Not so Gigablast - Wichita, KS

Gigablast smigablast………  Let’s go with no blast!

I used to have Ultimate up until about a year ago, but my speed dropped to barely over 100MB and my TV pixelated to the point you couldn’t even watch TV.  So, I went to the cox store with all my TV boxes to cancel my TV and downgrade my Internet to 100MB because no sense paying for 300MB when you couldn’t get it.  After I completed my transaction at the solutions store and was leaving, the CSR finally asked why I was cancelling and downgrading my service (great timing).  So, I told him and he really didn’t care at that point either.

Jump forward a year, give or take, and they announce Gigablast everywhere.  OK, I’ll bite.  I ordered a D3.1 modem (SB8200).  Did a speed test, horrible results.  So, I contacted Cox, and looking at the stats my dBM and SNR stats were horrible.  They sent a tech out, he replaced the RG6 from the bed to the house through the conduit, said everything was good now.  Showed him my tests still didn’t perform past 150-175MB/20MB.  Wasn’t too concerned, but he would turn it in for someone to look into the plant and it should be complete in about a week. 

About 1 week later after the work was “completed”, checked again, same errors.  Called out another tech.  Tech replaced the line from the ped to the house with RG11 and tested.  Things looked better, but still bad.  Same test speed 150-175MB/20-30MB.  He said he will turn it into the plant.  I follow up via email, can’t escalate because the RG11 wasn’t pulled into the conduit (had a collapse in it).  Why can’t you escalate until then (we know the issue is on the main somewhere), Cox rules.  Said it would be 2-3 weeks!  WHAT?  Eventually the guy comes out to bury the RG11 by hand.  I proceed to tell him that there is a conduit, but it was hanging somewhere.  He reaction was priceless, but doesn’t add much to the story.  He fixes the conduit and pulls the RG11 through it.  Says he will turn it over to plant because it is bad at the ped.

Several days pass and I keep checking the status, tech was out, but more work needs done.  OK, keep bugging and after several days I see the Cox truck down the street.  Tech stops by my house after he is done, but of course, I was out.  Tells my wife he had to replace about 5 feet of the main line due to damage.  I get home, SNR and errors are definitely better, but still can’t top 250MB.  I notify Cox again and they rolled another truck today.  Tech comes out and I show him the tests.  He plugs into my SB8200 and tests via ethernet, same result about 250MB.  Plugs the coax into his tester, coax runs 1.1GB.  We plug my SB6190 back in and he calls provisioning to reactive and change service to 300MB for testing, same result, about 250MB.  Conclusion, confusion, doesn’t know what to do.  I go buy a Netgear CM1000 and get it provisioned, all channels look good, but still only about 250MB via speedtest to the Cox servers.  So, three cable modems, and nothing runs over 250MB.

Setup no splitters at all:  PED (RG11) – MPOE (grounded, RG11 to cable modem) – CM1000.  Can’t get any simpler.

The biggest constant is that channel 159, the ODFM channel has millions to billions correctable errors.  I brought that up to the Cox tech today and he said they don’t use channel 159 for cable modems, I told him it showed up after changing to Gigablast. 

So, at this point, I’m not sure what to do next except find out when AT&T is pulling fiber to my neighborhood as they are currently working two neighborhoods away with fiber. 

These stats are from being up about an hour:

 

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Frequency start Value

This field below allows you to modify the frequency the cable modem start with its scan during initialization and registration. Enter the new start frequency and restart the cable modem for it to take effect.

Starting Frequency

<tabindex=-1>Startup Procedure

Procedure Status Comment Acquire Downstream Channel 957000000 Hz Locked Connectivity State OK Operational Boot State OK Operational Security Enable BPI+ IP Provisioning Mode Honor MDD IPv4 only

