels remain the same.  I have posted the signal levels here.

Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR Corrected Uncorrectables
1 Locked 256QAM 30 957.00 MHz 9.00 dBmV 30.65 dB 124724946 0
2 Locked 256QAM 1 783.00 MHz 10.00 dBmV 29.23 dB 2716468706 167740
3 Locked 256QAM 2 789.00 MHz 9.90 dBmV 29.27 dB 2667473336 143577
4 Locked 256QAM 3 795.00 MHz 9.80 dBmV 29.23 dB 3609053916 413939
5 Locked 256QAM 4 801.00 MHz 10.20 dBmV 29.23 dB 2716977218 136028
6 Locked 256QAM 9 831.00 MHz 9.90 dBmV 29.23 dB 2887325604 175544
7 Locked 256QAM 10 837.00 MHz 10.00 dBmV 29.23 dB 2946369878 237629
8 Locked 256QAM 11 843.00 MHz 9.90 dBmV 29.27 dB 2491383380 149699
9 Locked 256QAM 12 849.00 MHz 10.10 dBmV 29.57 dB 1358746730 16276
10 Locked 256QAM 17 879.00 MHz 9.60 dBmV 30.15 dB 503925025 284
11 Locked 256QAM 18 885.00 MHz 9.20 dBmV 30.15 dB 519421897 286
12 Locked 256QAM 19 891.00 MHz 9.20 dBmV 30.21 dB 478071547 192
13 Locked 256QAM 20 897.00 MHz 9.30 dBmV 30.26 dB 418367821 120
14 Locked 256QAM 21 903.00 MHz 9.10 dBmV 30.37 dB 371489094 66
15 Locked 256QAM 22 909.00 MHz 9.70 dBmV 30.59 dB 287079755 19
16 Locked 256QAM 25 927.00 MHz 9.80 dBmV 30.65 dB 200429251 5
17 Locked 256QAM 26 933.00 MHz 9.60 dBmV 30.65 dB 168049729 4
18 Locked 256QAM 27 939.00 MHz 9.60 dBmV 30.76 dB 151129287 1
19 Locked 256QAM 28 945.00 MHz 9.70 dBmV 30.88 dB 106480632 0
20 Locked 256QAM 29 951.00 MHz 9.40 dBmV 30.82 dB 122858259 2
21 Locked 256QAM 33 357.00 MHz 4.90 dBmV 29.10 dB 854131339 4287
22 Locked 256QAM 34 363.00 MHz 4.90 dBmV 29.27 dB 663254727 1645
23 Locked 256QAM 35 369.00 MHz 5.10 dBmV 29.31 dB 660034179 1488
24 Locked 256QAM 36 375.00 MHz 5.10 dBmV 29.40 dB 554473847 836
25 Locked 256QAM 37 381.00 MHz 5.00 dBmV 29.60 dB 525456127 674
26 Locked 256QAM 38 387.00 MHz 5.50 dBmV 29.70 dB 347759353 198
27 Locked 256QAM 41 405.00 MHz 6.20 dBmV 29.80 dB 262821300 465
28 Locked 256QAM 42 411.00 MHz 6.30 dBmV 29.80 dB 271771701 606
29 Locked 256QAM 43 417.00 MHz 6.70 dBmV 29.80 dB 249868496 154
30 Locked 256QAM 44 423.00 MHz 6.50 dBmV 29.80 dB 259611785 63
31 Locked 256QAM 45 429.00 MHz 6.70 dBmV 29.90 dB 224518337 34
32 Locked 256QAM 46 435.00 MHz 6.70 dBmV 29.90 dB 189357783 11

Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 3 5120 kSym/s 23.50 MHz 53.50 dBmV
2 Locked ATDMA 4 5120 kSym/s 16.90 MHz 52.00 dBmV
3 Locked ATDMA 2 5120 kSym/s 29.90 MHz 52.00 dBmV
4 Locked ATDMA 1 5120 kSym/s 36.30 MHz 52.00 dBmV


Current System Time: Mon Nov 25 22:52:25 2019

  • JonathanJ's avatar
    JonathanJ
    Former Moderator
    5 years ago
    @Darknecros

    Signal levels definitely or out of spec. When running your test are you hardwired to the modem or router? Also when you check the coax connection did you notice an amp?


    Jonathan J
    Cox Moderator

    • Darknecros's avatar
      Darknecros
      New Contributor
      5 years ago

      I use a router, but modem is hardwired to the router and router is hardwired to PC.  I do not notice any amps on the line in any places, just a section on the outside where the grounding wire is, and the filter that is in place due to me having contour service as well.  I will not attempt to remove that since the filter is Cox’s.  In fact I think there is some sort of attenuator on the line because I did try to remove that when troubleshooting along with the splitters, but with that part removed, my SNR levels did not change, but my downstream power levels shot up out of this world to 19 point something which I know would be super DUPER out of spec, so I had to leave that on there.

      • JonathanJ's avatar
        JonathanJ
        Former Moderator
        5 years ago
        @Darknecros

        Sounds like you cover all the basic and some we may need to schedule a technician out. Please email your full-service address and name to cox.help@cox.com so we can check the signal levels from our end and schedule a tech out if needed.



