What are good signal levels

Need Help?

That's what we're here for! The goal of the Rogers Community is to help you find answers on everything Rogers. Can't find what you're looking for? Just ask!
cancel
Showing results for 
Search instead for 
Did you mean: 
Reply
Highlighted
I'm a Reliable Contributor
Posts: 390

Re: What are good signal levels

Hello

 

I just wanted to know if these signal levels are good or if there is something on my side that needs investigating.  The issue I find is that I have a 500 Mbit connection and wired speed tests are about 600 Mbps.  On the 5 GHz band, I seem to max out at 350 on all my AC devices.  I just wanted to know if getting a separate Router would improve the speeds.  Thanks

 

Downstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDSignal noise ratio (dB)
1597000000256QAM3.400838.983
2849000000256QAM-2.600237.636
3855000000256QAM-3.200337.356
4861000000256QAM-3.500436.610
5579000000256QAM2.500538.983
6585000000256QAM3.200638.983
7591000000256QAM3.600738.605
8279000000256QAM1.400137.636
9603000000256QAM2.800938.983
10609000000256QAM1.9001038.983
11615000000256QAM0.9001138.605
12621000000256QAM0.1001237.636
13633000000256QAM-0.1001337.636
14639000000256QAM0.0001437.636
15645000000256QAM0.2001537.636
16651000000256QAM1.0001638.605
17657000000256QAM1.9001738.605
18663000000256QAM2.6001838.605
19669000000256QAM3.4001938.983
20675000000256QAM4.1002038.983
21681000000256QAM3.7002138.605
22687000000256QAM2.8002238.605
23693000000256QAM1.6002338.605
24699000000256QAM0.6002438.605
25705000000256QAM-0.5002537.636
26711000000256QAM-1.2002638.605
27717000000256QAM-1.2002737.636
28723000000256QAM-1.7002837.356
29825000000256QAM-2.3002937.636
30831000000256QAM-2.2003037.356
31837000000256QAM-1.8003137.636
32843000000256QAM-2.2003237.356
OFDM Downstream Overview
ReceiverFFT typeSubcarr 0 Frequency(MHz)PLC lockedNCP lockedMDC1 lockedPLC power(dBmv)
0NANANONONONA
14K275600000YESYESYES1.000000
Upstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDBandwidth
130596000ATDMA - 64QAM31.00016400000
238596000ATDMA - 64QAM34.25033200000
323700000ATDMA - 64QAM30.50026400000
OFDM/OFDMA Overview
Channel IndexStatelin Digital AttDigital AttBW (sc's*fft)Report PowerReport Power1_6FFT Size
0DISABLED0.50000.00000.0000-inf-1.00004K
1DISABLED0.50000.00000.0000-inf-1.00004K
Highlighted
Resident Expert
Resident Expert
Posts: 7,005

Re: What are good signal levels

@Alex4161 your signal levels for the downstream and upstream DOCSIS 3.0 channels appear to be fine.  The downstream spread, from top to bottom level is a little wider than I'd like to see, but, they're ok where they are.  The DOCSIS 3.1 OFDM downstream levels are a mystery as there isn't enough data presented to make any conclusion possible.  The first and most obvious sign of the OFDM channel health is whether or not you're seeing the download rate that you should be getting (via ethernet). 

 

So, if you're seeing the max download rates via ethernet that you expect, then the next question is the wifi.  Fwiw, I've seen 600 Mb/s download with this modem, running speedtests using the DFS channels, where no one else is operating.  The modem might actually be able to run faster, but, the laptop that I was using for the test probably tops out around 600 Mb/s.  

 

So, the question becomes one of, who else is running on the same channel and are the wifi parameters set to obtain the highest level of performance possible?  Have a look at the following post so that you can compare the wifi settings and look at your wifi environment.  Skip down to the settings and scanning applications.

 

https://communityforums.rogers.com/t5/Internet/slow-wifi/m-p/429489#M54216

 

At the end of the day, even if you were running a wifi network in the channel 149 range and higher, without having to share channel bandwidth with your neighbours, the data rates that you end up with are still dependent on the number of devices on the network, the device's wifi adapter, and whether those devices have one, two or more wifi antenna onboard.  Unfortunately, unless a consumer does a fair amount of homework to buy the best wifi devices available, in terms of potential data rates, the usual result are devices with lesser performance, either due to the wifi adapter in the device, or limitations due to the number of antenna used for wifi purposes.  The device manufacturers don't seem to be in a rush to really improve wifi performance and they don't make it easy for the consumer to determine what to expect in terms of max data rates from any prospective device.  The arrival of 802.11ax will change that as those devices are hitting the market now, but, its going to be a while before end users have modems, routers and devices with 802.11ax onboard. 

