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Monday, February 5th, 2024

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High error rate on one downstream channel

For some time now I have been getting a very high error rate on one downstream channel on my Arris SB8200 V6. This is accompanied by repeated errors in the error log as shown below. (I have obscured the CM-MAC address).

Is this a problem with Comcast equipment, or interference from some local 591 MHz radiation source? I don't know of anything in our house that would source that frequency.

Corrected Uncorrected
26 Locked QAM256 585000000 Hz -4.5 dBmV 37.5 dB 7899 0
27 Locked QAM256 591000000 Hz -4.4 dBmV 26.7 dB 103382321 182118309
28 Locked QAM256 597000000 Hz -4.5 dBmV 37.6 dB 7437 0

02/05/2024 13:03 74010100 6 "CM-STATUS message sent. Event Type Code: 4; Chan ID: 27; DSID: N/A; MAC Addr: N/A; OFDM/OFDMA Profile ID: N/A.;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;"
02/05/2024 13:02 84020300 5 "MDD message timeout;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=[Edited: "Personal Information"];CM-QOS=1.1;CM-VER=3.1;"

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