MS2000 antenna is mounted horizontal like a flying saucer in level flight.
Do not install/mount the MS2000 tipped at odd angles.
The MS2000 is to be installed above the roof in such a manner that roof and etc. is not blocking reception in any direction.
The MS2000 says it is omni directional.
The MS2000 is not 100% omni directional , turning the antenna to find a sweet spot will often improve reception.
Here are some above the roof antenna mounts ,
http://www.ronard.com/909911.html ,
http://www.ronard.com/34424560.html ,
http://www.ronard.com/ychim.html ,
http://www.ronard.com.
Buy the ronard antenna mounts at solidsignal by typing the word ronard in the solidsignal search box.
Here are places to by antenna mounts and etc. ,
http://www.solidsignal.com ,
http://www.winegarddirect.com ,
http://www.channelmasterstore.com ,
http://www.amazon.com.
Some splitters pass electric power through the splitter and some do not.
The power supply/power injector can be connected on the other side of the splitter so the power supply/power injector is feeding power through coax to the amplifier that is in the saucer unit with out going through the splitter.
Or can install a power passing splitter.
The splitter will be labeled power passing. Most common power passing splitters pass power through one leg of the splitter , through one output and one input.
Here are some High Quality power passing splitters that are beyond the common power passing splitter , and Yes a common one leg power passing splitter is Ok to use.
http://www.hollandelectronics.com , also available at ,
http://www.solidsignal.com.
HFS-2D , 2 way splitter.
HFS-3D , 3 way splitter.
HFS-4D , 4 way splitter.