 

For the question of, are you better off with a router, my personal opinion is yes, as the router might have a higher wifi output power level, user enabled beamforming which can help, and greater control over other typical router and wifi settings which will give you better wifi performance.  It all depends on the router in question.  If you decide to go that route, you should be looking for a router with a processor that runs at a minimum 1.4 Ghz, preferably higher for gigabit rates, and external antenna.  



Highlighted
I Plan to Stick Around
Posts: 10

Re: What are good signal levels

A few months ago a new node was installed at the end of my street a few hundred metres from my house. Not having any issues but notice a lot of temp drops at houses between me and the node. 

 

Was as wondering if the variation of signal levels may be a potential issue. Modem is the CODA-4582 and I’m on Ignite 300u. 

 

Downstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDSignal noise ratio (dB)
1597000000256QAM-0.900838.605
2849000000256QAM-4.700237.636
3855000000256QAM-4.700337.636
4861000000256QAM-4.800437.636
5579000000256QAM-0.400538.605
6585000000256QAM-0.700638.605
7591000000256QAM-0.400738.983
8279000000256QAM3.500138.605
9603000000256QAM-1.100938.605
10609000000256QAM-0.9001038.983
11615000000256QAM-0.9001138.983
12621000000256QAM-0.9001238.605
13633000000256QAM-1.0001338.983
14639000000256QAM-1.3001438.983
15645000000256QAM-1.3001538.605
16651000000256QAM-1.4001638.605
17657000000256QAM-1.5001738.605
18663000000256QAM-1.4001838.605
19669000000256QAM-1.7001938.605
20675000000256QAM-1.6002038.983
21681000000256QAM-1.7002138.983
22687000000256QAM-1.9002238.983
23693000000256QAM-2.1002338.605
24699000000256QAM-2.4002438.605
25705000000256QAM-2.5002538.983
26711000000256QAM-2.8002638.605
27717000000256QAM-2.7002738.605
28723000000256QAM-2.6002838.605
29825000000256QAM-4.2002937.636
30831000000256QAM-4.4003037.636
31837000000256QAM-4.5003137.636
32843000000256QAM-4.7003237.356
OFDM Downstream Overview
ReceiverFFT typeSubcarr 0 Frequency(MHz)PLC lockedNCP lockedMDC1 lockedPLC power(dBmv)
0NANANONONONA
14K275600000YESYESYES3.099998
Upstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDBandwidth
130596000ATDMA - 64QAM30.50016400000
238596000ATDMA - 64QAM32.75033200000
323700000ATDMA - 64QAM29.25026400000
 
 
Highlighted
Moderator
Moderator
Posts: 1,047

Re: What are good signal levels

Hello, @fspilot

 

I know how important it is to ensure the signal levels to your modem are within the right range to avoid experiencing any technical issues with your Internet service.

 

The signal levels you've posted look great on the Downstream channels. It does seem to range from -4.70 to +3.50 but it is still well within the correct range for this time of year which is -13.5 to +12.5. The Upstream channels are a bit on the low side with channel 3 showing 29.25 which is out of the specification range of 30.5 to 53. It is not outside of the range by much so it should not cause any significant issues.

 

If you are not noticing any issues on your end I would not worry about the signal level fluctuations.

 

Thanks for your post!

 

RogersTony

Highlighted
I Plan to Stick Around
Posts: 10

Re: What are good signal levels

No issues on my end. Upload/download speeds are great and low jitter with no packet loss. 

 

Thanks for the reply and info Tony!

