Provided is a tuner module including a tuner module main body involving a tuner board, a first leg projected from the tuner module main body and to be inserted into a first hole formed on a circuit board main body, a second leg projected from the tuner module main body and to be inserted into a second hole formed on the circuit board main body, the second leg being shorter than the first leg, and a signal terminal projected from the tuner board and to be inserted into a third hole formed on the circuit board main body, the signal terminal being shorter than the second leg. A taper is formed on at least tip end parts of the first leg and the second leg.