Network double-frequency radio modem

The utility model provides a network double-frequency wireless modem, which comprises a main module and an asynchronous serial interface module in the circuit, a Ethernet interface module and an audio interface module, as well as a SIM card power supply module, a SIM card slot module and a DC power supply module in succession connected to the circuit and also an external antenna connected to the main module, wherein the main module comprises a circuit connected radio frequency functional block and a base belt control module. The utility model provides a network double-frequency wireless modem and is applicable for all equipments with the serial port terminal, so as to provide the terminal equipment without the TCP/IP protocol processing with the wireless communication ability and supporting data, fax, short massage (supporting the point-to-point and small-zone broadcast) and voice transmission.