If you have noise on Ch5 & Ch2 in diagonal stripe (herring bone?), I find that generally indicates TOO MUCH signal strength which can be solved by using a proper 1GHz splitter w/ attenuation (2/2/4, 3/3/6). Though 1GHz if what's needed by the cable modem & digital cable, since you're talking about problems in the low end of the analog signal it's likely not a 900MHz vs. 1GHz problem (not that you shouldn't use a 1GHz but those channels came over 900MHz splitters for decades).

Which cable modem do you have? The Motorola's have a nice feature that a status page shows the signal strength coming in. It should ideally be 0db/mv, higher would cause the kind of problems you speak of on Ch 2 & 5. You could use that to decide if maybe you need higher attenuation to the TV feed.



Steve Tomporowski wrote:
I'll be pretty amazed if this message shows up on the list, the last
two I send never made it.

This 'handyman' friend of my wife's (a really long story) rerouted the
cable to the Living Room.  In the process, he replaced the 2 way
splitter outside with a 3 way splitter.  One line goes to the living
room, the next goes to the cable modem and the third goes to a
distribution amp.  On all the TV sets in the house, this is analog
cable, channels 2 through 6 are virtually unwatchable due to diagonal
noise.

Outside the connectors are pretty tight, but the connectors that have
been out there are weathered.  If all the channels had problems, I'd
suspect that a shield was bad.

I have yet to do any trouble-shooting on this, but I'd like to get
some ideas, or maybe someone has seen this before.

It's Cox Cable.

Thanks....Steve




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