[mythtv-users] Video breaking up after installing new video card

[John Pilkington]

On 03/05/14 01:34, Phill Edwards wrote:
>     If the signal is split by a size appropriate splitter and fed to each
>     device then your TV sets are being truthful, if however you are using
>     daisy chain splitters, a two way going to a TV and another two way and
>     to two tuner cards, or some such setup then your TV will lie to you.
>      >
>
>
> Thanks Daryl, I'm not sure I understood what you said. So I'll describe
> my set up (hope this little ASCII diagram works OK!):
>
> Antenna --
>           |
> | --> TV1 (picture quality good)
> |
> | --> TV2 (picture quality good)
>           |
> | --> Cheap $5 splitter
>                |
>                | --> HD Homerun (2 tuners) --> 1Gb switch --> Mythbackend
>                |
>                | --> PCI Card --> Mythbackend
>
> Does that make sense? If you still think it's a signal strength issue is
> there any way I can verify that? And if I need to get a booster, are
> there different types which are better than others? E.g. do some install
> at the antenna vs others install at the wall outlet?
>

It certainly sounds like a signal-strength issue; the best way to solve 
it will depend on the layout of your cables in-house. Put 
splitters/boosters only at points where the signal is known to be good, 
and at the first accessible point after the antenna.  Perhaps you could 
test by removing the TVs and the splitter feeding them - assuming that 
there is a splitter; or you could just fit a booster before it in the 
antenna lead.