also, why channel 120...you may be the FIRST
integrator
I can remember that's used a channel that high!
Do ALL TV's support that channel without chagind
the settings? STD, IRC, HIRC, etc... are all different
option you may have to choose from on a TV, not
including CATV....blah...blah...blah...
???
We always start in the 120's, have for years. Lately I've been routinely adding an low pass filter tuned to above Ch 116 to allow the two-way cable boxes to work. In any event, we got tired of setting these modulated sources in the 80's only to have the client call with a "The cable company added some channels, and now the whole-house sat picture is fuzzy..." Now we start at the top and work down.
I have not seen a television in years that asked me to select STD, HRC or IRC; I suppose it's automatically selected. My cable meter is not so smart, and needs to be told.
send (and post) more info
avdude