There are two standard splitter locations...
If you have a "Box of many buttons" that select Sat/Ant/Cable/VCR/whetever.. that's it.
If you have a wall plate with a switch, 12 volt outlet, LED and antenna connector.. That's it.
On newer rigs you might have a Winegard wall plate with two digital displays and 3 buttons.. That's it
Home is where I park it!