400~470MHz Walkie Talkie Demo Board Kit 2W Power SR_FRS_2W Model B

400~470MHz Walkie Talkie Demo Board Kit 2W Power SR_FRS_2W Model B

400~470MHz Walkie Talkie Demo Board Kit 2W Power SR_FRS_2W Model B

Model: (WRL-00203)
Status: Unavailable
1.    Outline
FRS-DEMO-B is designed for Walkie Talkie transceiver module SR-FRS-1W and SR_FRS_0W5 demonstration, it can be used for  both UHF(400M-480M)
and VHF (136M-174M);it also can be used for voice intercom and data transfer  demonstration;  it is easy to set all the module parameter via the USB interface; 
When select the channel, it would voice broadcast the current channel number; You may quickly evaluateour module performance by the demo board, 
Just make a little modify, it can be directly applied into your real production. 
2. Demo board performance:
1) The power switch, volume adjust , Channel selection switch 3 in 1;
16 channels can be selected by the encoder switch;  
2)   It is easy to switch the VOX(Sound control transmit) by a VOX switch, the VOX level can be set via the PC;
3)   Voice broadcast for the channel number, Chinese/English could be selected. 
4)   Monitor function by press [MON]key;
5)   Voice intercom demo;
6)   Data transfer demo;
7)   One group user interface: SQ, LINE_IN,  LINE_OUT, PTT,  GND
8)   Could restore to the factory  parameter setting
9)   The demo board parameter can be set via the USB interface, for the setting instruction please contact us to get the 《SR_FRS_1W UART communication protocol》
       and《SR_FRS_0W5 UART communication protocol》
  • Tx frequency, Rx frequency can be set alone;
  • Tx CTCSS, Rx CTCSS can be set alone;
  • Rf output power can be set by software;
  • Companding setting;
  • Transmit Busy lock setting;
  • Squelch level setting
  • GBW bandwidth setting
  • MIC sensitivity setting
  • Scramble setting
  • Volume setting
  • VOX level setting
  • TOT setting(Timer of transmit)
  • Auto power save setting
  • Data transfer
  • All setting can be kept when power off

 
3.      The demo board function define picture

1) The demo board size:45mm X 90 mm;
 2) DC power supply:3.3V-5V;
 3) USB type: MICRO USB;
 4) User interface:SQ, Line _in, Line_out, PTT, GND;
    When use Line_in,Should push the MIC selection to  “EXT”position;
5)LED:
           Red : DC power indication;
   Yellow: Transmit status indication
   Blue:  Receive signal indication 
4.      The demo board operation
4.1     The voice intercom
1.  Please mount the power, antenna, speaker; Push the MIC select switch to ‘INT’ position;
2.  Power on the demo board , the power indication LED(red) turns on, Then rotate the volume adjust switch to a proper position; After about 1seconds, the demo board would voice broadcast the current channel number;
3.  Adjust the channel selection switch, ensure the transmitter and receiver are at the same channel;
4.  Hold on the [PTT] key, the transmit indication LED(yellow) turns on, You may talk to the opposite side; After finished the talking, release the [PTT] key, the system automatically into the receive statues, When received the signal from the opposite side, The receive indication LED(blue)turns on;
5.  At weak signal area, you may hold on the[MON] key, the system into monitor mode, release the [MON]key, the monitor mode is cancelled;
6.  The frequency and the CTCSS for every channel can be set alone via the USB interface;
4.2     The sound control(VOX) 
1.  Push VOX switch to ON position, the VOX function is enabled, You may talk without [PTT]key, the system will automatically into transmit status.;
2.  During the VOX valid status,The transmit indication LED(Yellow) turns on;
When VOX enabled, the [PTT] key is still valid;
3.  Push VOX switch to OFF position, the VOX function is disabled, you can only intercom by press the [PTT] key;
4.  The VOX sensitivity can be set via the USB interface;
4.3   Earphone 
1.   The demo board can use the earphone, The speaker, microphone, and [PTT]  key are integrated 
in the earphone, You may make the intercom just by operate the earphone;
2.   Please be noted that the earphone socket may not be compatible with the 3’rd party earphone;
3.   If you need the earphone, please contact us;
4.4   User interface
1.   The demo board provide some useful interface for the user
SQ:       0: with valid receive signal; 1: without receive signal;
 Line_in: May connect to an external Microphone, or an external audio source;
           MIC select switch” must at the “EXT” position;
Line_out:The Frs module audio frequency directly output, Not via the audio amplify;
PTT:     0: Transmit; 1:Receive;
GND:     GND; 
4.5   Restore to the factory setting
1.  Power off;
2.  Press the [PTT] and hold on, then Power on; When the transmit indicate LED fast blink, 
you may release[PTT] key;
3.  When finished the system initialization,Transmit indication LED turns off,The system 
into the standby mode;
4.6    Data transfer/SMS transfer
1.  Connect the Demo board USB and the PC usb by MICRO USB cable;
2.  Send command:AT+DMOMES=[Length]xxxxxxxxxxx
For the detail of the command ,please refer the UART communication protocol;
For how to make the data transfer please refer “4.7 USB interface for parameter setting”
4.7    USB interface for parameter setting
1.  Firstly, you must install the USB driver,please download from the link:
http://www.prolific.com.tw/US/ShowProduct.aspx?p_id=225&pcid=41
NOTES: The USB 2 COM chip for this demo board is PL2303HX, it can only support the OS to WIN7,
 if you want support the OS to WIN8, please replace the PL2303HX with PL2303TA; 
2.   Power on the demo board, Connect the demo board and the PC with the Micro USB cable. 
3.  The COM port parameter setting 
                     Baut rate:  9600 
Data:           8
parity bit:    None
Stop:        1