        Jonathan J
        Cox Moderator
  • Darknecros's avatar
    Darknecros
    New Contributor
    5 years ago

    A tech came out a couple days ago, looked at my lines, re crimped them, added a filter to the line due to high DPL then took a rather extensive look at the “tap” (the thing that’s in the green box just behind where I live where the cable comes in from). Said there is a problem and put a ticket in.  Next day another tech came out (guessing it was a different person that called in a tech from a different house) and said the same thing, put a ticket in.  About an hour later, a large truck rolled up, then they worked on the thing in the green box (Repair or replace things in there) then afterwords, here are my signal levels now.  This is what they should be:)  no more tiling on my TV and no more slow internet and packet loss:)  thanks:)

    Downstream Bonded Channels
    Channel Lock Status Modulation Channel ID Frequency Power SNR Corrected Uncorrectables
    1 Locked 256QAM 30 957.00 MHz 1.10 dBmV 38.98 dB 0 0
    2 Locked 256QAM 1 783.00 MHz 2.60 dBmV 38.98 dB 0 0
    3 Locked 256QAM 2 789.00 MHz 2.40 dBmV 38.61 dB 0 0
    4 Locked 256QAM 3 795.00 MHz 2.20 dBmV 38.98 dB 0 0
    5 Locked 256QAM 4 801.00 MHz 2.30 dBmV 38.98 dB 0 0
    6 Locked 256QAM 9 831.00 MHz 1.90 dBmV 38.61 dB 0 0
    7 Locked 256QAM 10 837.00 MHz 1.90 dBmV 38.98 dB 0 0
    8 Locked 256QAM 11 843.00 MHz 1.90 dBmV 38.61 dB 0 0
    9 Locked 256QAM 12 849.00 MHz 2.20 dBmV 38.98 dB 0 0
    10 Locked 256QAM 17 879.00 MHz 1.60 dBmV 38.98 dB 0 0
    11 Locked 256QAM 18 885.00 MHz 1.50 dBmV 38.61 dB 9 0
    12 Locked 256QAM 19 891.00 MHz 1.60 dBmV 38.98 dB 7 0
    13 Locked 256QAM 20 897.00 MHz 1.70 dBmV 38.98 dB 8 0
    14 Locked 256QAM 21 903.00 MHz 1.60 dBmV 38.61 dB 10 0
    15 Locked 256QAM 22 909.00 MHz 2.10 dBmV 38.98 dB 0 0
    16 Locked 256QAM 25 927.00 MHz 2.20 dBmV 38.98 dB 11 0
    17 Locked 256QAM 26 933.00 MHz 2.00 dBmV 38.61 dB 14 0
    18 Locked 256QAM 27 939.00 MHz 1.90 dBmV 38.61 dB 12 0
    19 Locked 256QAM 28 945.00 MHz 1.70 dBmV 38.98 dB 6 0
    20 Locked 256QAM 29 951.00 MHz 1.40 dBmV 38.61 dB 0 0
    21 Locked 256QAM 33 357.00 MHz -1.30 dBmV 38.61 dB 0 0
    22 Locked 256QAM 34 363.00 MHz -1.40 dBmV 40.37 dB 0 0
    23 Locked 256QAM 35 369.00 MHz -1.50 dBmV 40.37 dB 5 0
    24 Locked 256QAM 36 375.00 MHz -1.20 dBmV 40.37 dB 0 0
    25 Locked 256QAM 37 381.00 MHz -1.10 dBmV 39.50 dB 0 0
    26 Locked 256QAM 38 387.00 MHz -0.70 dBmV 39.50 dB 0 0
    27 Locked 256QAM 41 405.00 MHz -0.40 dBmV 39.90 dB 0 0
    28 Locked 256QAM 42 411.00 MHz -0.20 dBmV 39.50 dB 0 0
    29 Locked 256QAM 43 417.00 MHz -0.10 dBmV 39.90 dB 0 0
    30 Locked 256QAM 44 423.00 MHz -0.10 dBmV 39.50 dB 0 0
    31 Locked 256QAM 45 429.00 MHz -0.20 dBmV 39.50 dB 0 0
    32 Locked 256QAM 46 435.00 MHz 0.00 dBmV 39.90 dB 0 0

    Upstream Bonded Channels
    Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
    1 Locked ATDMA 3 5120 kSym/s 23.50 MHz 48.50 dBmV
    2 Locked ATDMA 4 5120 kSym/s 16.90 MHz 47.00 dBmV
    3 Locked ATDMA 2 5120 kSym/s 29.90 MHz 48.50 dBmV
    4 Locked ATDMA 1 5120 kSym/s

    36.30 MHz

    		 48.50 dBmV
    • KevinM2's avatar
      KevinM2
      Former Moderator
      5 years ago
      Hi Darknecros, we're glad to learn that the issues have now been resolved. -Kevin M. Cox Support Forum Moderator
      • web45's avatar
        web45
        New Contributor
        5 years ago

        This is exactly what they tech said they were going to do to mine.  I couldn't think of the word "tap".  of course I can't get anyone on the chat to understand that.  they keep resetting my modem and disconnecting me.  I've lost time from work waiting for a technician and I lose more time not having internet.  I have to use my hotspot by verizon just to get through the work day and for the kids to do  homework.  customer service is absolutely horrible.  Trying again to reach a human by phone but I spent over an hour again last night on chat only to be disconnected