DIVISION NETWORK SHOW UNIT IN ZOO AND SO ON

摘要

PURPOSE:To make a division network show possible by ramifying plural loop antennas, which oscillate sound magnetic waves, in one block independently and making switching of broadcase possible. CONSTITUTION:Plural loop antennas (L1-1)-(L3-3) which oscillate sound magnetic waves are ramified in one block B1 independently, and magnetic wave transmitters F1-F3 of respective loop antennas are connected to one sound signal generator G, and switching controller H is connected between magnetic wave transmitter F2 of the selected loop antenna and generator G, and radio transmitter TX and radio receiver RX are installed in the other field, and receiver RX is connected to controller H. By this constitution, explanation corresponding to the block is broadcasted simultaneously from respective antennas through transmitters F1-F3 from generator G in block B1 and can be received and listened to by receiver E in the block. Tape broadcast is flowed from transmitters in antennas which are not selected.