 
4.  Demo board parameter setting
1) When you want set the frequency for some channel, You must rotate the channel selection switch to proper channel position firstly; 
Here is a example for GROUP COMMAND Setting:
AT+DMOSETGROUP=0,450.0500,450.2500,1,2,2,0
The parameter contents are as below in turn:
       0:Narrow
       450.0500:Transmit frequency( MHZ)
       450.2500:Receive frequency ( MHZ)
       1:Receive CTCSS
       2:Squelch level
       2:Transmit CTCSS
 
 

       0:Rf output power :1W, Companding:OFF, Busy lock:OFF

    
The other parameter setting is same as the Group setting, Please refer 《SR_FRS_1W UART communication protocol》 and 《SR_FRS_0W5 UART communication protocol》
5.  The default parameter for demo board:
5.1 UHF(400M-480M) demo board
1.  Band width:Narrow;
2.  Squelch level: 2;
3.  VOX sensitivity:6
4.  MIC sensitivity:6
5.  Volume:6
6.  Scramble:OFF
7.  Tx output power:1W (valid only for SR_FRS_1W) ;
8.  Companding:OFF
9.  Busy lock:OFF
10.TOT(Timer of Transmit):3minutes
11.The default frequency and CTCSS

 

Channel
Transmit
frequency
(MHZ)
Receive frequency
(MHZ)
Transmit
CTCSS
Receive
CTCSS
1
450.0500
450.0500
0
0
2
450.0750
450.0750
0
0
3
450.1000
450.1000
0
0
4
450.1250
450.1250
0
0
5
450.1500
450.1500
0
0
6
450.1750
450.1750
0
0
7
450.2000
450.2000
0
0
8
450.2250
450.2250
0
0
9
450.2500
450.2500
0
0
10
450.2750
450.2750
0
0
11
450.3000
450.3000
0
0
12
450.3250
450.3250
0
0
13
450.3500
450.3500
0
0
14
450.3750
450.3750
0
0
15
450.4000
450.4000
0
0
16
450.4250
450.4250
0
0

 

 


 

 


 
5.2  VHF(136M-174M)demo board
1.  Band width:Narrow;
2.  Squelch level: 2;
3.  VOX sensitivity:6
4.  MIC sensitivity:6
5.  Volume:6
6.  Scramble:OFF
7.  Tx output power:1W (valid only for SR_FRS_1W) ;
8.  Companding:OFF
9.  Busy lock:OFF
10.TOT(Timer of Transmit):3minutes
11.The default frequency and CTCSS

 

Channel
Transmit
frequency
(MHZ)
Receive frequency
(MHZ)
Transmit
CTCSS
Receive
CTCSS
1
150.0500
150.0500
0
0
2
150.0750
150.0750
0
0
3
150.1000
150.1000
0
0
4
150.1250
150.1250
0
0
5
150.1500
150.1500
0
0
6
150.1750
150.1750
0
0
7
150.2000
150.2000
0
0
8
150.2250
150.2250
0
0
9
150.2500
150.2500
0
0
10
150.2750
150.2750
0
0
11
150.3000
150.3000
0
0
12
150.3250
150.3250
0
0
13
150.3500
150.3500
0
0
14
150.3750
150.3750
0
0
15
150.4000
150.4000
0
0
16
150.4250
150.4250
0
0

   6.The standard FRS frequency assignment

 

 

 

Channel
China
(MHZ)
American
(MHZ)
European
(MHZ)
Australia
(MHZ)
1
409.7500
462.5625
446.00625
476.625
2
409.7625
462.5875
446.01875
476.650
3
409.7750
462.6125
446.03125
476.675
4
409.7875
462.6375
446.04375
476.700
5
409.8000
462.6625
446.05625
476.725
6
409.8125
462.6875
446.06875
476.750
7
409.8250
.462.7125
446.08125
476.775
8
409.8375
467.5625
446.09375
476.800
9
409.8500
467.5875

 
476.825
10
409.8625
467.6125

 
476.875
11
409.8750
467.6375

 
476.900
12
409.8875
467.6625

 
476.925
13
409.9000
467.6875

 
477.000
14
409.9125
467.7125

 
477.025
15
409.9250

 

 
477.050
16
409.9375

 

 
477.075
17
409.9500

 

 
477.100
18
409.9625

 

 
477.150
19
409.9750

 

 

 
20
409.9875

 

 

 

 

 

 


 

 


 

 
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