For 1 Tv connected use no splitter.
For 2 Tv's connected use a
HFS-2D , 2 way splitter.
For 3 Tv's connected use a
HFS-3D , 3 way splitter.
These splitters pass power form the power supply in the house to the amplifier part that is mounted close to the antenna.
http://www.hollandelectronics.com , also available at ,
http://www.solidsignal.com.