What are good signal levels

[s1lva166]

Hi everyone!

I'm currently on the Hybrid Fibre 150 package and I'm using the Hitron CGN3ROG modem/router. I was wondering what are good downstream and upstream signal ratios? If someone could provide a range that would be great. I'm also wondering what were the best signals you have seen coming from the router? Here is a screen shot of my current signals:

Downstream:
http://snag.gy/lVf3P.jpg

Upstream:

http://snag.gy/UOm2F.jpg

Thanks!

***edited labels***

[Alex4161]

Now my levels took a nosedive again.  Is there someone that can look into this for me please?

Thanks

DOCSIS WAN

This menu displays both upstream and downstream signal parameters

DOCSIS Overview

Network Access	Permitted
Subnet Mask	255.255.252.0
DHCP Lease Time	😧 06 H: 07 M: 56 S: 54

Downstream Overview

Port ID	Frequency (MHz)	Modulation	Signal strength (dBmV)	Channel ID	Signal noise ratio (dB)
1	657000000	256QAM	-3.300	17	35.780
2	849000000	256QAM	-5.700	2	35.780
3	855000000	256QAM	-5.600	3	35.780
6	585000000	256QAM	-0.500	6	36.387
8	597000000	256QAM	-0.100	8	37.356
9	603000000	256QAM	-0.700	9	37.356
10	609000000	256QAM	-1.600	10	36.610
11	615000000	256QAM	-2.500	11	36.387
12	621000000	256QAM	-3.000	12	35.780
13	633000000	256QAM	-4.000	13	35.780
14	639000000	256QAM	-4.600	14	35.084
15	645000000	256QAM	-4.600	15	34.926
16	651000000	256QAM	-3.900	16	35.780
17	303000000	256QAM	1.200	1	35.780
18	663000000	256QAM	-2.400	18	36.610
19	669000000	256QAM	-1.800	19	37.356
20	675000000	256QAM	-1.200	20	37.356
21	681000000	256QAM	-1.500	21	36.610
22	687000000	256QAM	-2.300	22	36.610
23	693000000	256QAM	-3.600	23	36.387
24	699000000	256QAM	-4.700	24	35.595
25	705000000	256QAM	-5.700	25	35.595
26	711000000	256QAM	-7.200	26	34.484
27	717000000	256QAM	-7.500	27	33.834
28	723000000	256QAM	-7.600	28	33.957
29	825000000	256QAM	-6.900	29	34.926
30	831000000	256QAM	-6.100	30	35.780
31	837000000	256QAM	-6.200	31	35.595
32	843000000	256QAM	-6.300	32	35.595

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	4K	275600000	YES	YES	YES	1.400002

Upstream Overview

Port ID	Frequency (MHz)	Modulation	Signal strength (dBmV)	Channel ID	Bandwidth
1	30596000	ATDMA - 64QAM	35.750	1	6400000
2	38596000	ATDMA - 64QAM	38.750	3	3200000
3	23700000	ATDMA - 64QAM	35.250	2	6400000

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

[gp-se]

@Alex4161

I would advise you to remove the Amplifier and call Rogers then have them check your line stats. I would ask them to compare to a neighbour so they can see if this is an area wide issue, or just your connection. Also don't mess around with the connection, if Rogers put an AMP in then leave it alone. 

It's best to have a tech come out and equalize the line. then you don't touch it. Rogers knows how to set the coax up, when a customer plays with it you can be putting a lot of noise and ingress into the cable plant which ruins the experience for everyone.

The spec is -10 to +10, 0 is optimal but not required, my line stats are actually around -7, but I've never had an issue getting full gigabit speed (950mb/s), don't think you need the line right at 0 to get full speed, that's not how DOCSIS works. SNR is much more important, and buy playing with the line you can be causing major SNR issues for everyone on your TAP/NODE/CMTS.

[Alex4161]

@gp-se

Thanks for your reply.

