SIWEI DMR818-NVOC 2W 400-470MHz UHF Digital Walkie Talkie Module

Tax included.

DMR mode:

Message transmission and reception.

Message calling return receipt;

Enhanced encryption of Voice and Text message.

Various voice call types: All call, Group call and Private call;

Reminder for input calling, calling status checking

Emergency alarm and radio monitor;

Radio kill and activate;

Repeater:

Analog mode:

CTCSS/CDCSS configurable

Squelch levels configurable

Features:

UHF band frequency:FH 400-480MHz/VFH 134-174MHz/320-390Mhz

Distance up to 4~6Km

Max power output to 2W,low power to 0.5W

High Sensitivity: -124dBm

Bit error rate down to 1% under -121dBm

Independent frequency for Tx and Rx.

Bandwidth: 12.5 / 25 KHz

DMR(Digital Mobile Radio)/Analog

Message transmission and receiption

Built-in EEPROM, data saved even powered off

1ppm TCXO crystal

51 CTCSS

Pins:

MIC_IN: Microphone or Line in

UART-TX: Tranmit

UART-RX: receive

SWCLK: Reserved

SWDIO: Reserved

ARM_RST: Reserved

ANT: 50 ohm antenna

GND: Ground

VCC: External and Positive supply 3.3-5V

EZP_CS: Reserved for program burning

CS: Leave Open or high level for normal working, pull low to enter sleeping mode

PTT: Module Input, Transmitting/receiving control, pull low to force the module to enter TX state;pull high for Rx state

+3.3V: 3.3 output, connect to 50mA

LINE_OUT: Audio output

T/R: Module output,status of Transmitting/receiving, high for TX and low for RX

SPKEN: Audio amplifier control

GND: Ground

Package Included:

1* DMR818 Module