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Slow speed, blinking DS/US light on Netgear C7100V

Frequent Visitor

Slow speed, blinking DS/US light on Netgear C7100V

Hello community, 

 

Over the past several days, I noticed drastically reduced internet speeds: mid-30's mbps. I'm on the 400 speed tier, and could reliably reach 300+ mbps on hard wired devices. I use a personal Netgear C7100V. Under normal setup, the connection routes through a splitter and a wall outlet to the modem, everything with compression fittings.

 

Decided today to take a harder look and noticed that the DS/US light was blinking on the device. I took all of the following steps:

1. Rebooted device. Result: Speed still slow, DS/US still blinks. 

2. Checked all the connections, nothing was loose. 

3.  Moved the modem and connected it directly to the coax line coming into the house. Waited for the modem to fully boot. Also connected my laptop via hardwire to the modem. Result: Speed still low, DS/US still blinks

4. Did a full factory reboot on the device, still directly connected. Result: No change. 

 

Logged into the modem, and I see the following: 

<tabindex=-1>Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
1 Locked QAM256 5 495000000 Hz -0.9 dBmV 43.0 dB 0 0
2 Locked QAM256 1 471000000 Hz -1.1 dBmV 43.2 dB 0 0
3 Locked QAM256 2 477000000 Hz -1.1 dBmV 43.3 dB 0 0
4 Locked QAM256 3 483000000 Hz -1.0 dBmV 43.1 dB 0 0
5 Locked QAM256 4 489000000 Hz -1.1 dBmV 43.1 dB 0 0
6 Locked QAM256 6 507000000 Hz -0.7 dBmV 39.5 dB 0 0
7 Locked QAM256 7 513000000 Hz -0.7 dBmV 43.4 dB 0 0
8 Locked QAM256 8 519000000 Hz -0.9 dBmV 30.2 dB 0 0
9 Locked QAM256 9 525000000 Hz -0.9 dBmV 31.9 dB 0 0
10 Locked QAM256 10 531000000 Hz -0.9 dBmV 39.2 dB 0 0
11 Locked QAM256 11 537000000 Hz -0.5 dBmV 43.2 dB 0 0
12 Locked QAM256 12 543000000 Hz -0.3 dBmV 43.3 dB 0 0
13 Locked QAM256 13 549000000 Hz -0.4 dBmV 43.1 dB 0 0
14 Locked QAM256 14 555000000 Hz -0.3 dBmV 43.1 dB 0 0
15 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
16 Locked QAM256 16 567000000 Hz -0.6 dBmV 33.2 dB 4262 0
17 Locked QAM256 17 573000000 Hz -1.1 dBmV 42.5 dB 0 0
18 Locked QAM256 18 579000000 Hz -1.2 dBmV 39.9 dB 0 0
19 Locked QAM256 19 585000000 Hz -1.5 dBmV 41.4 dB 0 0
20 Locked QAM256 20 591000000 Hz -1.6 dBmV 39.0 dB 0 0
21 Locked QAM256 21 597000000 Hz -2.0 dBmV 38.6 dB 0 0
22 Locked QAM256 22 603000000 Hz -1.8 dBmV 40.4 dB 0 0
23 Locked QAM256 23 609000000 Hz -1.4 dBmV 41.9 dB 0 0
24 Locked QAM256 24 615000000 Hz -1.2 dBmV 41.9 dB 0 0

<tabindex=-1>Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 3 5120 Ksym/sec 25000000 Hz 46.8 dBmV
2 Locked ATDMA 1 5120 Ksym/sec 37800000 Hz 46.8 dBmV
3 Locked ATDMA 2 5120 Ksym/sec 31400000 Hz 46.8 dBmV
4 Locked ATDMA 4 5120 Ksym/sec 18600000 Hz 46.8 dBmV
5 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
6 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
7 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
8 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV

 

Knowing nothing much about how to judge this, it's obvious there's an issue on channel 15 and the power starts sliding on channel 11. 

 

I haven't spoken to Comcast yet, nor had a tech out. I moved into this house in August, at when the tech came out at that time to setup the service, he did note some signal issues.  However, I haven't seen a problem since moving in. 

That the issue occurs even when directly connected to the line into the house makes me think that the problem might be exterior, but wanted to get a community take before calling support and/or chasing my tail any further. 

 

Expert

Re: Slow speed, blinking DS/US light on Netgear C7100V

Yes. Something is up with channel 15 not locking but it only one single carrier and there is much redundancy of the downstrream channels. And FWIW I would hardly call a 1 to 2 dB difference in the power levels as "sliding". There are no uncorrectable errors which is good. Can you please also post the event / error log entries so that we may have a more complete picture of what is going on.

 

Are the US and the DS lights blinking in unison or are they blinking alternately ?

 

There is also low SNR on channel 9 and 16 but there are no uncorrectable errors.