It turned out that Rogers was fixing an area issue at the distribution box for most of the day and now my levels look good.  I have the amp as the way the wiring is without it, I get a 10 dB loss on the line and it puts things pretty weak to the point that the OFDM Downstream won't lock.

Downstream Overview

Port ID	Frequency (MHz)	Modulation	Signal strength (dBmV)	Channel ID	Signal noise ratio (dB)
1	609000000	256QAM	5.800	10	37.636
2	849000000	256QAM	0.900	2	37.636
3	855000000	256QAM	1.000	3	36.610
6	585000000	256QAM	6.400	6	37.636
8	597000000	256QAM	7.200	8	38.605
9	603000000	256QAM	6.700	9	38.605
10	303000000	256QAM	8.000	1	36.610
11	615000000	256QAM	5.000	11	37.356
12	621000000	256QAM	4.700	12	37.636
13	633000000	256QAM	3.900	13	37.636
14	639000000	256QAM	3.500	14	37.356
15	645000000	256QAM	3.600	15	37.636
16	651000000	256QAM	4.300	16	37.636
17	657000000	256QAM	5.100	17	37.356
18	663000000	256QAM	6.000	18	38.983
19	669000000	256QAM	6.800	19	38.605
20	675000000	256QAM	7.500	20	38.605
21	681000000	256QAM	7.500	21	38.605
22	687000000	256QAM	6.800	22	38.605
23	693000000	256QAM	5.700	23	37.636
24	699000000	256QAM	4.600	24	37.636
25	705000000	256QAM	3.500	25	37.636
26	711000000	256QAM	2.100	26	37.356
27	717000000	256QAM	1.800	27	36.387
28	723000000	256QAM	1.600	28	37.356
29	825000000	256QAM	0.000	29	36.610
30	831000000	256QAM	0.700	30	37.356
31	837000000	256QAM	0.500	31	37.356
32	843000000	256QAM	0.400	32	37.356

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	4K	275600000	YES	YES	YES	8.199997

Upstream Overview

Port ID	Frequency (MHz)	Modulation	Signal strength (dBmV)	Channel ID	Bandwidth
1	30596000	ATDMA - 64QAM	40.500	1	6400000
2	38596000	ATDMA - 64QAM	43.500	3	3200000
3	23700000	ATDMA - 64QAM	40.000	2	6400000

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

[Alex4161]

Some guidelines for 

I came across some info about docsis 3/3.1 signal levels and wanted to know if this info is correct:

Docsis 3.0 and 3.1 Signal Levels

Downstream (Rx) Receive Power Level:
This is the amount of signal received by the modem from the transmitter in the cable company head-end.
For all modems DOCSIS 3.0 / 3.1:
 
-7 dBmV to +7 dBmV "Recommended"
-8 dBmV to -10 dBmV / +8 dBmV to +10 dBmV - "Acceptable"
-11 dBmV to -15 dBmV / +11 dBmV to +15 dBmV - "Maximum"
Lower than -15 dBmV & Higher than +15 dBmV - "Out Of Spec."
 
SNR (signal to noise ratio) levels:
This is how clear the signal is at either the modem receiver (downstream SNR) or the receiver in the cable company head-end (upstream SNR).
DOCSIS specifications list minimum CNR (carrier to noise ratio) levels not SNR levels. The SNR levels listed here are based on commonly recommended MER levels for digital cable signals. Not all QAM demodulator chipsets accurately calculate SNR levels that approximate actual MER levels, so these levels may vary depending on which chipset and/or firmware is used in the equipment.
 
*There is no upper SNR limit.
 
For all modems DOCSIS 3.0 / 3.1:
 
256 QAM: 30 dB minimum. 33 dB or higher recommended.
64 QAM: 24 dB minimum. 27 dB or higher recommended.
16 QAM: 18 dB minimum. 21 dB or higher recommended.
QPSK: 12 dB minimum. 15 dB or higher recommended.
 
Downstream SNR levels are read at the modem on the downstream data channel and can be viewed using the modem diagnostic screens.
 
