HOMEPRODUCTSWALKIE TALKIE MODULES DMR858S : 5W EMBEDDED DMR TIER II WALKIE TALKIE MO...
DMR858S : 5W Embedded DMR Tier II Walkie Talkie Module
DMR858S : 5W Embedded DMR Tier II Walkie Talkie Module
DMR858S : 5W Embedded DMR Tier II Walkie Talkie Module
DMR858S : 5W Embedded DMR Tier II Walkie Talkie Module
DMR858S : 5W Embedded DMR Tier II Walkie Talkie Module
DMR858S : 5W Embedded DMR Tier II Walkie Talkie Module
DMR858S : 5W Embedded DMR Tier II Walkie Talkie Module
DMR858S : 5W Embedded DMR Tier II Walkie Talkie Module
DMR858S : 5W Embedded DMR Tier II Walkie Talkie Module
DMR858S : 5W Embedded DMR Tier II Walkie Talkie Module
DMR858S : 5W Embedded DMR Tier II Walkie Talkie Module
DMR858S : 5W Embedded DMR Tier II Walkie Talkie Module

DMR858S : 5W Embedded DMR Tier II Walkie Talkie Module

  • DMR858S is an ALL-IN-ONE DMR 5W professional walkie talkie module. It combined analog and DMR Tier II walkie talkie function. This product is compatible with DMR radio with Moto AMBE++ and all the analog walkie talkie in the market. DMR858S is easy to use , which embedded DSP processor , DMR encoder/decoder, RF / Audio Amplifier , PTT, Microphone, 16 Channel switch, Volume adjustment all on board. Just connected with power supply and speaker, it build a 5W professional DMR walkie talkie. DMR858S has long range and good voice quality. Special heat sinks are designed specially to guarantee long time talking.
  • The digital intercom supports the following functions in DMR mode:
  • SMS sending function, support pass-through and SMS application;
  • Voice encryption function, SMS encryption function;
  • Calling and called prompts.
Parameters Condition Min Typ Max Unit
Power Supply   3.6 4.0 8.4 V
Working temperature   -20 25 60
Frequency Range @UHF 400   470 MHz
@VHF 134   174 MHz
@350 320   400 MHz
Serial baud rate     57600   bps
Current Consumption
Sleep current @CS pulled low for 3 seconds    1   mA
RX Current      170   mA
TX current (High power)-DMR @VCC=4.0V,2w   650   mA
@VCC=8V,5w   1000   mA
TX current (Low power)-DMR @VCC=4.0V,0.5w   400   mA
@VCC=8.0V,1w   460   mA
TX current (High power)-Analog @VCC=4.0V,2w   1200   mA
@VCC=8V,5w   1600   mA
TX current (Low power)-Analog @VCC=4.0V,0.5w   700   mA
@VCC=8V,1w   800   mA
Analog Rx Parameters
Rx sensitivity (Analog) @12dB SINAD   -120   dBm
S/N @1.5K deviation   40   dB
Adjacent channel selectivity 12.5KHz offset   62   dB
Inter modulation Rejection 12.5KHz offset   63   dB
Blocking immunity Interference frequency interval >1M   88   dB
Audio amplitude(line out) F0=1KHz 0.2 130 460 mV
Output impedance of audio(SPK)     8   Ohm
Audio distortion F0=1KHz     5 %
Audio response 300Hz   8   dB
500Hz   6  
1KHz   0  
2KHz   -6  
3KHz   -12  
DMR Rx Parameters
BER(DMR Mode) @ -117dBm   4   %
Adjacent channel selectivity(ACS) Offset:+12.5KHz 60     dB
Offset:-12.5KHz
Inter modulation Rejection Offset:+50/100KHz 63     dB
Offset:-50/100KHz
Blocking immunity Offset:+/-1MHz 87     dB
Offset:+/-5MHz
Analog Tx Parameters
Max Freq deviation 12.5KHz deviation(N)   2.2 2.5 KHz
25KHz deviation(W)   4.5 5 KHz
Sensitivity deviation: 1.5KHz/2.5KHz 4 7 10 mV
Audio distortion deviation: 1.5KHz/2.5KHz   1 5 %
Modulation characteristic 300Hz -13 -11 -9 dB
500Hz -9 -6 -5 dB
1KHz -3 0 1 dB
2KHz 3 6 7 dB
3KHz 3 7 11 dB
CTCSS deviation   350 400 600 Hz
Output power of adjacent channel 12.5KHz offset -60 -63   dBc
SNA 1.5KHZ/2.5KHz 38 40 50 dB
DMR Tx parameters
Frequency error     0.5   ppm
4FSK Tx BER       ≤1×10-4  
Output power of adjacent channel +/-12.5KHz     ≤-55 dB
Output power of next adjacent channel +/-25KHz     ≤ -65 dB
Type DMR walkie talkie
Output Power 5W

