Patent ID: 7899398

Claim:
A portable Karaoke system comprising: a case forming the external shape of the portable Karaoke system; a printed circuit board that is set in the case and includes a control circuit for operating the Karaoke system; an FM transmission board including a transmission circuit for modulating an audio signal output from the portable Karaoke system into a predetermined FM frequency and radio-transmitting the modulated signal to an external radio; an FM transmission module having a first connector electrically connected to an output signal line of the FM transmission board, the FM transmission module being constructed in a detachable separate single pack; a second connector that is arranged in a predetermined position of the case and connected to the first connector of the FM transmission module to transmit an output signal of the FM transmission module to the control circuit of the printed circuit board; and an antenna wire having a predetermined length, which is arranged in a predetermined position of the case and electrically connected to a transmission antenna terminal of the second connector, wherein the antenna wire is not included in the detachable separate single pack that includes the FM transmission module, and wherein a protruded support having a groove in which a main jack of a separate signal connecting device is stably supported is extended from the bottom end of the case, and the antenna wire is formed in a ‘U’ shape inside the protruded support.