Upstream SNR levels are read at the CMTS on the upstream data channel, not the modem or the modem diagnostic screens. The end-user cannot get the upstream SNR directly. Only the provider can read the upstream SNR level, directly from the CMTS. Also, the upstream SNR level provided by most CMTSs is not specific to any single modem, but is an averaged, aggregate level from all modems on that upstream channel on the upstream port.
 
Upstream (Tx) Transmit Power (a.k.a. Return Signal) level:
This is the amount of signal transmitted by the modem to reach the receiver in the cable company head-end.
 
*Recommended Upstream signal levels are +35 dBmV to +47 dBmV (DOCSIS 3.1)
*Recommended Upstream signal levels are +35 dBmV to +49 dBmV (DOCSIS 3.0)
 
50 dBmV maximum for SC-QAM (DOCSIS 3.1)
52 dBmV maximum for A-TDMA & TDMA (DOCSIS 3.0)
53 dBmV maximum for S-CDMA DOCSIS 2.0 (All Modulations)
54 dBmV maximum for 32 QAM and 64 QAM. (A-TDMA DOCSIS 2.0)
55 dBmV maximum for 8 QAM and 16 QAM. (DOCSIS 1.0, 1.1)
58 dBmV maximum for QPSK. (DOCSIS 1.0, 1.1)
 
A cable modem running a higher upstream modulation rate may downgrade itself to a lower modulation rate (i.e. 64 QAM to 16 QAM or 16 QAM to QPSK) if the upstream transmit level is higher than the maximum signal level allowed for the higher modulation rate and the CMTS is configured to allow such a change. This downgrade can cause slow speed, packet loss, and connection loss issues depending on the condition of the upstream channel.
 
A house or drop amplifier will NOT fix an upstream signal problem because most house amplifiers don't amplify the upstream signals; they only pass the upstream signal through with some loss.
 
Important notes concerning signal levels:
1. Signal levels not within the specifications listed above can cause slow speeds, connection problems, and connection loss due to packet errors, packet loss, and/or constant packet re-transmission.
 
2. It's recommended to have the modem's signal levels at least 3dB away from the maximum/minimum levels listed above due to normal temperature related signal variation. If the modem's signal levels are at the maximum or minimum limits, they may be out of spec. if the temperature changes significantly. Signal levels that vary more then 3 dB in a 24-hour period usually indicate a problem that should be looked into.
 
3. Excess splits, bad connectors, and/or poor quality cabling will certainly effect cable signal levels and will cause problems.

[RogersTony]

Hello @Alex4161,

Thanks so much for posting all of this useful information.

You're spot on with the signal ranges that you've posted. I have double checked them with the tools at our disposal when investigating potential RF issues.

The important notes you've posted are also very informative. We appreciate all of your valuable contributions to the Rogers Community Forums. 

Regards,

RogersTony

[hiho]

general sluggish internet

internet just dosnt seem to be up to par latly just wondering if maybe time for another tech visit 🙂

