225' from the pole needs a helper pole inbetween, else the line has stretched and impedance is bad... 100-125' is the max on rg6 with messenger, without a helper pole.
Even with good line, I'd prefer to see rg11.
How close are tree branches, normally the squirells and raptors sit on a branch and chew the line.
There is a pole on my property, roughly half way between the house and the pole on the road. Will report back with best guess at cable size.
Tree branches get fairly close, but not many (if any) squirrels... the dog and the cats take care of them and rabbits. We don't see many of either on the property.
cold and snow all day, didn't get out to look at the line. Speed back down sub 4Mbps today and SNR back down to 28db.
Hope it warms up tomorrow so I can go out and see if anything obvious is visible
The correct spec for modems in the real world on an HFC all qam system running qam 256 is DS level of -8 to +8 dBmv. If you're seeing over + 10 coming in, their ether needs to be an attenuator or a properly terminated splitter in line, if the levels over + 15 the outside tapoff and amplifiers have issues and it can't be cleaned up in the house by attenuating the signal.
You can't run over +10 and have 500+ mHz of QAM only bandwidth and thru a fiber to Coaxial (HFC) connection, It usually pushes channel s/n down below 35 dB.
The street amps here are set for +30 dBmv outputs, I'm on a 26 dB tapoff bolted right on the amp, with +4 leaving the pole. After the drop and a 2 way splitter, I have around 0 dBmv
Shortly after posting the earlier messages, my modem stopping picking up channel 6 and I have been back up to full speed. I realize this doesn't mean the problem is fixed, but only avoided for the time being and will come back. However, I can't really call TWC/Spectrum for a repair call when it's working, so I'll have to wait for it to go down again.
FWIW, what I'm getting now:
|Frequency||705000000 Hz||711000000 Hz||717000000 Hz||723000000 Hz||729000000 Hz||735000000 Hz||741000000 Hz||747000000 Hz|
|Signal to Noise Ratio||36 dB||36 dB||36 dB||36 dB||36 dB||37 dB||37 dB||37 dB|
|Power Level |
|-7 dBmV||-8 dBmV||-8 dBmV||-8 dBmV||-8 dBmV||-7 dBmV||-7 dBmV||-7 dBmV|
|Frequency||24200000 Hz||37000000 Hz||30600000 Hz||19400000 Hz|
|Ranging Service ID||11724||11724||11724||11724|
|Symbol Rate||5.120 Msym/sec||2.560 Msym/sec||5.120 Msym/sec||2.560 Msym/sec|
|Power Level||45 dBmV||47 dBmV||46 dBmV||45 dBmV|
|Upstream Modulation|| QPSK|
|Total Unerrored Codewords||3909707996||3909723607||3909715421||3909699150||3909689298||3909690911||3909691979||3909692793|
|Total Correctable Codewords||17||4||8||0||23||51||17||9|
|Total Uncorrectable Codewords||670||1425||1422||1334||1549||1452||1399||1602|
You don't need to wait to call Spectrum for a service visit until when your internet is failed. Print out the event log and signal level reports for both cases 'DS6 assigned, everything sucks', and for 'No DS6, no problems'. Then hand them to the tech when he shows up and tell him "THIS is the problem you have to fix." The problem is still there with DS6 even if your modem is not assigned to use it.