What can I do about this on my home network?
Signal levels have been increasing over several weeks to the point now where all of the channels are our of spec.
Nothing has changed inside my home. There are two splitters in the line. They have been there for over a year and have not been touched since installed.
ANTRONIX ®
2-WAY SPLITTER 5-1002MHz CMC2002H-A
-3.5dB OUT
-3.5dB OUT
My owned modem = Netgear Nighthawk CM3000
Firmware = V6.01.04
Cable Diagnostic
Status: Poor
Action:
CM Status:
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.
Startup Procedure
Procedure
Status
Comment
Acquire Downstream Channel
411000000 Hz
Locked
Connectivity State
OK
Operational
Boot State
OK
Operational
Security
Enabled
BPI+
IP Provisioning Mode
Honor MDD
IPv6 only
Downstream Bonded Channels
Channel
Lock Status
Modulation
Channel ID
Frequency
Power
SNR
Correctables
Uncorrectables
1
Locked
QAM256
4
411000000 Hz
13.1 dBmV
38.3 dB
741
0
2
Locked
QAM256
1
393000000 Hz
12.8 dBmV
38.3 dB
418
0
3
Locked
QAM256
2
399000000 Hz
13.0 dBmV
38.4 dB
517
0
4
Locked
QAM256
3
405000000 Hz
13.0 dBmV
38.4 dB
621
0
5
Locked
QAM256
5
417000000 Hz
13.3 dBmV
38.3 dB
872
0
6
Locked
QAM256
6
423000000 Hz
13.0 dBmV
38.3 dB
1044
0
7
Locked
QAM256
7
435000000 Hz
13.2 dBmV
38.2 dB
1301
0
8
Locked
QAM256
8
441000000 Hz
13.0 dBmV
38.2 dB
1507
0
9
Locked
QAM256
9
447000000 Hz
13.3 dBmV
38.3 dB
1805
0
10
Locked
QAM256
10
453000000 Hz
13.4 dBmV
38.3 dB
1957
0
11
Locked
QAM256
11
459000000 Hz
13.4 dBmV
38.4 dB
2003
0
12
Locked
QAM256
12
465000000 Hz
13.6 dBmV
38.3 dB
2535
0
13
Locked
QAM256
13
471000000 Hz
13.4 dBmV
38.1 dB
3202
0
14
Locked
QAM256
14
477000000 Hz
13.6 dBmV
38.1 dB
3741
0
15
Locked
QAM256
15
483000000 Hz
13.6 dBmV
38.0 dB
4453
0
16
Locked
QAM256
16
489000000 Hz
13.1 dBmV
37.9 dB
5210
0
17
Locked
QAM256
17
495000000 Hz
13.1 dBmV
37.8 dB
6745
0
18
Locked
QAM256
18
507000000 Hz
12.6 dBmV
37.6 dB
10206
0
19
Locked
QAM256
19
513000000 Hz
12.9 dBmV
37.6 dB
10658
0
20
Locked
QAM256
20
519000000 Hz
12.9 dBmV
37.6 dB
11139
0
21
Locked
QAM256
21
525000000 Hz
12.9 dBmV
37.5 dB
12232
0
22
Locked
QAM256
22
531000000 Hz
13.2 dBmV
37.3 dB
14025
0
23
Locked
QAM256
23
537000000 Hz
12.9 dBmV
37.4 dB
16868
0
24
Locked
QAM256
24
543000000 Hz
12.8 dBmV
37.1 dB
18769
0
25
Locked
QAM256
25
549000000 Hz
12.4 dBmV
37.0 dB
22756
0
26
Locked
QAM256
26
555000000 Hz
12.1 dBmV
36.9 dB
29146
0
27
Locked
QAM256
27
561000000 Hz
12.1 dBmV
36.9 dB
36428
0
28
Locked
QAM256
28
567000000 Hz
12.0 dBmV
36.6 dB
43109
0
29
Locked
QAM256
29
573000000 Hz
12.1 dBmV
36.5 dB
51601
0
30
Locked
QAM256
30
579000000 Hz
12.2 dBmV
36.5 dB
60578
0
31
Locked
QAM256
31
585000000 Hz
11.9 dBmV
36.5 dB
70438
0
32
Locked
QAM256
32
591000000 Hz
12.0 dBmV
36.5 dB
76208
0
Upstream Bonded Channels
Channel
Lock Status
US Channel Type
Channel ID
Symbol Rate
Frequency
Power
1
Locked
ATDMA
5
2560 Ksym/sec
40400000 Hz
38.8 dBmV
2
Locked
ATDMA
2
5120 Ksym/sec
22800000 Hz
35.8 dBmV
3
Locked
ATDMA
3
5120 Ksym/sec
29200000 Hz
35.8 dBmV
4
Locked
ATDMA
4
5120 Ksym/sec
35600000 Hz
36.5 dBmV
5
Locked
ATDMA
1
5120 Ksym/sec
16400000 Hz
35.8 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
Profile ID
Channel ID
Frequency
Power
SNR / MER
Active Subcarrier
Unerrored
Correctable
Uncorrectable
1
Locked
0 ,1 ,2 ,3
193
672000000 Hz
10.48 dBmV
34.3 dB
1108 ~ 2987
1690853036
1593696019
108
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
Current System Time:Sat Oct 10 07:58:24 2026
System Up Time:1 day 01:38:11
EG
Expert
•
122K Messages
11 hours ago
First. Are you actually experiencing any connection/droput problems ?
1
0