Port ID	Frequency (MHz)	Modulation	Signal strength (dBmV)	Channel ID	Signal noise ratio (dB)
1	609000000	256QAM	-8.300	10	32.321
2	849000000	256QAM	-14.400	2	30.154
3	855000000	256QAM	-13.500	3	30.824
4	861000000	256QAM	-13.000	4	31.136
5	579000000	256QAM	-6.500	5	33.063
6	585000000	256QAM	-5.500	6	33.487
7	591000000	256QAM	-5.500	7	33.487
8	597000000	256QAM	-6.600	8	33.377
9	603000000	256QAM	-7.100	9	32.963
10	303000000	256QAM	-1.600	1	33.487
11	615000000	256QAM	-8.800	11	31.915
12	621000000	256QAM	-9.200	12	31.404
13	633000000	256QAM	-9.500	13	31.335
14	639000000	256QAM	-9.200	14	31.689
15	645000000	256QAM	-8.900	15	31.994
16	651000000	256QAM	-8.400	16	32.237
17	657000000	256QAM	-7.700	17	32.963
18	663000000	256QAM	-7.500	18	33.487
19	669000000	256QAM	-7.300	19	33.487
20	675000000	256QAM	-6.800	20	33.957
21	681000000	256QAM	-7.100	21	33.834
22	687000000	256QAM	-8.200	22	33.063
23	693000000	256QAM	-8.800	23	32.963
24	699000000	256QAM	-9.700	24	32.585
25	705000000	256QAM	-10.100	25	32.321
26	711000000	256QAM	-11.200	26	31.335
27	717000000	256QAM	-11.700	27	31.136
28	723000000	256QAM	-11.900	28	30.885
29	825000000	256QAM	-14.500	29	29.620
30	831000000	256QAM	-15.000	30	29.269
31	837000000	256QAM	-15.200	31	29.441
32	843000000	256QAM	-14.600	32	29.807

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	4K	290600000	YES	YES	YES	-2.700001

Upstream Overview

Port ID	Frequency (MHz)	Modulation	Signal strength (dBmV)	Channel ID	Bandwidth
1	30596000	ATDMA - 64QAM	37.250	1	6400000
2	38596000	ATDMA - 64QAM	41.750	3	3200000
3	23700000	ATDMA - 64QAM	35.000	2	6400000

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

© 2017 Hitron Technologies Inc.. All rights reserved.

[gp-se]

---

@hiho wrote:

general sluggish internet

internet just dosnt seem to be up to par latly just wondering if maybe time for another tech visit 🙂

Port ID	Frequency (MHz)	Modulation	Signal strength (dBmV)	Channel ID	Signal noise ratio (dB)
1	609000000	256QAM	-8.300	10	32.321
2	849000000	256QAM	-14.400	2	30.154
3	855000000	256QAM	-13.500	3	30.824
4	861000000	256QAM	-13.000	4	31.136
5	579000000	256QAM	-6.500	5	33.063
6	585000000	256QAM	-5.500	6	33.487
7	591000000	256QAM	-5.500	7	33.487
8	597000000	256QAM	-6.600	8	33.377
9	603000000	256QAM	-7.100	9	32.963
10	303000000	256QAM	-1.600	1	33.487
11	615000000	256QAM	-8.800	11	31.915
12	621000000	256QAM	-9.200	12	31.404
13	633000000	256QAM	-9.500	13	31.335
14	639000000	256QAM	-9.200	14	31.689
15	645000000	256QAM	-8.900	15	31.994
16	651000000	256QAM	-8.400	16	32.237
17	657000000	256QAM	-7.700	17	32.963
18	663000000	256QAM	-7.500	18	33.487
19	669000000	256QAM	-7.300	19	33.487
20	675000000	256QAM	-6.800	20	33.957
21	681000000	256QAM	-7.100	21	33.834
22	687000000	256QAM	-8.200	22	33.063
23	693000000	256QAM	-8.800	23	32.963
24	699000000	256QAM	-9.700	24	32.585
25	705000000	256QAM	-10.100	25	32.321
26	711000000	256QAM	-11.200	26	31.335
27	717000000	256QAM	-11.700	27	31.136
28	723000000	256QAM	-11.900	28	30.885
29	825000000	256QAM	-14.500	29	29.620
30	831000000	256QAM	-15.000	30	29.269
31	837000000	256QAM	-15.200	31	29.441
32	843000000	256QAM	-14.600	32	29.807

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	4K	290600000	YES	YES	YES	-2.700001

Upstream Overview

Port ID	Frequency (MHz)	Modulation	Signal strength (dBmV)	Channel ID	Bandwidth
1	30596000	ATDMA - 64QAM	37.250	1	6400000
2	38596000	ATDMA - 64QAM	41.750	3	3200000
3	23700000	ATDMA - 64QAM	35.000	2	6400000

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

© 2017 Hitron Technologies Inc.. All rights reserved.