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Frequent Visitor

Re: Slow speed, blinking DS/US light on Netgear C7100V

Thanks for the reply! On the C7100V, there is a single light for DS/US, and it is a consistent blinking.  Here are the current numbers on the channels (logs follow):

<tabindex=-1>Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
1 Locked QAM256 5 495000000 Hz -1.1 dBmV 42.8 dB 0 0
2 Locked QAM256 1 471000000 Hz -1.3 dBmV 42.9 dB 0 0
3 Locked QAM256 2 477000000 Hz -1.3 dBmV 43.0 dB 0 0
4 Locked QAM256 3 483000000 Hz -1.2 dBmV 42.9 dB 0 0
5 Locked QAM256 4 489000000 Hz -1.3 dBmV 42.8 dB 0 0
6 Locked QAM256 6 507000000 Hz -1.0 dBmV 39.3 dB 0 0
7 Locked QAM256 7 513000000 Hz -0.9 dBmV 43.1 dB 0 0
8 Locked QAM256 8 519000000 Hz -1.1 dBmV 30.6 dB 28 0
9 Locked QAM256 9 525000000 Hz -1.1 dBmV 31.7 dB 0 0
10 Locked QAM256 10 531000000 Hz -1.1 dBmV 38.8 dB 0 0
11 Locked QAM256 11 537000000 Hz -0.7 dBmV 42.9 dB 0 0
12 Locked QAM256 12 543000000 Hz -0.5 dBmV 43.0 dB 0 0
13 Locked QAM256 13 549000000 Hz -0.6 dBmV 42.8 dB 0 0
14 Locked QAM256 14 555000000 Hz -0.6 dBmV 42.8 dB 0 0
15 Not Locked Unknown 0 0 Hz 0.0 dBmV 0.0 dB 0 0
16 Locked QAM256 16 567000000 Hz -0.8 dBmV 33.4 dB 134655 514
17 Locked QAM256 17 573000000 Hz -1.4 dBmV 41.9 dB 0 0
18 Locked QAM256 18 579000000 Hz -1.5 dBmV 39.5 dB 0 0
19 Locked QAM256 19 585000000 Hz -1.8 dBmV 40.6 dB 0 0
20 Locked QAM256 20 591000000 Hz -1.9 dBmV 38.2 dB 0 0
21 Locked QAM256 21 597000000 Hz -2.3 dBmV 38.6 dB 0 0
22 Locked QAM256 22 603000000 Hz -2.2 dBmV 40.0 dB 0 0
23 Locked QAM256 23 609000000 Hz -1.7 dBmV 41.4 dB 0 0
24 Locked QAM256 24 615000000 Hz -1.5 dBmV 41.4 dB 0 0

<tabindex=-1>Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 3 5120 Ksym/sec 25000000 Hz 46.8 dBmV
2 Locked ATDMA 1 5120 Ksym/sec 37800000 Hz 46.8 dBmV
3 Locked ATDMA 2 5120 Ksym/sec 31400000 Hz 46.8 dBmV
4 Locked ATDMA 4 5120 Ksym/sec 18600000 Hz 46.8 dBmV
5 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
6 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
7 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
8 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV

 

Here's what the Netgear genie interface has under "Logs":

 
Description Count Last Occurrence Target Source
[TCP- or UDP-based Port Scan ] 1 Wed Feb 06 12:05:27 2019 73.5.168.131:33487 199.48.154.62:32973
[SUCCESS: User interface login ] 1 Wed Feb 06 11:21:08 2019 192.168.0.1:80 192.168.0.2:62035
[TCP- or UDP-based Port Scan ] 1 Wed Feb 06 11:15:44 2019 73.5.168.131:33485 199.48.154.68:41092
[Internet connected ] 1 Wed Feb 06 11:15:30 2019 73.5.168.131:0 0.0.0.0:0
[Firewall Up ] 1 Wed Feb 06 11:15:18 2019 ---.---.---.---:--- ---.---.---.---:---
[Public Network Interface up ] 1 Wed Feb 06 11:15:18 2019 ---.---.---.---:--- ---.---.---.---:---
[Time Of Day established ] 1 Wed Feb 06 11:15:02 2019 ---.---.---.---:--- ---.---.---.---:---
[Internet connected ] 1 Wed Feb 06 11:04:26 2019 73.5.168.131:0 0.0.0.0:0
[Firewall Up ] 1 Wed Feb 06 11:04:16 2019 ---.---.---.---:--- ---.---.---.---:---
[Public Network Interface up ] 1 Wed Feb 06 11:04:16 2019 ---.---.---.---:--- ---.---.---.---:---
[Time Of Day established ] 1 Wed Feb 06 11:03:59 2019 ---.---.---.---:--- ---.---.---.---:---
[Internet disconnected ] 1 Wed Feb 06 11:02:21 2019 ---.---.---.---:--- ---.---.---.---:---
[FAILURE: User interface login ] 1 Wed Feb 06 10:57:15 2019 192.168.0.1:80 192.168.0.2:63264
[Internet connected ] 1 Wed Feb 06 10:55:08 2019 73.5.168.131:0 0.0.0.0:0
[Firewall Up ] 1 Wed Feb 06 10:54:43 2019 ---.---.---.---:--- ---.---.---.---:---
[Public Network Interface up ] 1 Wed Feb 06 10:54:43 2019 ---.---.---.---:--- ---.---.---.---:---
[Time Of Day established ] 1 Wed Feb 06 10:54:27 2019 ---.---.---.---:--- ---.---.---.---:---
[Internet disconnected ] 4 Wed Feb 06 10:53:42 2019 ---.---.---.---:--- ---.---.---.---:---
[Time Of Day established ] 1 Wed Feb 06 10:53:04 2019 ---.---.---.---:--- ---.---.---.---:---
[Internet disconnected ] 1 Thu Jan 01 00:02:15 1970 ---.---.---.---:--- ---.---.---.---:---
[SUCCESS: User interface login ] 1 Thu Jan 01 00:01:54 1970 192.168.0.1:80 192.168.0.2:62985
[FAILURE: User interface login ] 3 Thu Jan 01 00:01:03 1970 192.168.0.1:80 192.168.0.2:62912
[SUCCESS: User interface login ] 1 Thu Jan 01 00:01:00 1970 192.168.0.1:80 192.168.0.2:62883
[Internet disconnected ] 1 Wed Feb 06 10:50:00 2019 ---.---.---.---:---

