To compensate for the temperature of a reference oscillator at a low cost.

A GPS receiver 1 is provided with an antenna 2 for receiving an electronic wave being transmitted from satellites and a signal-processing circuit 3 for receiving an processing a transmission electronic wave from a plurality of GPS satellites that has been received via the antenna 2. The signal- processing circuit 3 is provided with a TCXO (reference oscillator) 3f for supplying a high-frequency signal for converting frequency to a synthesizer 3e. A temperature controller 10 is arranged near the TCXO 3f. The temperature controller 10 is provided with a heater 10a for heating that is installed near the TCXO 3f and a fan 10b for cooling. A temperature sensor 11 is arranged near the TCXO 3f. A controller 12 is connected to the temperature sensor 11 and drives and controls the heater 10a and the fan 10b so that the detection value of the temperature sensor 11 becomes constant based on the detection value.