|DRA818V VHF HAM Radio Module 144MHz 145MHz 146MHz 154MHz 174MHz Amateur Radio DIY Kit Descriptions:Frequency Range: 134~174MHz Tx/Rx frequency independent Channel space: 12.5KHz Configurable multi-channels Sensitivity: -122dBm Output power: +27/30dBm CTCSS / CDCSS codes 8 volume levels 8 squelch levels UART interface Temperature: -20°C ~+70°C TX current: 450/750mA Supply voltage: 3.3~4.5V DRA818V is a type of compact wireless voice transceiver module based on RFIC RDA1846 and works in VHF band. It integrates high speed microcontroller, high performance wireless transceiver IC, high power PA, audio process and squelching circuits. It provides standard UART interface which users can easily configure appropriate parameters for different applications. Users can easily construct a walkie-talkie system by connecting microphone, audio PA and speaker. Some parameters of DRA818V modules can be changed by following the commands in this section, which provide flexibility for designers to optimize related parameters to achieve the best performance. DRA818V modules use standard UART interface to communicate with microcontrollers or other hosts. The default data format is: 8 data bits, 1 stop bit, no parity and 9600 kbps data rate. Package includes: 1 x DRA818V Radio Module