---.---.---.---:---

 

 

 

And here's what it has under "Event Logs":

Time Priority Description
2019-02-06, 11:02:18.0 Critical (3) Resetting the cable modem due to docsDevResetNow
2019-02-06, 10:54:11.0 Notice (6) Honoring MDD; IP provisioning mode = IPv6
2019-02-06, 10:53:35.0 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=b0:b9:8a:d8:9a:48;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2019-02-06, 10:53:30.0 Critical (3) No UCDs Received - Timeout;;CM-MAC=b0:b9:8a:d8:9a:48;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2019-02-06, 10:53:20.0 Warning (5) Lost MDD Timeout;CM-MAC=b0:b9:8a:d8:9a:48;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
2019-02-06, 10:53:11.0 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=b0:b9:8a:d8:9a:48;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Time Not Established Notice (6) Honoring MDD; IP provisioning mode = IPv6
Time Not Established Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=b0:b9:8a:d8:9a:48;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Time Not Established Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=b0:b9:8a:d8:9a:48;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Time Not Established Notice (6) Honoring MDD; IP provisioning mode = IPv6
Time Not Established Notice (6) Honoring MDD; IP provisioning mode = IPv6
Time Not Established Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=b0:b9:8a:d8:9a:48;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Time Not Established Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;CM-MAC=b0:b9:8a:d8:9a:48;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
Time Not Established Notice (6) WiFi Interface [wl0] set to Channel 11 (Side-Band Channel:N/A) - Reason:INIT
Time Not Established Notice (6) WiFi Interface [wl1] set to Channel 153 (Side-Band Channel:N/A) - Reason:INIT
Time Not Established Notice (6) WiFi Interface [wl0] set to Channel 11 (Side-Band Channel:N/A) - Reason:INIT
Time Not Established Notice (6) WiFi Interface [wl1] set to Channel 153 (Side-Band Channel:N/A) - Reason:INIT
Time Not Established Notice (6) WiFi Interface [wl0] set to Channel 1 (Side-Band Channel:N/A) - Reason:INIT
Time Not Established Notice (6) WiFi Interface [wl1] set to Channel 153 (Side-Band Channel:N/A) - Reason:INIT
Time Not Established Critical (3)

SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=b0:b9:8a:d8:9a:48;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;

 

And, finally, what is available under "EMTA Event Log":

 
 
 
 
