PROBLEM TO BE SOLVED: To provide a transmitter system in which electricity can be generated by the movement of an animal wearing it and a current position can be transmitted.SOLUTION: A transmitter system 1 includes a transmitter 2 worn by an animal and a mobile terminal 3 communicating between the transmitter 2 and itself. The transmitter 2 includes: a power generation unit 12 including a vibration power generation unit 10 for generating electricity by vibration; a power storage unit 13 for storing electricity; a storage control unit 14 for making the power storage unit 13 store electricity; a command receiving unit 15 being always operated and receiving a command from the mobile terminal 3; a GPS receiving unit 17 for acquiring a current position by a GPS satellite 5; a transmission unit 18 for transmitting the current position to the mobile terminal 3; and a transmission control unit 19 being started by the command received, acquiring the current position by starting the GPS receiving unit 17, then transmitting the current position to the mobile terminal 3 by starting the transmission unit 18, and thereafter, stopping the GPS receiving unit 17, the transmission unit 18 and itself.SELECTED DRAWING: Figure 2【課題】装着した動物が動くことで発電して現在位置を発信することが可能な発信器システムを提供する。【解決手段】発信器システム1に、動物に装着される発信器2と、発信器2との間で通信する携帯端末3とを備え、発信器2に、振動により発電する振動発電部10を有した発電部12と、電気を蓄える蓄電部13と、電気を蓄電部13に蓄えさせる蓄電制御部14と、常時稼働し携帯端末3からのコマンドを受信するコマンド受信部15と、GPS衛星5により現在位置を取得するGPS受信部17と、携帯端末3へ現在位置を送信する送信部18と、受信したコマンドにより起動し、GPS受信部17を起動させて現在位置を取得した後に、送信部18を起動させて現在位置を携帯端末3へ送信させ、その後、GPS受信部17及び送信部18と自身とを休止させる送信制御部19と、備えさせる。【選択図】図2