Computers & Electronics

Rogers Gigabit Internet Technical Discussion

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  • Dec 10th, 2017 4:50 pm
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Deal Addict
Feb 4, 2015
2628 posts
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Canada, Eh!!
tkyoshi wrote:
Dec 17th, 2016 6:13 pm
Downstream is excellent, almost bang on on what the most ideal signal should be (0 dBmV)

Upstream is poor, it is slightly out of range. Surprised you're still getting acceptable upload speeds at least though. 35 to 52 is the acceptable range.
Was given powered splitter due to internet issues... how are these stats? Channels 29-32 seem bit high? Thanks

Downstream Overview
Port ID Frequency (MHz) Modulation Signal strength (dBmV) Channel ID Signal noise ratio (dB)
1 693000000 256QAM -1.900 47 37.356
2 363000000 256QAM -0.300 10 38.605
3 369000000 256QAM 0.100 11 38.605
4 375000000 256QAM -0.100 12 38.605
5 405000000 256QAM -0.400 17 38.605
6 411000000 256QAM -0.600 18 38.605
7 417000000 256QAM -0.500 19 38.605
8 423000000 256QAM -0.500 20 38.605
9 429000000 256QAM 0.000 21 38.605
10 435000000 256QAM 0.000 22 38.983
11 441000000 256QAM -0.300 23 38.983
12 447000000 256QAM -0.200 24 38.605
13 555000000 256QAM 0.900 25 38.605
14 561000000 256QAM 0.600 26 38.983
15 567000000 256QAM 0.400 27 38.605
16 573000000 256QAM 0.100 28 38.605
17 579000000 256QAM 0.200 29 37.636
18 585000000 256QAM -0.100 30 37.636
19 591000000 256QAM -0.200 31 37.636
20 597000000 256QAM -0.400 32 37.636
21 633000000 256QAM -0.200 37 37.356
22 639000000 256QAM 0.200 38 37.356
23 645000000 256QAM -0.300 39 37.636
24 651000000 256QAM -0.100 40 37.636
25 681000000 256QAM -0.900 45 37.900
26 687000000 256QAM -1.100 46 37.900
27 357000000 256QAM 0.200 9 38.200
28 699000000 256QAM -1.300 48 37.300
29 825000000 256QAM -4.500 53 36.900
30 831000000 256QAM -3.800 54 37.300
31 837000000 256QAM -3.700 55 37.300
32 843000000 256QAM -4.800 56 36.900
Upstream Overview
Port ID Frequency (MHz) Modulation Signal strength (dBmV) Channel ID BandWidth
1 23700000 ATDMA - 64QAM 36.500 2 6400000
2 38596000 ATDMA - 64QAM 37.750 3 3200000
3 30596000 ATDMA - 64QAM 37.000 1 6400000
[OP]
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Jun 22, 2007
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Brampton
georvu wrote:
Dec 18th, 2016 12:13 pm
Was given powered splitter due to internet issues... how are these stats? Channels 29-32 seem bit high? Thanks

Downstream Overview
Port ID Frequency (MHz) Modulation Signal strength (dBmV) Channel ID Signal noise ratio (dB)
1 693000000 256QAM -1.900 47 37.356
2 363000000 256QAM -0.300 10 38.605
3 369000000 256QAM 0.100 11 38.605
4 375000000 256QAM -0.100 12 38.605
5 405000000 256QAM -0.400 17 38.605
6 411000000 256QAM -0.600 18 38.605
7 417000000 256QAM -0.500 19 38.605
8 423000000 256QAM -0.500 20 38.605
9 429000000 256QAM 0.000 21 38.605
10 435000000 256QAM 0.000 22 38.983
11 441000000 256QAM -0.300 23 38.983
12 447000000 256QAM -0.200 24 38.605
13 555000000 256QAM 0.900 25 38.605
14 561000000 256QAM 0.600 26 38.983
15 567000000 256QAM 0.400 27 38.605
16 573000000 256QAM 0.100 28 38.605
17 579000000 256QAM 0.200 29 37.636
18 585000000 256QAM -0.100 30 37.636
19 591000000 256QAM -0.200 31 37.636
20 597000000 256QAM -0.400 32 37.636
21 633000000 256QAM -0.200 37 37.356
22 639000000 256QAM 0.200 38 37.356
23 645000000 256QAM -0.300 39 37.636
24 651000000 256QAM -0.100 40 37.636
25 681000000 256QAM -0.900 45 37.900
26 687000000 256QAM -1.100 46 37.900
27 357000000 256QAM 0.200 9 38.200
28 699000000 256QAM -1.300 48 37.300
29 825000000 256QAM -4.500 53 36.900
30 831000000 256QAM -3.800 54 37.300
31 837000000 256QAM -3.700 55 37.300
32 843000000 256QAM -4.800 56 36.900
Upstream Overview
Port ID Frequency (MHz) Modulation Signal strength (dBmV) Channel ID BandWidth
1 23700000 ATDMA - 64QAM 36.500 2 6400000
2 38596000 ATDMA - 64QAM 37.750 3 3200000
3 30596000 ATDMA - 64QAM 37.000 1 6400000
They are ok as they can go up to -10 .. Idealy close to 0 should be good but dont forget its cold outside ..

