009a34e0_tion_of_HDTV_antenna_CEA_zones__Antenna_Type
[Color Zone] Blue [Antenna Type] 
Medium Directional with pre-amplifier or Large Directional can be used in blue areas where the HDTV signal is weak or ghost producing structures are around. High rooftop installation is necessary.
Definition of HDTV antenna CEA zones
Antenna Type