Time Text EndpointName
2019-02-06 16:56:55 INFO: SIP Message Sent
==>21.140.13.176:5060: Sending packet to: 76.96.197.84:5060
SIP/2.0 200 OK
Via: SIP/2.0/UDP 76.96.197.84:5060;branch=z9hG4bK12f4de6d262d2114f1a396f1b88e2198jaaaaaaiaaaaaaxzv5lrq3Zqkv7aae4yhtjjxm2x2aaaaabqaaaaaaaa
From: <sip:+1651
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 16:56:55 INFO: SIP Message Received
==>21.140.13.176:5060: Received packet from: 76.96.197.84:5060
NOTIFY sip:+16515022957@21.140.13.176:5060 SIP/2.0
To: <sip:+16515022957@ims.comcast.net>;tag=3795b590dc
From: <sip:+16515022957@ims.comcast.net>;tag=013d83cd0f64
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 16:56:55 INFO: Endpt 0 on-hook; cmgr event OPER_OK mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 16:56:55 INFO: SIP Message Received
==>21.140.13.176:5060: Received packet from: 76.96.197.84:5060
SIP/2.0 200 OK
To: <sip:+16515022957@ims.comcast.net>;tag=2f5a41c102de64c7f0d5d17042506117
From: <sip:+16515022957@ims.comcast.net>;tag=6ff409b647
Call-ID: daa71
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 16:56:55 INFO: SIP Message Sent
==>21.140.13.176:5060: Sending packet to: 76.96.197.84:5060
REGISTER sip:ims.comcast.net SIP/2.0
Via: SIP/2.0/UDP 21.140.13.176;branch=z9hG4bKca7b35e10c15b00de;rport
Route: <sip:detr2.mi.comcast.net;lr>
Max-Forwards: 70
From: <
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 16:56:55 INFO: Endpt 0 on-hook; cmgr event TARGETS_UPDATE mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 16:08:55 INFO: SIP Message Sent
==>21.140.13.176:5060: Sending packet to: 76.96.197.84:5060
SIP/2.0 200 OK
Via: SIP/2.0/UDP 76.96.197.84:5060;branch=z9hG4bKf7a7b699b1413ce27981a6e01458fc89jaaaaaaiaaaaaaurhxeda3Zqkv7aae4yhtkentfuyaaaaabqaaaaaaaa
From: <sip:+1651
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 16:08:55 INFO: SIP Message Received
==>21.140.13.176:5060: Received packet from: 76.96.197.84:5060
NOTIFY sip:+16515022957@21.140.13.176:5060 SIP/2.0
To: <sip:+16515022957@ims.comcast.net>;tag=3795b590dc
From: <sip:+16515022957@ims.comcast.net>;tag=013d83cd0f64
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 16:08:55 INFO: Endpt 0 on-hook; cmgr event OPER_OK mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 16:08:55 INFO: SIP Message Received
==>21.140.13.176:5060: Received packet from: 76.96.197.84:5060
SIP/2.0 200 OK
To: <sip:+16515022957@ims.comcast.net>;tag=2f5a41c102d98c77c0d5d1444e30ca69
From: <sip:+16515022957@ims.comcast.net>;tag=6ff409b647
Call-ID: daa71
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 16:08:55 INFO: SIP Message Sent
==>21.140.13.176:5060: Sending packet to: 76.96.197.84:5060
REGISTER sip:ims.comcast.net SIP/2.0
Via: SIP/2.0/UDP 21.140.13.176;branch=z9hG4bK182b9a99a828a788d;rport
Route: <sip:detr2.mi.comcast.net;lr>
Max-Forwards: 70
From: <
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 16:08:55 INFO: Endpt 0 on-hook; cmgr event TARGETS_UPDATE mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 15:15:30 INFO: SIP Message Sent
==>21.140.13.176:5060: Sending packet to: 76.96.197.84:5060
SIP/2.0 200 OK
Via: SIP/2.0/UDP 76.96.197.84:5060;branch=z9hG4bKc617d2e5155a0ff1b2fee1da9e318437jaaaaaaiaaaaaayrsu3ta3Zqkv7aae4yhtkdybsoqaaaaabqaaaaaaaa
From: <sip:+1651
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 15:15:30 INFO: SIP Message Received
==>21.140.13.176:5060: Received packet from: 76.96.197.84:5060
NOTIFY sip:+16515022957@21.140.13.176:5060 SIP/2.0
To: <sip:+16515022957@ims.comcast.net>;tag=3795b590dc
From: <sip:+16515022957@ims.comcast.net>;tag=013d83cd0f64
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 15:15:30 INFO: Endpt 0 on-hook; cmgr event OPER_OK mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 15:15:30 INFO: SIP Message Received
==>21.140.13.176:5060: Received packet from: 76.96.197.84:5060
SIP/2.0 200 OK
To: <sip:+16515022957@ims.comcast.net>;tag=2f5a41c102d8c6ff90d5d11367f7eb5e
From: <sip:+16515022957@ims.comcast.net>;tag=6ff409b647
Call-ID: daa71
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 15:15:30 INFO: SIP Message Sent
==>21.140.13.176:5060: Sending packet to: 76.96.197.84:5060
REGISTER sip:ims.comcast.net SIP/2.0
Via: SIP/2.0/UDP 21.140.13.176;branch=z9hG4bK080c73fda115481da;rport
Route: <sip:detr2.mi.comcast.net;lr>
Max-Forwards: 70
From: <
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 15:15:30 INFO: Endpt 0 on-hook; cmgr event TARGETS_UPDATE mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 14:21:30 INFO: SIP Message Sent
==>21.140.13.176:5060: Sending packet to: 76.96.197.84:5060
SIP/2.0 200 OK
Via: SIP/2.0/UDP 76.96.197.84:5060;branch=z9hG4bK4b059854a76bfd355054da80fe00e61fjaaaaaaiaaaaaaxjaazpa3Zqkv7aae4yhtkjxcgjmaaaaabqaaaaaaaa
From: <sip:+1651
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 14:21:30 INFO: SIP Message Received
==>21.140.13.176:5060: Received packet from: 76.96.197.84:5060
NOTIFY sip:+16515022957@21.140.13.176:5060 SIP/2.0
To: <sip:+16515022957@ims.comcast.net>;tag=3795b590dc