Features of DMR Walkie Talkie Module DMR858S

  • UHF band frequency:400~470 MHz
  • VHF band frequency:134~174MHz
  • 350 band frequency:320-400MHz  (3 frequency bands are optional)
  • 6~8 Km in open area
  • Max power output to 5W  Low power to 1W 
  • Sensitivity up to:-120dBm
  • Less than 2% BER @ -117dBm
  • TX/RX frequency set separately
  • Bandwidth for analog:12.5 / 25 KHz  Bandwidth for DMR:6.25KHz
  • DMR / Analog walkie talkie
  • SMS transmission and reception
  • Built-in EEPROM, data saved even powered off
  • Low power consumption in sleep mode
  • DMR Tier II
  • Tail sound elimination automatically
  • Embedded design for handheld product

Application of DMR Walkie Talkie Module DMR858S

Application of DMR Walkie Talkie Module DMR858S

Application circuit of wireless module DMR858S.


DMR858S Functional Board

Pin definition of wireless module DMR858S.


Pin NoDefinitionI/ODescription
1,2,4GND Ground
3MIC_INIMicrophone input
5UART-RXIConnected with UART-TX of external device
6UART-TXOConnected with UART-RX of external device
7,13GND Ground
8CSISleep: 0 ; working: 1 (high level or leave open)
9PTTITX: 0, RX: 1
10LINE_OUTOLine out for voice
11T/ROTX/RX indicator, 1: TX , 0: RX
12SPKENOValid signal indicator, 1: signal valid, 0: No valid signal received. This pin can be used to drive ecternal voice amplifier. 1: on, 0:off
14,15+3.3 V 3.3V output,maximum 50mA loading
16,17,18,19+VCC VCC (3.3V-9V)
20GND Ground

 

DMR858S-PJ (Control Board )

Control Board of Walkie Talkie Module DMR858S-PJ

Pin No.DefinitionI/ODescription
1VCC VDD (connected to Pin 19 of function board)
2,4GND Ground
3CSIConnect to CS of the function board
5PTTIConnect to PTT of the function board
6LINE_OUTOConnect to Line Out of the function board
78IFrequency channel selection,( 16 channels  ), The frequency channlel can be selected either by the onboard rotary switch or these pads input. Turn to channel 0 or remove the rotary switch if user want to control the channel with these pads.
 
 
 
I8 :the maximum bit,
I4: the 3rd bit,
I2: the 2nd bit;
I1: the least bit for example :  
I8421 encoding:
I0000: channel 0,  
I0001: channel 1
I0010: channel 2
84I0011 :channel 3
92I
101I1111 : channel 15
11SPKNoConnected with Speaker: 8 Ohm 2W   
12SPKPo
13,15,17GND Ground
14SETISetting mode  (0: setting mode , 1: normal mode )
16MIC_INIConnect to Mic_IN of the function board
18TXDOConnect to TXD/RXD of the function board
19RXDT
20+3.3V 3.3V output,maximum 50mA loading
21SPKEN Connect to SPKEN of the function board
22NC NC
23H/LIOutput power control, 0: low, 1: high
24GND Ground

Mechanical dimensions of wireless module DMR858S.

Mechanical dimensions of wireless module DMR858S.

Mechanical dimensions of wireless module DMR858S.


Privacy Policy

Privacy Policy

· Privacy Policy

There is currently no content available


           

Email:sales@nicerf.com

Tel:+86-755-23080616

Address:309-314, 3/F, Bldg A, Hongdu business building, Zone 43, Baoan Dist, Shenzhen, China


×
Submit