So today my speed went into the crapper... I have seen a bunch of modem disconnects in the logs, etc.. I check the signal levels and see this...
Downstream Value
Frequency 111000000 Hz
Signal To Noise Ratio 38.9 dB
Power Level 0.9 dBmV
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Upstream Value
Channel ID 2
Frequency 32000000 Hz
Power 50.7 dBmV
I sent MediacomChad a PM and he says this is perfectly acceptable. But 50.7 seems awful high when the modems max is 55 on the upstream.
Up until Monday morning my Upstream was 42.7, it had been 42.7 for MONTHS. Monday morning one of their line techs was messing around in the alley behind me and the cable and internet went out a few times. It came back later that day solid but i noticed the upstream power level shot up. Thinking they might still be working i just said oh well its working. Until today, horrible speeds, disconnects, etc.
So i checked the level tonight and it was near 52-53, now i tried the splitter since Chad asked me to, removed the splitter and modem direct to the demarc box i got down to 47, put the splitter back inline and i had 50 again. I tried three other new splitters and still 50. Removed the splitter and again 47. Sat and watched it a while it crept back up to 52 and then back down to 47. So i put the splitter back in and its been pretty steady for the last half hour or so at 50.7, four different splitters and all the same reading. So it has to be up the line from my demarc box. I got a new drop this summer, RG11 from the demarc to the pole, everything new from the demarc to the modem inside, not one single cable left, all new rg6 and connectors, nothing cheap, spent a couple hundred rewiring the house. Just to emphasis its not a simple connection problem here and i proved that moving the connection to the modem.
So tell me this, would you consider 50.7dBmV perfectly acceptable?? Because i tell my customers that above 45 they should get a service call from their ISP if i am troubleshooting internet problems.
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