A metal frame body has first to fourth side plates and is divided, by a
shield plate provided in the metal frame body, into a first compartment
area near the first side plate and a second compartment area near the
second side plate. A distributor is arranged in the first compartment
area and a tuner unit is arranged in the second compartment area. A first
connector is arranged in a position on the third side plate adjacent to
the first compartment area and a second connector, which is connected to
the distributor, is arranged in a position on the fourth side plate
adjacent to the first compartment area. The distance from the second side
plate to the central axis of the first connector is equal to the distance
from the second side plate to the central axis of the second connector.