I've been troubleshooting my inconsistent internet speeds with Comcast support for the last 3 weeks. They have not been very helpful and have told me that the issue must be with my modem/router or with the line in my house. I have a line tester and there are no shorts on my end. Comcast won't send a technician unless there is an outage in the area.
Based on what I've read on this forum, I've eliminated any splitters and connectors that are not needed. I have a signal booster connected outside directly connected to my feed from Comcast. It's a two-way splitter/booster. One outline connects directly to my Modem/router and the other connects directly to my Comcast cable box.
My Equipment: Netgear Orbi CBR40 with 2 satellites (RBS20 and RBS50). Signal booster is an Arris BDA-42-2-PR-R
My service is for 200Mbps but I'm getting speeds all over the place. (see image) If I do a reboot the signal will improve for a short time but eventually slows down to less than 10Mbps.



Downstream Bonded Channels |
Channel |
Lock Status |
Modulation |
Channel ID |
Frequency |
Power |
SNR |
Correctables |
Uncorrectable |
1 |
Locked |
QAM 256 |
1 |
381000000 Hz |
11.4 dBmV |
38.6 dB |
69 |
0 |
2 |
Locked |
QAM 256 |
2 |
387000000 Hz |
11.0 dBmV |
38.9 dB |
89 |
0 |
3 |
Locked |
QAM 256 |
3 |
393000000 Hz |
10.8 dBmV |
38.9 dB |
90 |
0 |
4 |
Locked |
QAM 256 |
4 |
399000000 Hz |
10.0 dBmV |
38.9 dB |
61 |
0 |
5 |
Locked |
QAM 256 |
5 |
405000000 Hz |
9.1 dBmV |
38.6 dB |
57 |
0 |
6 |
Locked |
QAM 256 |
6 |
411000000 Hz |
7.9 dBmV |
37.6 dB |
114 |
39 |
7 |
Locked |
QAM 256 |
7 |
417000000 Hz |
6.8 dBmV |
37.6 dB |
175 |
33 |
8 |
Locked |
QAM 256 |
8 |
423000000 Hz |
6.5 dBmV |
37.3 dB |
2121614 |
167764 |
9 |
Locked |
QAM 256 |
9 |
453000000 Hz |
6.5 dBmV |
37.6 dB |
111 |
0 |
10 |
Locked |
QAM 256 |
10 |
459000000 Hz |
6.0 dBmV |
37.6 dB |
101 |
0 |
11 |
Locked |
QAM 256 |
11 |
465000000 Hz |
5.5 dBmV |
38.6 dB |
184 |
3 |
12 |
Locked |
QAM 256 |
12 |
471000000 Hz |
5.4 dBmV |
37.3 dB |
200 |
0 |
13 |
Locked |
QAM 256 |
13 |
477000000 Hz |
5.1 dBmV |
37.6 dB |
207 |
0 |
14 |
Locked |
QAM 256 |
14 |
483000000 Hz |
4.6 dBmV |
37.3 dB |
242 |
0 |
15 |
Locked |
QAM 256 |
15 |
489000000 Hz |
2.7 dBmV |
35.7 dB |
352 |
0 |
16 |
Locked |
QAM 256 |
16 |
495000000 Hz |
1.0 dBmV |
35.5 dB |
436 |
0 |
17 |
Locked |
QAM 256 |
17 |
519000000 Hz |
-3.2 dBmV |
31.6 dB |
7967214 |
2895181 |
18 |
Locked |
QAM 256 |
18 |
525000000 Hz |
-3.0 dBmV |
29.5 dB |
8140380 |
2101191 |
19 |
Locked |
QAM 256 |
19 |
531000000 Hz |
-1.0 dBmV |
32.3 dB |
4726208 |
1422954 |
20 |
Locked |
QAM 256 |
20 |
537000000 Hz |
1.4 dBmV |
33.0 dB |
2349611 |
202341 |
21 |
Locked |
QAM 256 |
21 |
543000000 Hz |
3.5 dBmV |
37.3 dB |
171 |
0 |
22 |
Locked |
QAM 256 |
22 |
549000000 Hz |
1.0 dBmV |
35.7 dB |
418 |
1118 |
23 |
Locked |
QAM 256 |
23 |
555000000 Hz |
-3.0 dBmV |
27.8 dB |
464502607 |
204514085 |
24 |
Locked |
QAM 256 |
24 |
561000000 Hz |
-6.5 dBmV |
26.9 dB |
143933751 |
205430788 |
25 |
Locked |
QAM 256 |
25 |
567000000 Hz |
-8.7 dBmV |
29.4 dB |