---

@hiho

Call Rogers tech support, there is a serious issue with your line. Spec is -10 to +10, and SNR should be around 38-40

Ask the tech to check the signal levels, they should fail right away, ask them to check your neighbours incase it's a neighbourhood issue.

[hiho]

Dang i was afraid of that a few months back i just finished a 1 1/2 yr battle with rogers about bad signal issues that was finally fix something to do starting at the tap and back to somewhere 🙂 and lately i am starting to see some of the same probs that i had before but i wanted to check here about my sig before laying in the supplies for what maybe the long haul once again with rogers..

Thanks for confirming that there is something wonky going on but who knows maybe its the new fangle coda white modem or something simple like that i hope.

[gp-se]

@hiho

---

@hiho wrote:

Dang i was afraid of that a few months back i just finished a 1 1/2 yr battle with rogers about bad signal issues that was finally fix something to do starting at the tap and back to somewhere 🙂 and lately i am starting to see some of the same probs that i had before but i wanted to check here about my sig before laying in the supplies for what maybe the long haul once again with rogers..

Thanks for confirming that there is something wonky going on but who knows maybe its the new fangle coda white modem or something simple like that i hope.

---

Call up Rogers, they don't monitor signal levels, so you need to call in so they can check your area. Swapping Modems won't make any change, you need a tech visit to correct the signal levels.

Hopefully they fix the issue fast, 1 1/2 years is a long battle ... lol

[fguan]

Abnormal downstream power level

I just switched to 500u and I'm not impressed.  Did I get a bad modem or I need a tech visit to my apartment?  Thank you.

DOCSIS WAN

This menu displays both upstream and downstream signal parameters

DOCSIS Overview

Network Access	Permitted
IP Address
Subnet Mask
Gateway IP Address
DHCP Lease Time

Downstream Overview

Port ID	Frequency (MHz)	Modulation	Signal strength (dBmV)	Channel ID	Signal noise ratio (dB)
1	591000000	256QAM	7.800	7	40.366
2	855000000	256QAM	8.300	3	40.366
3	861000000	256QAM	8.400	4	40.366
4	579000000	256QAM	8.000	5	40.366
5	585000000	256QAM	8.000	6	40.366
6	849000000	256QAM	8.200	2	40.366
7	597000000	256QAM	8.200	8	40.366
8	603000000	256QAM	7.900	9	40.946
9	609000000	256QAM	8.400	10	40.946
10	615000000	256QAM	8.100	11	40.366
11	621000000	256QAM	8.800	12	40.946
12	633000000	256QAM	8.800	13	40.366
13	639000000	256QAM	8.600	14	40.366
14	645000000	256QAM	8.700	15	40.946
15	651000000	256QAM	8.800	16	40.946
16	657000000	256QAM	8.800	17	40.946
17	663000000	256QAM	8.600	18	40.366
18	669000000	256QAM	8.700	19	40.366
19	675000000	256QAM	8.500	20	40.946
20	681000000	256QAM	8.500	21	40.366
21	687000000	256QAM	8.500	22	40.366
22	693000000	256QAM	8.400	23	40.366
23	699000000	256QAM	8.400	24	40.946
24	705000000	256QAM	8.100	25	40.366
25	711000000	256QAM	8.300	26	40.366
26	717000000	256QAM	7.700	27	40.366
27	723000000	256QAM	8.000	28	40.366
28	825000000	256QAM	7.600	29	38.983
29	831000000	256QAM	7.800	30	40.366
30	837000000	256QAM	8.000	31	40.366
31	843000000	256QAM	8.100	32	40.366
32	303000000	256QAM	7.800	1	40.366

OFDM Downstream Overview

Receiver	FFT type	Subcarr 0 Frequency(MHz)	PLC locked	NCP locked	MDC1 locked	PLC power(dBmv)
0	4K	275600000	YES	YES	YES	8.199997
1	NA	NA	NO	NO	NO	NA

Upstream Overview

Port ID	Frequency (MHz)	Modulation	Signal strength (dBmV)	Channel ID	Bandwidth
1	38595785	ATDMA - 64QAM	35.750	6	3200000
2	30596000	ATDMA - 64QAM	33.500	4	6400000
3	23700000	ATDMA - 64QAM	33.500	5	6400000

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

***Edited***

Removed IP info

[RogersShaun]

Hi @fguan,

Welcome to the Community Forums, and thanks for your post!  

