A communication apparatus having a transmission section and a reception section that are selectively attached or detached from one another. The transmission section is operable to modulate an information signal to generate a high frequency signal and to wirelessly transmit the high frequency signal to the reception section, or to output the information signal to the reception section via a non-wireless coupling. The reception section is operable to receive the high frequency signal transmitted from the transmission section and to demodulate the high frequency signal to recover the information signal, or to receive the information signal outputted from the transmission section. Further, an attached condition is sensed, indicating whether the transmission section and the reception section are connected/attached to each other or disconnected/detached from each other, and switching between wireless transmission and non-wireless transmission is performed in accordance with the indicated condition.