Highlighted
I've Been Here Awhile
Posts: 4

Re: What are good signal levels

Been having some disconnections lately and wonder how these look. I checked that the cable I'm plugging into in the basement(from outside) is rg6, and the one that goes to my modem is also rg6.
Downstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDSignal noise ratio (dB)
1591000000256QAM-6.200737.636
2849000000256QAM-5.600238.605
3855000000256QAM-6.300338.605
4861000000256QAM-6.800437.636
5579000000256QAM-15.900530.824
6585000000256QAM-11.300633.957
7279000000256QAM-2.400140.366
8597000000256QAM-4.800838.605
9603000000256QAM-4.700938.605
10609000000256QAM-3.4001038.605
11615000000256QAM-3.1001138.983
12621000000256QAM-3.0001238.983
13633000000256QAM-2.8001338.983
14639000000256QAM-2.5001438.983
15645000000256QAM-2.1001538.983
16651000000256QAM-2.7001638.983
17657000000256QAM-2.6001738.605
18663000000256QAM-1.9001838.983
19669000000256QAM-2.2001938.983
20675000000256QAM-2.1002038.983
21681000000256QAM-2.0002140.946
22687000000256QAM-2.8002238.983
23693000000256QAM-1.8002338.983
24699000000256QAM-1.3002438.983
25705000000256QAM-2.2002540.366
26711000000256QAM-1.3002638.983
27717000000256QAM-0.8002738.983
28723000000256QAM-1.6002839.397
29825000000256QAM-3.4002938.983
30831000000256QAM-4.3003038.605
31837000000256QAM-4.9003138.605
32843000000256QAM-5.5003238.605
OFDM Downstream Overview
ReceiverFFT typeSubcarr 0 Frequency(MHz)PLC lockedNCP lockedMDC1 lockedPLC power(dBmv)
0NANANONONONA
14K275600000YESYESYES-2.299999
Upstream Overview
Port IDFrequency (MHz)ModulationSignal strength (dBmV)Channel IDBandwidth
138596000ATDMA - 64QAM39.50033200000
230596000ATDMA - 64QAM35.75016400000
323700000ATDMA - 64QAM34.00026400000
OFDM/OFDMA Overview
Channel IndexStatelin Digital AttDigital AttBW (sc's*fft)Report PowerReport Power1_6FFT Size
0DISABLED0.50000.00000.0000-inf-1.00004K
1DISABLED0.50000.00000.0000-inf-1.00004K
Highlighted
Moderator
Moderator
Posts: 1,314

Re: What are good signal levels

Good morning and welcome to our Community @drjohnst!

 

Taking a look at the signal results you've provided, I am seeing a couple of these channels are out of spec. I would like to run some additional diagnostics for you. Please PM us @CommunityHelps so that I may further assist. If you're not familiar with our PMing process, you can find instructions here.

 

Regards,

RogersCorey

Highlighted
I Plan to Stick Around
Posts: 37

Re: What are good signal levels

Hi,

Starting to get drop offs where I lose my internet for a couple of minutes the last 4 weeks. Hitron gigabit modem showing these events below, here are my modem readings. To see what kind of improvement I would get I connected the modem directly to the Rogers provided splitter in the basement where it enters the house and could improve the db loss by +6->7 across the spectrum versus in my living room (about 50ft of RG6 and a 2 way splitter -3.5db between the basement and living room). No issues on the cable side with the TV although I looked at the db loss on my Nextbox3 and some channels are -13db. The loss I see in the living room looks normal to me given the RG6 and 2 way splitter. Checked all connections, look fine.

 

I used a loss calculator and for my length of RG6 (plus add in the 2 way splitter -3.5db) the loss I am seeing seems very normal. S/N ratios look fine as you can see. The Rogers pedestal where my underground wire runs to is about 80 feet from the entrance to the house. I have run speed tests today and still running between 400->500gb on my laptop so that seems fine.

 

I had no issues with this same modem for a year until mid October when I started these drops of connectivity to the network on the wan side. Nothing changed in the house.

 

Does the signal level of -4 to -6db at the Rogers splitter in the basement look to low to you?

What signal would be expected coming into the house from Rogers?