From: <sip:+16515022957@ims.comcast.net>;tag=013d83cd0f64
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 14:21:30 INFO: Endpt 0 on-hook; cmgr event OPER_OK mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 14:21:30 INFO: SIP Message Received
==>21.140.13.176:5060: Received packet from: 76.96.197.84:5060
SIP/2.0 200 OK
To: <sip:+16515022957@ims.comcast.net>;tag=2f5a41c102d731dd50d5d0e1f51efb04
From: <sip:+16515022957@ims.comcast.net>;tag=6ff409b647
Call-ID: daa71
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 14:21:30 INFO: SIP Message Sent
==>21.140.13.176:5060: Sending packet to: 76.96.197.84:5060
REGISTER sip:ims.comcast.net SIP/2.0
Via: SIP/2.0/UDP 21.140.13.176;branch=z9hG4bKd733b549eebba1b97;rport
Route: <sip:detr2.mi.comcast.net;lr>
Max-Forwards: 70
From: <
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 14:21:30 INFO: Endpt 0 on-hook; cmgr event TARGETS_UPDATE mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 13:36:29 INFO: SIP Message Sent
==>21.140.13.176:5060: Sending packet to: 76.96.197.84:5060
SIP/2.0 200 OK
Via: SIP/2.0/UDP 76.96.197.84:5060;branch=z9hG4bK0c8a15563b5059eda67464b420f8e16cjaaaaaaiaaaaaaravloea3Zqkv7aae4yhtofasqsuaaaaabqaaaaaaaa
From: <sip:+1651
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 13:36:29 INFO: SIP Message Received
==>21.140.13.176:5060: Received packet from: 76.96.197.84:5060
NOTIFY sip:+16515022957@21.140.13.176:5060 SIP/2.0
To: <sip:+16515022957@ims.comcast.net>;tag=3795b590dc
From: <sip:+16515022957@ims.comcast.net>;tag=013d83cd0f64
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 13:36:29 INFO: Endpt 0 on-hook; cmgr event OPER_OK mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 13:36:29 INFO: SIP Message Received
==>21.140.13.176:5060: Received packet from: 76.96.197.84:5060
SIP/2.0 200 OK
To: <sip:+16515022957@ims.comcast.net>;tag=2f5a41c102d55482a0d5d0b8c008a107
From: <sip:+16515022957@ims.comcast.net>;tag=6ff409b647
Call-ID: daa71
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 13:36:29 INFO: SIP Message Sent
==>21.140.13.176:5060: Sending packet to: 76.96.197.84:5060
REGISTER sip:ims.comcast.net SIP/2.0
Via: SIP/2.0/UDP 21.140.13.176;branch=z9hG4bKbdea97cdac31033f1;rport
Route: <sip:detr2.mi.comcast.net;lr>
Max-Forwards: 70
From: <
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 13:36:29 INFO: Endpt 0 on-hook; cmgr event TARGETS_UPDATE mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 12:55:05 INFO: SIP Message Sent
==>21.140.13.176:5060: Sending packet to: 76.96.197.84:5060
SIP/2.0 200 OK
Via: SIP/2.0/UDP 76.96.197.84:5060;branch=z9hG4bKf7e4b326aa25b1966d13f519d3e9181cjaaaaaaiaaaaaad4bexia3Zqkv7aae4yhtl1ogmjeaaaaabqaaaaaaaa
From: <sip:+1651
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 12:55:05 INFO: SIP Message Received
==>21.140.13.176:5060: Received packet from: 76.96.197.84:5060
NOTIFY sip:+16515022957@21.140.13.176:5060 SIP/2.0
To: <sip:+16515022957@ims.comcast.net>;tag=3795b590dc
From: <sip:+16515022957@ims.comcast.net>;tag=013d83cd0f64
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 12:55:05 INFO: Endpt 0 on-hook; cmgr event OPER_OK mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 12:55:05 INFO: SIP Message Received
==>21.140.13.176:5060: Received packet from: 76.96.197.84:5060
SIP/2.0 200 OK
To: <sip:+16515022957@ims.comcast.net>;tag=2f5a41c102d328bce0d5d092d70fb09c
From: <sip:+16515022957@ims.comcast.net>;tag=6ff409b647
Call-ID: daa71
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 12:55:05 INFO: SIP Message Sent
==>21.140.13.176:5060: Sending packet to: 76.96.197.84:5060
REGISTER sip:ims.comcast.net SIP/2.0
Via: SIP/2.0/UDP 21.140.13.176;branch=z9hG4bKd293fcc3994f3fd2b;rport
Route: <sip:detr2.mi.comcast.net;lr>
Max-Forwards: 70
From: <
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 12:55:05 INFO: Endpt 0 on-hook; cmgr event TARGETS_UPDATE mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 12:02:52 INFO: SIP Message Sent
==>21.140.13.176:5060: Sending packet to: 76.96.197.84:5060
SIP/2.0 200 OK
Via: SIP/2.0/UDP 76.96.197.84:5060;branch=z9hG4bKb51bfb9acdecbd567baba77087f99780jaaaaaaiaaaaaa12mrqbq3Zqkv7aae4yhtlsifjv2aaaaabqaaaaaaaa
From: <sip:+1651
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 12:02:52 INFO: SIP Message Received
==>21.140.13.176:5060: Received packet from: 76.96.197.84:5060
NOTIFY sip:+16515022957@21.140.13.176:5060 SIP/2.0
To: <sip:+16515022957@ims.comcast.net>;tag=3795b590dc
From: <sip:+16515022957@ims.comcast.net>;tag=013d83cd0f64
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 12:02:52 INFO: Endpt 0 on-hook; cmgr event OPER_OK mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 12:02:52 INFO: SIP Message Received
==>21.140.13.176:5060: Received packet from: 76.96.197.84:5060
SIP/2.0 200 OK
To: <sip:+16515022957@ims.comcast.net>;tag=2f5a41c102d18d4240d5d06309b66d3f
From: <sip:+16515022957@ims.comcast.net>;tag=6ff409b647
Call-ID: daa71
