Audio frequency coupling transmission of PAGING system module

The utility model provides an audio frequency coupling transmission of PAGING system module, include: coupling transformer, take a percentage coupling transformer's secondary having, the output of coupling transformer's elementary connection audio frequency optical transmitter and receiver, taking a percentage and connecting the input of audio frequency optical transmitter and receiver, the two -way audio frequency that the two -way audio frequency that makes 4 line systems of audio frequency optical transmitter and receiver converted 2 lines into is coupled to the PAGING system. The utility model discloses cooperation market ordinary audio frequency optical transmitter and receiver just can be used for the optical transmission of PAGING system to use, the low -loss of make full use of optical transmission make the communication distance extension more than 10 in addition tens kilometers, avoided producing the self excitation again simultaneously in the system. 本实用新型提供了种PAGING系统音频耦合传输模块，包括：耦合变压器，所述耦合变压器的次级带有抽