I'm sad to hear you're not too impressed with your recent upgrade, but you've definitely come to the right place for support.  Our Resident Experts @gp-se @Datalink and @Gdkitty have been a wealth of information in this thread, and are awesome in general! Perhaps they can suggest some guidance? 

If you'd like us to access your account to take a closer look, please send us a private message at @CommunityHelps next time you're online. Our private messaging system is explained in this blog.

RogersShaun

[fguan]

Thanks Shaun, I PMed my account number to @CommunityHelps for a closer look.  Here is a speed test result shows the drop of the speed happened in the middle of the test.  TiP Measurement Summary:: Min 13.16 Mbps | Middle Avg 116.15 Mbps | Max 184.06 Mbps | 173% Variance.  testmy.net/db/lpbPJkVET

[fguan]

Signal test, ping test, and high utilization test all came back fine. What else should I look into? 

I still see significant fluctuations in every single speed test and I can feel it when I watch youtube or even browse the web, I sometimes have to refresh the page in order to continue.  

My highs can reach 5xx.xx Mbps but the lows in between the peaks are 1x.xx Mbps to 3x.xx.  see http://testmy.net/db/jbCrDmckI

[inker]

How is this looking?

Someone tell me if you see issues 

Downstream Overview
Port ID Frequency (MHz) Modulation Signal strength (dBmV) Channel ID Signal noise ratio (dB)
1 597000000 256QAM 2.600 8 40.366
2 579000000 256QAM 2.000 5 40.946
3 585000000 256QAM 2.200 6 40.366
4 591000000 256QAM 2.300 7 40.366
5 303000000 256QAM -0.700 1 38.605
6 603000000 256QAM 2.800 9 40.366
7 609000000 256QAM 2.900 10 40.946
8 615000000 256QAM 2.800 11 40.366
9 621000000 256QAM 2.600 12 40.366
10 633000000 256QAM 2.500 13 40.366
11 639000000 256QAM 2.700 14 40.366
12 645000000 256QAM 2.700 15 40.366
13 651000000 256QAM 3.000 16 40.946
14 657000000 256QAM 3.200 17 40.366
15 663000000 256QAM 3.300 18 40.946
16 669000000 256QAM 3.000 19 40.366
17 675000000 256QAM 3.500 20 40.366
18 681000000 256QAM 3.400 21 40.366
19 687000000 256QAM 3.600 22 40.366
20 693000000 256QAM 3.000 23 40.366
21 699000000 256QAM 3.600 24 40.366
22 705000000 256QAM 3.500 25 40.366
23 711000000 256QAM 4.300 26 40.946
24 717000000 256QAM 4.000 27 40.366
25 723000000 256QAM 4.600 28 39.900
26 825000000 256QAM 2.800 29 39.500
27 831000000 256QAM 2.200 30 39.900
28 837000000 256QAM 2.300 31 39.500
29 843000000 256QAM 1.500 32 39.900
30 849000000 256QAM 2.100 2 39.500
31 855000000 256QAM 2.000 3 39.500
32 861000000 256QAM 2.100 4 39.500
Upstream Overview
Port ID Frequency (MHz) Modulation Signal strength (dBmV) Channel ID Bandwidth
1 23700000 ATDMA - 64QAM 42.500 2 6400000
2 38596000 ATDMA - 64QAM 42.750 3 3200000
3 30596000 ATDMA - 64QAM 42.750 1 6400000

[Gdkitty]

That generally looks pretty good, should be no issues.