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 12:02:52 INFO: SIP Message Sent
==>21.140.13.176:5060: Sending packet to: 76.96.197.84:5060
REGISTER sip:ims.comcast.net SIP/2.0
Via: SIP/2.0/UDP 21.140.13.176;branch=z9hG4bKe0e54793551e305b0;rport
Route: <sip:detr2.mi.comcast.net;lr>
Max-Forwards: 70
From: <
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 12:02:52 INFO: Endpt 0 on-hook; cmgr event TARGETS_UPDATE mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 11:16:35 INFO: Endpt 1 on-hook; cmgr event OPER_NOK_FORBIDDEN mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 11:16:35 Registration failed for user <B0B98AD89A49002@ims.comcast.net>; reason<port shutdown 403 FORBIDDEN> mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 11:16:35 INFO: SIP Message Received
==>21.140.13.176:5060: Received packet from: 76.96.197.84:5060
SIP/2.0 403 Forbidden 0102001005001
To: <sip:B0B98AD89A49002@ims.comcast.net>;tag=5a0afecd02b3c3b5d0d5d038a8fc9dbe
From: <sip:B0B98AD89A49002@ims.comcast.net>;tag
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 11:16:35 INFO: SIP Message Sent
==>21.140.13.176:5060: Sending packet to: 76.96.197.84:5060
REGISTER sip:ims.comcast.net SIP/2.0
Via: SIP/2.0/UDP 21.140.13.176;branch=z9hG4bK8f931960355af1c0e;rport
Route: <sip:detr2.mi.comcast.net;lr>
Max-Forwards: 70
From: <
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 11:16:35 INFO: Endpt 1 on-hook; cmgr event TARGETS_UPDATE mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 11:16:04 INFO: SIP Message Sent
==>21.140.13.176:5060: Sending packet to: 76.96.197.84:5060
SIP/2.0 200 OK
Via: SIP/2.0/UDP 76.96.197.84:5060;branch=z9hG4bK26d8f39cf248c4a9d146e76c60ebdbcbjaaaaaaiaaaaaaud3ua1q3Zqkv7a5fohricm1nepqaaaaabqaaaaaaaq
From: <sip:+1651
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 11:16:04 INFO: Endpt 0 on-hook; cmgr event MWI_ON mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 11:16:04 INFO: SIP Message Received
==>21.140.13.176:5060: Received packet from: 76.96.197.84:5060
NOTIFY sip:+16515022957@21.140.13.176:5060 SIP/2.0
To: <sip:+16515022957@ims.comcast.net>;tag=af227b5f9f
From: <sip:+16515022957@ims.comcast.net>;tag=ba41ec50
Ca
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 11:16:04 INFO: SIP Message Sent
==>21.140.13.176:5060: Sending packet to: 76.96.197.84:5060
SIP/2.0 200 OK
Via: SIP/2.0/UDP 76.96.197.84:5060;branch=z9hG4bK57a7e35985aedb6d42eb705f2db3faa6jaaaaaaiaaaaaayzpyavq3Zqkv7aae4yhtiis4gziaaaaabqaaaaaaaa
From: <sip:+1651
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 11:16:04 INFO: SIP Message Received
==>21.140.13.176:5060: Received packet from: 76.96.197.84:5060
SIP/2.0 200 OK
To: <sip:+16515022957@ims.comcast.net>;tag=ba41ec50
From: <sip:+16515022957@ims.comcast.net>;tag=af227b5f9f
Call-ID: f96b0d84972fa74e@21.140.13.17
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 11:16:04 INFO: SIP Message Received
==>21.140.13.176:5060: Received packet from: 76.96.197.84:5060
NOTIFY sip:+16515022957@21.140.13.176:5060 SIP/2.0
To: <sip:+16515022957@ims.comcast.net>;tag=3795b590dc
From: <sip:+16515022957@ims.comcast.net>;tag=013d83cd0f64
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 11:16:04 INFO: SIP Message Received
==>21.140.13.176:5060: Received packet from: 76.96.197.84:5060
SIP/2.0 200 OK
To: <sip:+16515022957@ims.comcast.net>;tag=013d83cd0f64ab430d5d0382f39ac3d
From: <sip:+16515022957@ims.comcast.net>;tag=3795b590dc
Call-ID: e80876
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 11:16:04 INFO: SIP Message Sent
==>21.140.13.176:5060: Sending packet to: 76.96.197.84:5060
SUBSCRIBE sip:+16515022957@ims.comcast.net SIP/2.0
Via: SIP/2.0/UDP 21.140.13.176;branch=z9hG4bK00dd0a549a1e78406;rport
Route: <sip:detr2.mi.comcast.net;lr>
Max-Forward
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 11:16:04 INFO: SIP Message Sent
==>21.140.13.176:5060: Sending packet to: 76.96.197.84:5060
SUBSCRIBE sip:+16515022957@ims.comcast.net SIP/2.0
Via: SIP/2.0/UDP 21.140.13.176;branch=z9hG4bK624eef7c313dcdab8;rport
Route: <sip:detr2.mi.comcast.net;lr>
Max-Forward
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 11:16:04 INFO: Endpt 0 on-hook; cmgr event OPER_OK mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 11:16:04 INFO: SIP Message Received
==>21.140.13.176:5060: Received packet from: 76.96.197.84:5060
SIP/2.0 200 OK
To: <sip:+16515022957@ims.comcast.net>;tag=2f5a41c102cf550d40d5d0382e5bc564
From: <sip:+16515022957@ims.comcast.net>;tag=6ff409b647
Call-ID: daa71
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 11:16:04 INFO: SIP Message Sent
==>21.140.13.176:5060: Sending packet to: 76.96.197.84:5060
REGISTER sip:ims.comcast.net SIP/2.0
Via: SIP/2.0/UDP 21.140.13.176;branch=z9hG4bK2c2d04cf8a89f33e8;rport
Route: <sip:detr2.mi.comcast.net;lr>
Max-Forwards: 70
From: <
mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
2019-02-06 11:16:04 INFO: Endpt 0 on-hook; cmgr event TARGETS_UPDATE mB0B98AD89A49.detr2.mi.comcast.net/21.140.13.176
Frequent Visitor

