Explain your setup.. do you have a router in place?

If you do: reset your router, hook your computer up and test. Check IP addresses.

If you don't: Call your ISP provider.

On my comcast account 192.168.100.1 is the address of my cable modem. For the most part the cable operator is going to have control of the modem, they just let you see it as favor.

192.168.0.1 or 192.168.1.1 are typical LAN addresses for most routers. When configured with the default subnet mask you should not have any problem seeing your cable modem with the router in place.

If you can see 192.168.100.1 with the router out of the loop then the router or a single cable may be misconfigured or bad.

Most cable providers temporaily LOCK your service to a particular MAC address. As a result you have to do a reboot of your cable modem (leave it off for a minut or two) and your router to allow a new device to associate with the cable modem. When I first signed up for cable internet; roadrunner (~1999) they hard locked to a MAC address. As a result if you changed network cards in your PC then you would have to call them up so they could reassign MAC addresses to your account 8O I remember when Linksys came out with one of the first routers for home use, calling roadrunner and telling them the MAC address for the router.

When you get into your modems status page (192.168.100.1) you may want to check out the transmit and recieve power levels. Too high of transmit power indicates a bad return path, To high a recieve power will burn out your cable modem, too low and noise is an issue. Splitters are commonly used to reduce the recieve power.

From my conversation with a good service tech: For my Motorola Surfboard the acceptable range of Downstream power levels is 5 to -10 dBmV. The Upstream power, lower is better, with 45dBmV being about as good as it gets.

Sorry, got a little long!

You may want to put the splitter back in line, try to pick up an attenuator.

I think you want to get your signal down to 5 to -10; if not you could burn out the cable modem. I haven't heard of it, but too high of a signal might saturate the reciever, degrading the signal. Too high of a signal doesn't really gain you anything.

Good luck.

Thanks JJ.

You're right, the Charter cable tech came out yesterday and installed a new, better splitter that dropped the downstream power down 3.5 db's.

With the new Motorola Surfboard modem I installed I was getting 13 to 15+ downstream db's. The tech said it should be between minus 12 to 12. I'm showing 11 db right now.

Downloads still slow down sometimes, between 6 pm and 9 or 10 PM. Perhaps thats local traffic. I don't know yet.

If I could find another cable broadband provider, I'd switch.

Thanks JJ.

I do use the Speakeasy speed test and sometimes during those "peak" times, I can't even get the test to come on.

There's also another speed test you can try it's :

http://www.speedtest.net/index.php

It's somewhat slow today, one test shows 3824 down and 480 up, the other 2870 down, 412 up, so it's below what I'm paying for.

Maybe there's some bandwidth hog in the neighborhood.

Now Speedtest.net is showing 4722/491 Not a very reliable speed.

What the f are you talking about your an idiot....

make sure the transmit or tx power is between 32 and 52 receive power or rx -12 to 12 mer or snr or signal noise ration is grater then 32... 192.168.100.1 is the modems ip address and you can check the status of the signals you cant block other people in your neighborhood you idiot.... its possible the signal is been going bad do to a bad amp or something else in a pole. many reasons... the key though is to check your signal at the time the modem is been going down.. speedtest speakeasy all those are estimates and should be close to the speeds you are paying for ... and yes lots of people on at the sametime in one node (about 100 houses in a neighborhood) will slowdown your speeds. its called sharing bandwidth... but it should never be kicking you out. im sure some of you have levels out of the range i just specified and your modem is working well chances are greater for your modem to go down... and i dont mean your going to fry it you cant fry a modem unless you got electricity and high voltage going to it... its just not going to work .... adding a splitters will decrease receive power and increase transmit power simple addition and subtraction. add a 3.5 db splitter to a signal wtih rx 5.5 and tx 45.5 you get rx 2 and tx 49 dont worry about the mer thats something only your provider will be able to take care of. check your connections make sure they are tight no lose fittings. bad fittings cuts in lines... all that good stuff and last but not lease dont tamper with the cable thats why theres professionals. other wise they let you do your own installs. and if all this is good and you still having issues it could be a bad modembut you got to troubleshoot at the root you idiot not block your neighbors you freakin noob.

alright than im an idiot pointing out another idiot...