(only weird anomaly is #5, which for some reason is a neg signal when all the rest are positive in that range)

Which modem is that?  It should have the other listings as signal as well?
The OFDM.

[inker]

CGNM modem hitron 

[inker]

My package is 250/20. Prior to a week ago day and night I would get consistent 90’s down and solid 20 up.
Then starting mid afternoon until midnight my upload only tanks to about 4-6 up. Ping and jiter tank too.
I switched modem at request of tech support, the issues continue. My test methods are on all my platforms, wired and wireless.
Strong argument on my end is that prior to a week ago, I never had swings, no lag, very good ping times.
It was discovered when I had unnormal lag in my gaming, started a week ago.

[Gdkitty]

That sounds more like a local node issue.

That as it starts getting busier, the node is not able to handle it.

Either an area oversold?
Or that something is failing/not able to handle the stress of the load.

[inker]

Hopefully they see it 

[anyad]

Got 500u plan, but only getting sub 200Mbit.....

Alright so I used to have ignite 250, and I got around 300 downstream using the black hitron modem.

Now I upped to the 500, and when i go to speedtest I get 600 initially, then it rapidly drops down to 150~200....what gives?

Also let me give some info:

Hitron Coda 4582, using hardwired ethernet into laptop with gigabit ethernet card so no bottlenecks on my computers end.

What could be the issue?

Also interestingly once in a while I get a 600Mbit measurement but ONLY if I use the Rogers Toronto server on the Ookla speedtest site, and even then it's not always consistent.

Now the other change I made was I got a 4k nextbox which splits off of the same coax as the router? Could that be the issue??

I have attached the ranging tables.

Any other ideas? I run the modem in IPV4 only, but I also ran the old one in IPV4 solo mode as well so I don't think that would be it.

Thanks guys, looking forward to figuring this one out!

Port ID	Frequency (MHz)	Modulation	Signal strength (dBmV)	Channel ID	Signal noise ratio (dB)
1	591000000	256QAM	0.900	7	38.983
2	855000000	256QAM	0.000	3	38.983
3	861000000	256QAM	-0.400	4	38.983
4	579000000	256QAM	0.800	5	38.983
5	585000000	256QAM	1.000	6	38.983
6	849000000	256QAM	-0.200	2	38.983
7	597000000	256QAM	1.000	8	38.983
8	603000000	256QAM	1.100	9	38.605
9	609000000	256QAM	1.200	10	38.983
10	615000000	256QAM	1.500	11	38.983
11	621000000	256QAM	1.400	12	38.983
12	633000000	256QAM	1.700	13	38.605
13	639000000	256QAM	1.800	14	38.983
14	645000000	256QAM	1.800	15	38.983
15	651000000	256QAM	1.900	16	38.605
16	657000000	256QAM	1.700	17	40.366
17	663000000	256QAM	1.700	18	40.366
18	669000000	256QAM	1.600	19	40.366
19	675000000	256QAM	1.600	20	40.366
20	681000000	256QAM	1.200	21	38.983
21	687000000	256QAM	1.100	22	38.983
22	693000000	256QAM	0.500	23	38.605
23	699000000	256QAM	0.900	24	38.983
24	705000000	256QAM	0.300	25	38.983
25	711000000	256QAM	0.600	26	38.983
26	717000000	256QAM	0.200	27	38.605
27	723000000	256QAM	0.800	28	38.983
28	825000000	256QAM	0.600	29	38.983
29	831000000	256QAM	0.700	30	38.983
30	837000000	256QAM	0.500	31	38.983
31	843000000	256QAM	0.400	32	38.983
32	303000000	256QAM	1.700	1	38.983

OFDM Downstream Overview

Receiver	FFT type	Subcarr 0 Frequency(MHz)	PLC locked	NCP locked	MDC1 locked	PLC power(dBmv)
0	4K	275600000	YES	YES	YES	2.500000
1	NA	NA	NO	NO	NO	NA

Upstream Overview

Port ID	Frequency (MHz)	Modulation	Signal strength (dBmV)	Channel ID	Bandwidth
1	13700000	ATDMA - 64QAM	33.250	4	6400000
2	30596000	ATDMA - 64QAM	35.500	6	6400000
3	23700000	ATDMA - 64QAM	35.500	5	6400000

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

[gp-se]

---

@anyad wrote:

Got 500u plan, but only getting sub 200Mbit.....