Re: Slow speed, blinking DS/US light on Netgear C7100V

Update: Without making any changes in the past couple of days, I noticed that the DS/US light had stopped flashing this morning, and had been still flashing as of last night.  It looks like the device was finally able to lock on channel 15 since sometime overnight, but a huge number of correctables and uncorrectables (~41%). 

 
 
 
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

<tabindex=-1>Startup Procedure
Procedure Status Comment
Acquire Downstream Channel 495000000 Hz Locked
Connectivity State OK Operational
Boot State OK Operational
Configuration File OK ------------
Security Enable BPI+

<tabindex=-1>Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
1 Locked QAM256 5 495000000 Hz -0.4 dBmV 43.4 dB 0 0
2 Locked QAM256 1 471000000 Hz -0.6 dBmV 43.6 dB 0 0
3 Locked QAM256 2 477000000 Hz -0.6 dBmV 43.8 dB 0 0
4 Locked QAM256 3 483000000 Hz -0.5 dBmV 43.6 dB 0 0
5 Locked QAM256 4 489000000 Hz -0.6 dBmV 43.5 dB 0 0
6 Locked QAM256 6 507000000 Hz -0.2 dBmV 39.8 dB 0 0
7 Locked QAM256 7 513000000 Hz -0.2 dBmV 43.8 dB 0 0
8 Locked QAM256 8 519000000 Hz -0.2 dBmV 30.5 dB 3354 0
9 Locked QAM256 9 525000000 Hz -0.2 dBmV 31.2 dB 343 0
10 Locked QAM256 10 531000000 Hz -0.1 dBmV 39.3 dB 0 0
11 Locked QAM256 11 537000000 Hz 0.3 dBmV 43.7 dB 0 0
12 Locked QAM256 12 543000000 Hz 0.5 dBmV 43.8 dB 0 0
13 Locked QAM256 13 549000000 Hz 0.4 dBmV 43.6 dB 0 0
14 Locked QAM256 14 555000000 Hz 0.5 dBmV 43.6 dB 0 0
15 Locked QAM256 15 561000000 Hz 0.4 dBmV 26.6 dB 43080220 17884814
16 Locked QAM256 16 567000000 Hz 0.3 dBmV 33.5 dB 1935484 10085
17 Locked QAM256 17 573000000 Hz -0.2 dBmV 43.2 dB 0 0
18 Locked QAM256 18 579000000 Hz -0.2 dBmV 40.8 dB 0 0
19 Locked QAM256 19 585000000 Hz -0.4 dBmV 42.6 dB 0 0
20 Locked QAM256 20 591000000 Hz -0.5 dBmV 41.4 dB 0 0
21 Locked QAM256 21 597000000 Hz -0.7 dBmV 39.0 dB 0 0
22 Locked QAM256 22 603000000 Hz -0.8 dBmV 41.4 dB 0 0
23 Locked QAM256 23 609000000 Hz -0.9 dBmV 42.5 dB 0 0
24 Locked QAM256 24 615000000 Hz -0.8 dBmV 42.5 dB 0 0

<tabindex=-1>Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 2 5120 Ksym/sec 31400000 Hz 46.5 dBmV
2 Locked ATDMA 1 5120 Ksym/sec 37800000 Hz 46.8 dBmV
3 Locked ATDMA 3 5120 Ksym/sec 25000000 Hz 46.8 dBmV
4 Locked ATDMA 4 5120 Ksym/sec 18600000 Hz 46.8 dBmV
5 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
6 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
7 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
8 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV

 

Technician comes this morning, so I'll see what comes of this later today. 

Silver Problem Solver

Re: Slow speed, blinking DS/US light on Netgear C7100V

That 561-567MHz area is roughly broadcast channel 29. You may have leakage from a local TV station causing intererence. This doesn't mean you have a channel 29 TV station, as what 'channel' they broadcast on is not the same as the old analog-style numbers many still use on-screen.

http://otadtv.com/frequency/index.html

 

What area are you in? You can check the stations on Wikipedia or other TV sites that often show the actual broadcast channel/frequency.

