On Wed, 08 Feb 2012 19:30:07 -0600, amdx
wrote:

Any idea where channel 428 would be in that frequency range?
That's a duplicate of 4,2 but in HD, and it works when 42 doesn't.

Ummm... it's ugly. There are up to 10 standard definition or 2 HD
channels crammed into a 6 MHz wide RF slot. In order to untangle
this, you would need to run a PSIP decoder and extract the CVCT
record:
http://en.wikipedia.org/wiki/PSIP
to figure out where digital CH 428 fits. It could literally be
anywhere. However, if you happen to have an tuneable notch filter
(which I happen to have), you can stuff it in series with the cable,
and spin the dial until the signal disappears. Then, just read the
dial. (Comcast seems to be putting well paying and popular channels
on the lower frequencies, and obscure junk on the higher frequencies.
I'm not sure if this is intentional, accidental, or my imagination).

The 4 way splitter has a loss of about -7dB.

Just a point. I may not have made it clear. I had the tech put in two
2way splitters and connect me to the first one. Hoping to gain 3db.
(or 4) and it did make a difference.

Yeah, I saw that. I guess I wasn't too clear. The input signal can
vary over a 10-16dB range, and it still should work. The 3dB
difference between a two port and a 4 port splitter isn't going to
make much difference, exept at the higher channels.



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