CAX80 can't upload 5GHZ

Star

Nov 04, 2021

Cable Diagnostic

Status: Good

Action: Your setup looks fine. If you are still experience an internet issue, the Netgear Cable Knowledge Base can provide additional troubleshooting info.

Internet Access:

Downstream Status:

Upstream Status:

Refresh Save Cable Diagnostic Info

Advanced Information

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

Startup Procedure

Procedure	Status	Comment
Acquire Downstream Channel	645 MHz	Locked
Connectivity State	OK	Operational
Boot State	OK	Operational
Security	Enabled	BPI+

Downstream Bonded Channels

Channel	Lock Status	Modulation	Channel ID	Frequency	Power	SNR	Correctables	Uncorrectables
1	Locked	256 QAM	36	645000000 Hz	4.7 dBmV	45.5 dB	0	0
2	Locked	256 QAM	9	471000000 Hz	4.0 dBmV	45.9 dB	0	0
3	Locked	256 QAM	10	477000000 Hz	4.0 dBmV	45.7 dB	0	0
4	Locked	256 QAM	11	483000000 Hz	4.1 dBmV	45.8 dB	0	0
5	Locked	256 QAM	12	489000000 Hz	4.2 dBmV	45.7 dB	0	0
6	Locked	256 QAM	13	495000000 Hz	3.9 dBmV	45.5 dB	0	0
7	Locked	256 QAM	14	507000000 Hz	4.3 dBmV	45.8 dB	0	0
8	Locked	256 QAM	15	513000000 Hz	4.0 dBmV	44.6 dB	0	0
9	Locked	256 QAM	16	519000000 Hz	4.0 dBmV	38.2 dB	0	0
10	Locked	256 QAM	17	525000000 Hz	4.3 dBmV	42.2 dB	0	0
11	Locked	256 QAM	18	531000000 Hz	4.0 dBmV	43.0 dB	0	0
12	Locked	256 QAM	19	537000000 Hz	4.4 dBmV	44.4 dB	0	0
13	Locked	256 QAM	20	543000000 Hz	4.3 dBmV	45.4 dB	0	0
14	Locked	256 QAM	21	555000000 Hz	4.3 dBmV	42.1 dB	0	0
15	Locked	256 QAM	22	561000000 Hz	4.6 dBmV	36.4 dB	0	0
16	Locked	256 QAM	23	567000000 Hz	4.3 dBmV	41.0 dB	0	0
17	Locked	256 QAM	24	573000000 Hz	4.4 dBmV	39.3 dB	0	0
18	Locked	256 QAM	25	579000000 Hz	4.4 dBmV	43.1 dB	0	0
19	Locked	256 QAM	26	585000000 Hz	4.9 dBmV	45.7 dB	0	0
20	Locked	256 QAM	27	591000000 Hz	5.0 dBmV	45.8 dB	0	0
21	Locked	256 QAM	28	597000000 Hz	5.2 dBmV	45.9 dB	0	0
22	Locked	256 QAM	29	603000000 Hz	4.9 dBmV	45.8 dB	0	0
23	Locked	256 QAM	30	609000000 Hz	5.3 dBmV	45.9 dB	0	0
24	Locked	256 QAM	31	615000000 Hz	5.1 dBmV	45.8 dB	0	0
25	Locked	256 QAM	32	621000000 Hz	5.1 dBmV	45.6 dB	0	0
26	Locked	256 QAM	33	627000000 Hz	5.2 dBmV	45.1 dB	0	0
27	Locked	256 QAM	34	633000000 Hz	5.0 dBmV	44.8 dB	0	0
28	Locked	256 QAM	35	639000000 Hz	4.8 dBmV	45.2 dB	0	0
29	Locked	256 QAM	37	651000000 Hz	4.5 dBmV	45.3 dB	0	0
30	Locked	256 QAM	38	657000000 Hz	4.3 dBmV	45.2 dB	0	0
31	Locked	256 QAM	39	663000000 Hz	4.4 dBmV	45.2 dB	0	0
32	Locked	256 QAM	40	669000000 Hz	4.2 dBmV	44.7 dB	0	0

