Acoustic echo suppression mechanism for a portable radio apparatus

摘要

The body of portable radio apparatus is composed of a cover 11 and a case 12, and an I/O connector 14 provided on a printed circuit board 13 is sandwiched between the cover 11 and the case 12. Onto the cover 11 is attached a transmitter (microphone) 15 provided on the printed circuit board 13 and the cover 11 is provided with a mouthpiece 16. The case 12 is provided with a battery receiver 17 for receiving batteries 18. The side of the I/O connector 14 facing the case 12 and the side of the I/O connector 14 facing the cover 11 are provided with ribs 19 and the case 12 and the cover 11 are provided with recesses 20, 21 to receive the ribs and further the side of the case 12 facing the external terminal 29 of the I/O connector and the side of the cover 11 facing the external terminal 29 of the I/O connector are provided with ribs 22, 23. <IMAGE>