Alright so I used to have ignite 250, and I got around 300 downstream using the black hitron modem.

Now I upped to the 500, and when i go to speedtest I get 600 initially, then it rapidly drops down to 150~200....what gives?

Also let me give some info:

Hitron Coda 4582, using hardwired ethernet into laptop with gigabit ethernet card so no bottlenecks on my computers end.

What could be the issue?

Also interestingly once in a while I get a 600Mbit measurement but ONLY if I use the Rogers Toronto server on the Ookla speedtest site, and even then it's not always consistent.

Now the other change I made was I got a 4k nextbox which splits off of the same coax as the router? Could that be the issue??

I have attached the ranging tables.

Any other ideas? I run the modem in IPV4 only, but I also ran the old one in IPV4 solo mode as well so I don't think that would be it.

Thanks guys, looking forward to figuring this one out!

Port ID	Frequency (MHz)	Modulation	Signal strength (dBmV)	Channel ID	Signal noise ratio (dB)
1	591000000	256QAM	0.900	7	38.983
2	855000000	256QAM	0.000	3	38.983
3	861000000	256QAM	-0.400	4	38.983
4	579000000	256QAM	0.800	5	38.983
5	585000000	256QAM	1.000	6	38.983
6	849000000	256QAM	-0.200	2	38.983
7	597000000	256QAM	1.000	8	38.983
8	603000000	256QAM	1.100	9	38.605
9	609000000	256QAM	1.200	10	38.983
10	615000000	256QAM	1.500	11	38.983
11	621000000	256QAM	1.400	12	38.983
12	633000000	256QAM	1.700	13	38.605
13	639000000	256QAM	1.800	14	38.983
14	645000000	256QAM	1.800	15	38.983
15	651000000	256QAM	1.900	16	38.605
16	657000000	256QAM	1.700	17	40.366
17	663000000	256QAM	1.700	18	40.366
18	669000000	256QAM	1.600	19	40.366
19	675000000	256QAM	1.600	20	40.366
20	681000000	256QAM	1.200	21	38.983
21	687000000	256QAM	1.100	22	38.983
22	693000000	256QAM	0.500	23	38.605
23	699000000	256QAM	0.900	24	38.983
24	705000000	256QAM	0.300	25	38.983
25	711000000	256QAM	0.600	26	38.983
26	717000000	256QAM	0.200	27	38.605
27	723000000	256QAM	0.800	28	38.983
28	825000000	256QAM	0.600	29	38.983
29	831000000	256QAM	0.700	30	38.983
30	837000000	256QAM	0.500	31	38.983
31	843000000	256QAM	0.400	32	38.983
32	303000000	256QAM	1.700	1	38.983

OFDM Downstream Overview

Receiver	FFT type	Subcarr 0 Frequency(MHz)	PLC locked	NCP locked	MDC1 locked	PLC power(dBmv)
0	4K	275600000	YES	YES	YES	2.500000
1	NA	NA	NO	NO	NO	NA

Upstream Overview

Port ID	Frequency (MHz)	Modulation	Signal strength (dBmV)	Channel ID	Bandwidth
1	13700000	ATDMA - 64QAM	33.250	4	6400000
2	30596000	ATDMA - 64QAM	35.500	6	6400000
3	23700000	ATDMA - 64QAM	35.500	5	6400000

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

---

@anyad

Signal levels look really good, have you tired running the speed tests during non-peak hours? It could be congestion causing your slow speeds. Are you able to get your max upload speed on the speed tests?