To provide a synthesizer module that can be used not only in a destination area but also in the whole world and that can be readily set in output frequency. In the synthesizer module, a calculation formula table of a nonvolatile memory stores a plurality of frequency modes and the calculation formula of carrier frequencies corresponding to those frequency modes, and further stores, in its certain area, a frequency mode set during an initial setting of the device. A CPU, when receiving a channel number from a rotary SW during a frequency setting, calculates, based on a calculation formula corresponding to a currently set frequency mode, a carrier frequency corresponding to the channel number. This carrier frequency is set to a CONT of a PLL part.