What are good signal levels

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I'm a Reliable Contributor
Posts: 338

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
Resident Expert
Resident Expert
Posts: 6,147

Re: What are good signal levels

@mahomed 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.  



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
 
 
Moderator
Moderator
Posts: 696

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

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!