Expert

Re: Slow speed, blinking DS/US light on Netgear C7100V

In any event, if RF ingress into the line(s) is the case, you may need a tech out to investigate its source.

 

Bear in mind that if the premises facing techs cannot 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. Good luck !



I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Mark the post as Best Answer!
Frequent Visitor

Re: Slow speed, blinking DS/US light on Netgear C7100V

Since my last post, the modem lost lock on channel 15 again. We do live in an area that has three radio/broadcast towers all less than 1 mile from our house, so it absolutely would not surprise me if it was interference. That I get the same results on the modem even when connected directly to the line entering the house would make me think it's coming from outside rather than inside, but the tech is due out in the next couple of hours, so I'll see what they have to say on the matter. 

 

 

Frequent Visitor

Re: Slow speed, blinking DS/US light on Netgear C7100V

So the tech just left (great guy, very personable and not at all judgy). After the all the standard process of "lets replace the ends on all your cables" and that not working, plus a few resets,  eventually he ran a new drop to the house. That seems to have done the trick, as the internet speed is back up to where it was previously. His best guess is that the line was simply old, and with winter finally kicking in here in Minnesota, the cold and snow put it on it's last legs. I'll probably take the extra step during a thaw to run a new cable into the house from the drop, just so everything is new, but happy for now. 

 

Here's the updated channel status (the correctables/uncorrectables have not increased since the initial startup):

<tabindex=-1>Startup Procedure
Procedure Status Comment
Acquire Downstream Channel 573000000 Hz Locked
Connectivity State OK Operational
Boot State OK Operational
Configuration File OK ------------
Security Enable BPI+

<tabindex=-1>Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
1 Locked QAM256 17 573000000 Hz 2.8 dBmV 43.3 dB 360 1078
2 Locked QAM256 1 471000000 Hz 2.3 dBmV 43.8 dB 0 0
3 Locked QAM256 2 477000000 Hz 2.4 dBmV 43.9 dB 0 0
4 Locked QAM256 3 483000000 Hz 2.4 dBmV 43.7 dB 0 0
5 Locked QAM256 4 489000000 Hz 2.4 dBmV 43.7 dB 0 0
6 Locked QAM256 5 495000000 Hz 2.5 dBmV 43.5 dB 0 0
7 Locked QAM256 6 507000000 Hz 2.6 dBmV 40.0 dB 0 0
8 Locked QAM256 7 513000000 Hz 2.7 dBmV 43.9 dB 0 0
9 Locked QAM256 8 519000000 Hz 2.5 dBmV 41.4 dB 0 0
10 Locked QAM256 9 525000000 Hz 2.6 dBmV 43.1 dB 0 0
11 Locked QAM256 10 531000000 Hz 2.5 dBmV 43.4 dB 0 0
12 Locked QAM256 11 537000000 Hz 2.9 dBmV 43.7 dB 0 0
13 Locked QAM256 12 543000000 Hz 2.9 dBmV 43.7 dB 0 0
14 Locked QAM256 13 549000000 Hz 3.0 dBmV 43.6 dB 0 0
15 Locked QAM256 14 555000000 Hz 3.0 dBmV 43.5 dB 0 0
16 Locked QAM256 15 561000000 Hz 3.1 dBmV 43.1 dB 0 0
17 Locked QAM256 16 567000000 Hz 2.3 dBmV 43.7 dB 0 0
18 Locked QAM256 18 579000000 Hz 2.1 dBmV 43.2 dB 0 0
19 Locked QAM256 19 585000000 Hz 2.3 dBmV 43.5 dB 0 0
20 Locked QAM256 20 591000000 Hz 2.0 dBmV 43.1 dB 0 0
21 Locked QAM256 21 597000000 Hz 1.8 dBmV 43.0 dB 0 0
22 Locked QAM256 22 603000000 Hz 1.5 dBmV 43.0 dB 0 0
23 Locked QAM256 23 609000000 Hz 1.6 dBmV 42.8 dB 0 0
24 Locked QAM256 24 615000000 Hz 1.5 dBmV 42.5 dB 0 0

<tabindex=-1>Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 2 5120 Ksym/sec 31400000 Hz 46.5 dBmV
2 Locked ATDMA 1 5120 Ksym/sec 37800000 Hz 46.8 dBmV
3 Locked ATDMA 3 5120 Ksym/sec 25000000 Hz 46.8 dBmV
4 Locked ATDMA 4 5120 Ksym/sec 18600000 Hz 46.8 dBmV
5 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
6 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
7 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
8 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
Expert

Re: Slow speed, blinking DS/US light on Netgear C7100V

Hope that was it and that things hold up for you. Good luck !



I am not a Comcast Employee.
I am a Customer Expert volunteering my time to help other customers here in the Forums.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Mark the post as Best Answer!
Silver Problem Solver

Re: Slow speed, blinking DS/US light on Netgear C7100V

Most like a bad connector or broken shield was allowing two local TV stations to leak in.  Didn't notice the low SNR and errors at the 519-525MHz frequencies in earlier posts.