<tabindex=-1>Downstream Bonded Channels

Channel Lock Status Modulation Channel ID Frequency Power SNR / MER Unerrored Codewords Correctable Codewords Uncorrectable Codewords 1 Locked QAM256 30 957000000 Hz -3.9 dBmV 36.1 dB 284523382 0 0 2 Locked QAM256 1 783000000 Hz 0.1 dBmV 38.3 dB 283019093 0 0 3 Locked QAM256 2 789000000 Hz 0.0 dBmV 38.4 dB 283029597 0 0 4 Locked QAM256 3 795000000 Hz -0.3 dBmV 38.2 dB 283038500 0 0 5 Locked QAM256 4 801000000 Hz -0.7 dBmV 37.9 dB 283047535 0 0 6 Locked QAM256 9 831000000 Hz -2.9 dBmV 37.2 dB 283057773 0 0 7 Locked QAM256 10 837000000 Hz -3.4 dBmV 37.0 dB 283066369 0 0 8 Locked QAM256 11 843000000 Hz -2.5 dBmV 37.4 dB 283083539 0 0 9 Locked QAM256 12 849000000 Hz -1.8 dBmV 37.5 dB 283094100 0 0 10 Locked QAM256 17 879000000 Hz -1.2 dBmV 37.6 dB 283104073 0 0 11 Locked QAM256 18 885000000 Hz -1.1 dBmV 37.7 dB 283113262 0 0 12 Locked QAM256 19 891000000 Hz -1.5 dBmV 37.9 dB 283122663 0 0 13 Locked QAM256 20 897000000 Hz -2.6 dBmV 37.5 dB 283132112 0 0 14 Locked QAM256 21 903000000 Hz -3.1 dBmV 37.2 dB 283141101 0 0 15 Locked QAM256 22 909000000 Hz -3.5 dBmV 36.7 dB 283150075 0 0 16 Locked QAM256 25 927000000 Hz -3.5 dBmV 36.5 dB 283160015 0 0 17 Locked QAM256 26 933000000 Hz -3.5 dBmV 36.8 dB 283168744 0 0 18 Locked QAM256 27 939000000 Hz -3.4 dBmV 36.8 dB 283178904 0 0 19 Locked QAM256 28 945000000 Hz -3.1 dBmV 36.9 dB 283187825 0 0 20 Locked QAM256 29 951000000 Hz -3.2 dBmV 36.5 dB 283197534 0 0 21 Locked QAM256 33 357000000 Hz 2.1 dBmV 38.7 dB 283206999 0 0 22 Locked QAM256 34 363000000 Hz 2.1 dBmV 39.0 dB 283216566 0 0 23 Locked QAM256 35 369000000 Hz 2.4 dBmV 39.1 dB 283225979 0 0 24 Locked QAM256 36 375000000 Hz 2.0 dBmV 38.9 dB 283234999 0 0 25 Locked QAM256 37 381000000 Hz 2.3 dBmV 39.0 dB 283245141 0 0 26 Locked QAM256 38 387000000 Hz 2.3 dBmV 39.1 dB 283254946 0 0 27 Locked QAM256 41 405000000 Hz 2.7 dBmV 39.1 dB 283264006 0 0 28 Locked QAM256 42 411000000 Hz 2.4 dBmV 39.0 dB 283273450 0 0 29 Locked QAM256 43 417000000 Hz 2.1 dBmV 39.0 dB 283282587 0 0 30 Locked QAM256 44 423000000 Hz 2.5 dBmV 39.2 dB 283291900 0 0 31 Locked QAM256 45 429000000 Hz 2.3 dBmV 39.0 dB 283299208 0 0 32 Locked QAM256 46 435000000 Hz 2.4 dBmV 39.1 dB 283304124 0 0

<tabindex=-1>Upstream Bonded Channels

Channel Lock Status Modulation Channel ID Frequency Power 1 Locked ATDMA 1 19100000 Hz 35.0 dBmV 2 Locked ATDMA 2 23900000 Hz 36.3 dBmV 3 Locked ATDMA 3 30300000 Hz 38.0 dBmV 4 Locked ATDMA 4 36700000 Hz 39.3 dBmV 5 Not Locked Unknown 0 0 Hz 0.0 dBmV 6 Not Locked Unknown 0 0 Hz 0.0 dBmV 7 Not Locked Unknown 0 0 Hz 0.0 dBmV 8 Not Locked Unknown 0 0 Hz 0.0 dBmV

<tabindex=-1>Downstream OFDM Channels

Channel Lock Status Modulation / Profile ID Channel ID Frequency Power SNR / MER Active Subcarrier Number Range Unerrored Codewords Correctable Codewords Uncorrectable Codewords 1 Locked 0, 1, 2, 3 159 300000000 Hz 5.8 dBmV 40.0 dB 1108 ~ 2987 267347371 4417982 0 2 Not Locked 0 0 0 Hz 3.3 dBmV 0.0 dB 0 ~ 4095 0 0 0

<tabindex=-1>Upstream OFDMA Channels

Channel Lock Status Modulation / Profile ID Channel ID Frequency Power 1 Not Locked Unknown 0 0 Hz 0 dBmV 2 Not Locked Unknown 0 0 Hz 0 dBmV

Current System Time: Mon Aug 13 19:35:04 2018

Any help would be appreciated.