TDMA (dual time slot) technology is used to support full duplex, half duplex voice, data communication and data simultaneous interpreting.
Transceiver chip, RF power amplifier, DMR digital intercom chip. External MCU can set the working parameters of the module through standard asynchronous serial communication andControl module operating status. The module only needs external antenna, microphone and voice power amplifier to form a complete DMR digital walkie talkie.


Frequency range: 136 ~ 174mhz, 220 ~ 260MHz, 350 ~ 390MHz, 400 ~ 480mhz (optional, single module supports only one frequency band)
 frequency interval: digital 12.5khz, analog 12.5khz, 25kHz
 RF output power: high power 4W, low power 0.5W
 power supply voltage: 7.4v
 high receiving sensitivity:  - 121dbm
 support serial port frequency writing
 support forced insertion / disassembly function
 support ambe3000, ambe1000 and other vocoders
It supports DMR protocol and is compatible with traditional analog intercom mode
 the following services are supported in DMR mode:
• support group call, individual call and general call
• support confirmation, non confirmation SMS communication and status SMS
 support 4.8kbps and 9.6kbps data transmission
• the module has built-in AD / DA, codec, DC-DC and other IP addresses,
• support calling / called detection
• support call prompt
• support remote monitoring
• support emergency alarm
• support remote kill / activation
• support voice and SMS applications in direct and relay mode
The following services are supported in analog intercom mode:
• support CTCSS / cdcss sub tone squelch
• support listening