VHF module for portable intercom and paging system | Tianhui Micro Technology

VHF module properties

This module is a highly cost-effective wireless voice intercom and data transmission module, with built-in high-performance RF transceiver chip, microcontroller and RF power amplifier. The external controller can set the module working parameters and control the transceiver of the entire module through standard asynchronous serial interface (RS232) communication. This module only needs an external antenna, MIC and voice power amplifier to form a complete intercom or data transmission radio.

VHF Module

FM demodulation technology based on digital signal processing technology;

Frequency range: 136M～174MHZ;

Frequency step selectable: 5K/6.25K/12.5K/25K;

RF output power: high power 2W, low power 0.5W

Voice encryption (scrambling) function: (8 modes optional)

Short message SMS sending and receiving function: air speed 1200 baud rate;

Serial communication: 9600 baud rate;

Built-in CTCSS (38 groups), CDCSS (83 groups) codec;

Automatic tail sound elimination function;

Busy Lockout Loop (BCLO) function;

Digital volume (1-8 levels) adjustable;

Voice-controlled hands-free calling function (0-8 levels) is adjustable;

The squelch level (0-9 levels) is adjustable;

MIC sensitivity software adjustable (1-8 levels)

High receiving sensitivity: -122dBm;

Ultra-low power sleep mode (0.1uA);

Voltage operating range: 3.3~5.0V

Applicable places: portable intercom and paging system