 

Thanks

 

1 11/10/2019 00:57:54 90000000 warning MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=***Privacy***;CMTS-MAC=***Privacy***;CM-QOS=1.1;CM-VER=3.1;
2 11/11/2019 04:59:36 84020200 warning Lost MDD Timeout;CM-MAC=***Privacy***;CMTS-MAC=***Privacy***;CM-QOS=1.1;CM-VER=3.1;
3 11/11/2019 05:09:16 82000200 critical No Ranging Response received - T3 time-out;CM-MAC=***Privacy***;CMTS-MAC=***Privacy***;CM-QOS=1.1;CM-VER=3.1;
4 11/12/2019 12:54:30 84020200 warning Lost MDD Timeout;CM-MAC=***Privacy***;CMTS-MAC=***Privacy***;CM-QOS=1.1;CM-VER=3.1;

 

Downstream Overview
Port ID Frequency (MHz) Modulation Signal strength (dBmV) Channel ID Signal noise ratio (dB)
1 603000000 256QAM -11.500 9 35.084
2 849000000 256QAM -14.000 2 33.487
3 855000000 256QAM -14.600 3 33.487
4 861000000 256QAM -14.600 4 33.487
5 579000000 256QAM -11.600 5 34.926
6 585000000 256QAM -11.200 6 35.084
7 591000000 256QAM -11.000 7 35.780
8 597000000 256QAM -11.200 8 35.595
9 303000000 256QAM -5.800 1 37.356
10 609000000 256QAM -11.400 10 35.084
11 615000000 256QAM -11.100 11 35.595
12 621000000 256QAM -11.800 12 35.084
13 633000000 256QAM -11.700 13 34.926
14 639000000 256QAM -11.400 14 34.926
15 645000000 256QAM -11.600 15 34.926
16 651000000 256QAM -11.500 16 34.926
17 657000000 256QAM -11.100 17 35.084
18 663000000 256QAM -11.000 18 35.084
19 669000000 256QAM -10.800 19 35.084
20 675000000 256QAM -10.700 20 35.084
21 681000000 256QAM -10.500 21 35.780
22 687000000 256QAM -10.700 22 35.084
23 693000000 256QAM -10.700 23 35.595
24 699000000 256QAM -11.000 24 34.926
25 705000000 256QAM -10.900 25 35.084
26 711000000 256QAM -11.100 26 35.084
27 717000000 256QAM -11.200 27 34.926
28 723000000 256QAM -11.300 28 34.926
29 825000000 256QAM -13.400 29 33.957
30 831000000 256QAM -13.400 30 33.957
31 837000000 256QAM -13.600 31 33.957
32 843000000 256QAM -13.900 32 33.957
OFDM Downstream Overview
Receiver FFT type Subcarr 0 Frequency(MHz) PLC locked NCP locked MDC1 locked PLC power(dBmv)
0 NA NA NO NO NO NA
1 NA NA YES NO YES NA
Upstream Overview
Port ID Frequency (MHz) Modulation Signal strength (dBmV) Channel ID Bandwidth
1 25300000 ATDMA - 64QAM 35.750 2 3200000
2 36996000 ATDMA - 64QAM 33.750 4 6400000
3 30596000 ATDMA - 64QAM 33.750 3 6400000
4 22100000 ATDMA - 64QAM 34.500 1 3200000
OFDM/OFDMA Overview
Channel Index State lin Digital Att Digital Att BW (sc's*fft) Report Power Report Power1_6 FFT Size
0 DISABLED 0.5000 0.0000 0.0000 -inf -1.0000 4K
1 DISABLED 0.5000 0.0000 0.0000 -inf -1.0000 4K
Highlighted
I Plan to Stick Around
Posts: 37

Re: What are good signal levels

I have run speed tests today and still running between 400->500gb on my laptop so that seems fine.

 

Sorry 400->520mb per second not gb,  duhhh 😉  Also I should have mentioned I am on a 500mb package, not the

gigabit one so these speeds are reasonable.

Highlighted
Resident Expert
Resident Expert
Posts: 7,005

Re: What are good signal levels

@User1030445 call tech support and ask the Customer Service Rep to run a signal check on your modem.  Your DOCSIS 3.0 channels ( 1 to 32) are all low.  They should be sitting at 0 dBmV.  After a splitter its understandable to see them around -4/-5 dBmV.  Ideally however, they should be at 0 dBmV across the board.  

 

Your modem appears to be using the upper DOCSIS 3.0  channels instead of the DOCSIS 3.1 OFDM channel.  It should be using the DOCSIS 3.1 ODFM channel.  The OFDM channel details aren't complete, so, that's a hint that there's an issue in the 200 to 500 Mhz band that is preventing the OFDM channel from operating correctly.  

 

Your upstream DOCSIS 3.0 channels are in a normal range for this modem.  

 

That signal check should fail automatically, followed by a discussion to get a tech out to your home.