Signal Issues?

[grenier]

Disconnect the analog TVs at the splitter.   Is everything else fine now?   If so, the incoming signal is not strong enough to split to so many devices.  

Isn't the signal split regardless of if there's something hooked up?

[ddeerrff]

Isn't the signal split regardless of if there's something hooked up?

Yes, in fact simply disconnecting a load from a splitter can increase the loss on the connected path.  It most certainly screws up the impedance matching.