Upstream Bonded Channels

Channel	Lock Status	US Channel Type	Channel ID	Symbol Rate	Frequency	Power
1	Locked	ATDMA	2	5120 Ksym/sec	29200000 Hz	42.0 dBmV
2	Locked	ATDMA	1	5120 Ksym/sec	35600000 Hz	42.0 dBmV
3	Locked	ATDMA	3	5120 Ksym/sec	22800000 Hz	41.8 dBmV
4	Locked	ATDMA	4	5120 Ksym/sec	16400000 Hz	41.8 dBmV
5	Not Locked	Unknown	0	0	0	0.0 dBmV
6	Not Locked	Unknown	0	0	0	0.0 dBmV
7	Not Locked	Unknown	0	0	0	0.0 dBmV
8	Not Locked	Unknown	0	0	0	0.0 dBmV

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	193	690000000 Hz	3.68 dBmV	44.1 dB	1228 ~ 2867	4057813	576682	0
2	Not Locked	0	0	0 Hz	0 dBmV	0 dB	0 ~ 4095	0	0	0

Upstream OFDMA Channels

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

Extended Upstream Transmit Power

Enable Extended Upstream Transmit Power

Current System Time:Thu Nov 04 13:49:23 2021

System Up Time:00:12:00

AlexanderSextus
Star
Nov 04, 2021
Here are my speedtests...
I'm with Xfinity, my plan is 1200 Down & 35 Up

5G - Upload Spikes to 9Mbps then drops... ive even seen it settle @ 1.5Mbps.
DOWNLOAD Mbps
409.81
UPLOAD Mbps
3.98

2.4G
DOWNLOAD Mbps
79.96
UPLOAD Mbps
15.92

HARDWIRED
DOWNLOAD Mbps
923.67
UPLOAD Mbps
41.73
AlexanderSextus
Star
Nov 08, 2021
I had comcast send out a tech. We replaced teh Cable comming into my unit and still have issues. The problem here is with Netgear. And support is AWEFUL. Had to call multiple times and was told i would get a call back from higher level support and nothing.

I've never seen anything like this before and i've ALWAYS used netgear routers. Very disapointed.

for whatever its worth, the tech told me that he saw "FM noise", he was forign so his accent was a bit strong and i count exactly understand but he sure said noise and that the issue lies with teh unit.

what are the chances of having 2 bad systems? Im going to best buy to return this unit and get a 3rd... fingers crossed.
FURRYe38
Guru - Experienced User
Nov 08, 2021
I'll see if someone at NG can review this. Not sure what FM Noise means. FM doesn't run anywhere near 5Ghz.

vkdelta
AlexanderSextus
Star
Nov 08, 2021
just to put my concerns to rest i went back to bestbuy and bought another CAX80... same issue.
NO IDEA what is going on here. Comcast is 100% good from teh tap to my home teh problem is with teh router, perhaps there is a setting that needs to altered. Im exhausted with this.
FURRYe38
Guru - Experienced User
Nov 08, 2021
What is the brand and model# of these wifi adapters in the computers your using?

Have the drivers for these wifi adapters been updated?

Wondering if there is a problem between the CAX wifi and your wifi adapters.
AlexanderSextus
Star
Nov 08, 2021
I only have apple products.

2017 imac, and 2017 macbook pro all running latest macOS

I did have the issue on a windows 10 computer as well.
FURRYe38
Guru - Experienced User
Nov 08, 2021
What is the brand and model of the wifi adapter on the Windows PC?

Ok. I guess I should try my CAX80 in router mode and see if my Mac Book Pro 2018 sees same thing.

What are the current wifi settings set for on the CAX?

Smart Connect enabled or disabled?

Channels being used?

WMM enabled or disabled?

Any Implicit Beamforming and MIMO enabled or disabled?

Forum Discussion