Also the upstream can be close to 40-43 but again its not out of boundary again ..
[OP]
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Jun 22, 2007
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Brampton
Everyone use beta.speedtest.net to get accurate speed and to avoid speedtest giving fake results, while the speed test is going check your network under task manager

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May 26, 2002
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Mayoo, you can't look at taskmanager network stats to give you your cable modem stat as you are measuring the throughput of the network adapter and not the cable modem. The network adapter stat will always be higher because it doesn't count the packet overhead nor does it penalize packets from the cable modem that had to be resent. That being said the HTML5 speedtest has much less overhead then the Flash Player test, the Flash Player test gives you must more varying results depending on the browser you are using.

Here are the results of my speed test with the new Hitron modem (it's also posted in the other thread):

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I few things I have notice with the CODA-4582 modem compared to the 3552, maybe others have noticed as well:
  • CODA-4582 seems to boost signal strength (dBmV) to achieve 40+ Signal Noise Ratio (dB). After the modem switch all my SNR is in 40.XX range, signal strength increased to 6-7 dBmV range
  • On the 3552 signal strength was between -2 and 2 dBmV however SNR was between 35-38 dB
As I do not have both modems on hand to compare right now I am going by memory on the 3552 but it appears the new CODA-4582 prioritizes SNR and will boost signal strength to achieve SNR of 40 dB as long as it's within the +10-15 dBmV range, which is completely opposite of the 3552 which appears to prioritize not boosting signal strength as long as the SNR is 35 dB or higher.

-LeeBear
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Mar 5, 2012
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Guelph
So what's the consensus? I know my rogers installer did a thorough job of making sure my signal strength was where it needed to be for my gigabit modem, if I swap out for the new one, should the signal strength (or whatever were referring to) not stay the same? Or will I have to add boosters or limiters (forget the term) dependent?
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Feb 16, 2005
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Getting crappy speeds/ping on and off tonight, anyone else?
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Oct 6, 2005
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nsd wrote:
Dec 18th, 2016 11:37 pm
Getting crappy speeds/ping on and off tonight, anyone else?
Looks fine for me now - it was "slow" during prime time however, I was unable to go past 650mbps.

Image
Member
Feb 9, 2008
452 posts
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nsd wrote:
Dec 18th, 2016 11:37 pm
Getting crappy speeds/ping on and off tonight, anyone else?
I'm on the old modem (CGNM-3552) and this is what I'm getting right now... I'm on the gigabit plan.

Image
Deal Addict
May 26, 2002
1751 posts
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cheetah33 wrote:
Dec 19th, 2016 8:39 pm
I'm on the old modem (CGNM-3552) and this is what I'm getting right now... I'm on the gigabit plan.

Image
On new modem CODA-4582 right now 8:46 PM

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-LeeBear
[OP]
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Jun 22, 2007
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LeeBear wrote:
Dec 18th, 2016 6:46 pm
Mayoo, you can't look at taskmanager network stats to give you your cable modem stat as you are measuring the throughput of the network adapter and not the cable modem. The network adapter stat will always be higher because it doesn't count the packet overhead nor does it penalize packets from the cable modem that had to be resent. That being said the HTML5 speedtest has much less overhead then the Flash Player test, the Flash Player test gives you must more varying results depending on the browser you are using.

Here are the results of my speed test with the new Hitron modem (it's also posted in the other thread):

Image
Image
Image

I few things I have notice with the CODA-4582 modem compared to the 3552, maybe others have noticed as well:
  • CODA-4582 seems to boost signal strength (dBmV) to achieve 40+ Signal Noise Ratio (dB). After the modem switch all my SNR is in 40.XX range, signal strength increased to 6-7 dBmV range
  • On the 3552 signal strength was between -2 and 2 dBmV however SNR was between 35-38 dB
As I do not have both modems on hand to compare right now I am going by memory on the 3552 but it appears the new CODA-4582 prioritizes SNR and will boost signal strength to achieve SNR of 40 dB as long as it's within the +10-15 dBmV range, which is completely opposite of the 3552 which appears to prioritize not boosting signal strength as long as the SNR is 35 dB or higher.

-LeeBear
Nice,

So did you had any issues before ? did this modem solve any problems for you ?
Member
Aug 15, 2007
249 posts
87 upvotes
Richmond Hill
FYI, they recently upgraded their Modem/Router, it's some new Hitron that looks like a big square box, kinda like the Google Routers, I don't really like it because now it's hard to hide because of the new size.

Because I'm only in Bridge mode, doesn't really help me, I'm assuming it has faster WiFi speeds...

Image
Member
Aug 15, 2007
249 posts
87 upvotes
Richmond Hill
Image

Wow I think they fixed the upload in my area, it was less than 20 Mbps before.
Deal Addict
Mar 19, 2005
3163 posts
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Toronto
Picked up the new Hitron modem. Pretty good speeds (High Park/Roncesvalles area)

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Deal Addict
May 26, 2002
1751 posts
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Mayoo wrote:
Dec 20th, 2016 3:51 pm
Nice,

So did you had any issues before ? did this modem solve any problems for you ?
I use my own Router so the old Hitron CGNM-3552 gave me issues in bridge mode. It's well known issue that requires a modem reset. It was annoying a few times a week. The new CODA-4582 so far doesn't have any issues in bridge mode. Also I believe Rogers will make you switch modems in the future anyways as they are starting to roll out DOCSIS 3.1 and the CGNM-3552 only supports 3.0

-LeeBear

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