The HDX1000 is a outdoor outside antenna and the HDX1000 does have a built in amplifier.
This is important --> the HDX1000 needs to be mounted/installed so the HDX1000 has the Least Obstructed View of the Tv stations to the north east.
For 1 Tv connected use no splitter.
For 2 Tv's connected.
http://www.hollandelectronics.com , also available at ,
http://www.solidsignal.com.
HFS-2D , 2 way splitter.
HFS-3D , 3 way splitter.
The HFS splitters pass power from the power supply in the apartment to the amplifier in the HDX1000 antenna outside.
The cable Tv system needs to be COMPLETELY DISCONNECTED from the coax wiring that is used for the Tv antenna.