20601859 |
647871 |
26 |
Locked |
QAM 256 |
26 |
573000000 Hz |
-10.2 dBmV |
29.5 dB |
4154125 |
16775 |
27 |
Locked |
QAM 256 |
27 |
579000000 Hz |
-11.7 dBmV |
28.8 dB |
42150277 |
15973 |
28 |
Locked |
QAM 256 |
28 |
585000000 Hz |
-11.9 dBmV |
28.6 dB |
68675259 |
12504 |
29 |
Locked |
QAM 256 |
29 |
591000000 Hz |
-12.0 dBmV |
28.4 dB |
188515672 |
38435 |
30 |
Locked |
QAM 256 |
30 |
597000000 Hz |
-12.7 dBmV |
28.1 dB |
645911441 |
861313 |
31 |
Locked |
QAM 256 |
31 |
603000000 Hz |
-12.7 dBmV |
28.6 dB |
153100881 |
9840 |
32 |
Locked |
QAM 256 |
32 |
609000000 Hz |
-11.2 dBmV |
29.8 dB |
891974 |
35 |
|
|
Upstream Bonded Channels |
Channel |
Lock Status |
US Channel Type |
Channel ID |
Symbol Rate |
Frequency |
Power |
1 |
Locked |
ATDMA |
25 |
5120 Ksym/sec |
17300000 Hz |
41.8 dBmV |
2 |
Locked |
ATDMA |
26 |
5120 Ksym/sec |
23700000 Hz |
42.0 dBmV |
3 |
Locked |
ATDMA |
27 |
5120 Ksym/sec |
30100000 Hz |
42.5 dBmV |
4 |
Locked |
ATDMA |
28 |
5120 Ksym/sec |
36500000 Hz |
42.5 dBmV |
5 |
Not Locked |
N/A |
Unknown |
0 Ksym/sec |
0 Hz |
0.0 dBmV |
6 |
Not Locked |
N/A |
Unknown |
0 Ksym/sec |
0 Hz |
0.0 dBmV |
7 |
Not Locked |
N/A |
Unknown |
0 Ksym/sec |
0 Hz |
0.0 dBmV |
8 |
Not Locked |
N/A |
Unknown |
0 Ksym/sec |
0 Hz |
0.0 dBmV |
|
EG
Expert
•
111.4K Messages
4 years ago
Many of the downstream channels are borked. There is too much cable signal *tilt* (power level difference between the lowest and the highest frequencies), and many of the SNR's are too low / out of spec.
You should get the techs re-involved until it is fixed properly. Bear in mind that if the premises facing techs can not find or fix a problem at your home, it is they who are responsible for escalating it to their line / network / maintenance dept. techs. The problem may lie beyond your home in the local neighborhood infrastructure somewhere but it is their S.O.P. to start at the home.
Good luck !
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0
EverydayJoe
New Poster
•
5 Messages
4 years ago
After hours on the phone with Comcast support, they finally sent a technician out. The line feeding my house was bad...BIG Surprise!
I just want to point this out for everyone else who spends time jumping thru hoops with Comcast customer service. Don't give up! It's taken me a month of weekly calls and Comcast pointing the finger at my internal connections and my Netgear Orbi Modem/Router. They told me several times that I needed to purchase/rent an Xfinity modem for $14.99 a month to resolve the issue. Terrible, just plain terrible.
That being said, I'm now getting speeds of 200-210Mbps without the need for a signal booster!
Here are my new connection numbers. Thanks to everyone that posts here and hopefully Comcast reads these posts to improve their service SOPs.
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0
EG
Expert
•
111.4K Messages
4 years ago
There's still a little bit of tilt there but it is much much better ! Hope things hold up for you. Good luck !
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