DMR828S : 2W DMR Tier II Walkie Talkie Module With AMBE++
Type: DMR Walkite Talkie
Certification: Others
Output Power: 500mW,2W
Size:65.84*38.88
Parameters | Test condition | Min. | Typ. | Max | Unit | |||
Voltage range | 3.3 | 4.2 | 5.0 | V | ||||
Operating Temperature | -20 | 25 | 60 | ℃ | ||||
Frequency range | @UHF | 400 | 470 | MHz | ||||
@VHF | 134 | 174 | MHz | |||||
@350 | 320 | 400 | MHz | |||||
Start time | 2000 | ms | ||||||
Uart baud rate | 57600 | bps | ||||||
Current Consumption | ||||||||
Sleep current | CS pulled low for 3 seconds | < 55 | uA | |||||
Rx current | <135 | mA | ||||||
Tx current (high power) | @VCC=4.2V, 2w analog | <1300 | mA | |||||
@VCC=4.2V, 2w digital | <1000 | mA | ||||||
Tx current (low power) | @VCC=4.2V, 0.5w analog | <650 | mA | |||||
@VCC=4.2V, 0.5w digital | <500 | mA | ||||||
RF Parameters | ||||||||
Tolerance of frequency | 1 | 1.5 | ppm | |||||
Modulation sensitivity | 1.5KHz/2.5KHz frequency offset (N/W) | 6 | 7 | 12 | mv | |||
Adjacent-channel power | @12.5K offset | -60 | -62 | dBm | ||||
Mic input voltage | 0.1 | 1.6 | Vpp | |||||
CTCSS modulation frequency offset | 0.35 | 0.4 | 0.6 | KHz | ||||
Modulation characteristics | 300Hz | -13 | -11 | -9 | dB | |||
500Hz | -9 | -6 | -5 | dB | ||||
1000Hz | -3 | 0 | 1 | dB | ||||
2000Hz | 3 | 6 | 7 | dB | ||||
3000Hz | 5 | 7 | 11 | dB | ||||
Rx Parameters | ||||||||
Sensitivity | Analog (12db SNR) | -120 | dBm | |||||
Receiving BER(DMR modulation) | @ -118dBm | 5 | % | |||||
Audio output amplitude | 500 | mV | ||||||
Audio Output impedance | 30 | KOhm | ||||||
Adjacent channel selectivity | Offset:+12.5KHz | 60 | dB | |||||
Offset:+12.5KHz |
Type | DMR walkie talkie |
Output Power | 2W |
Certification | CE-RED, FCC ID |
Pin NO. | Pin name | I/O | Level standard | Description |
1 | MIC_IN | I | Microphone or line in | |
2 | UART-TX | O | 0-3.3V | UART-TXD |
3 | UART-RX | I | 0-3.3V | UART-RXD |
4, 12 | NC | |||
5 | HST_TXD | O | 0-3.3V | Transmit data pin (for upgrading program) |
6 | HST_RXD | I | 0-3.3V | Receive data pin (for upgrading program) |
7 | ANT | connect 50 ohm antenna | ||
8, 9, 10 | GND | - | Ground | |
11 | VCC | - | 0-5V | External and Positive supply 3.3~5V |
13 | CS | I | 0-5V | High level for normal working, leave open or pull low to enter sleeping mode |
14 | PTT | I | 0-3.3V | Module Input, Transmitting/receiving control, pull low to force the module to enter TX state; pull high for Rx state |
15 | +3.3V | - | 3.3V output, connect to 50mA | |
16 | LINE_OUT | O | Audio output | |
17 | T/R | O | 0-3.3V | Module Output, status of Transmitting/receiving, High for TX and low for Rx |
18 | SPKEN | O | 0-3.3V | Audio amplifier control |
19, 20 | GND | - | Ground |
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