SR_FRS_1W350

SR_FRS_1W350 Walkie Talkie Transceiver /Data transfer Module  UHF(350M-390M)2. Product Outline    The SR_FRS_1W350  is a low cost but high performance integrated wal

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SR_FRS_1W350 

Walkie Talkie Transceiver /Data transfer Module  

UHF(350M-390M)


2. Product Outline

    The SR_FRS_1W350  is a low cost but high performance integrated walkit talkie module. With built-in high performance micro controller, narrow band rf transceiver and standard Uart interface,it can be easily used and succeed in all the walkie talkie function with good quality voice and long distance transmission. Users only need to connect external audio amplifiers, microphone or speaker with this module ,then it can work as a small walkie talkie with 1W output . In open area, it can come to performance of 5Km communication. Simplified interface and ultra small size make this module into a wide range of applications, also can conveniently embed into various handheld devices,to improve the comprehensive performance of end products.

      Besides the  excellent voice intercom, The more important feature is this module has  the data/SMS transfer ability;  up to 60 byte can be sent at one time;  it  is compliance  with the standard UART transfer protocol;

        

3. Product performance 

  •   FM demodulation technique Based on digital signal processing technology

  •   Frequency RangeUHF 350M390MHZ

  •   Frequency step5K/6.25K/12.5K/25K

  •   RF Output Power 1W  

  •   voice encryption (scrambling): 8 type.

  •   Voice Compression- Expansion

  •   SMS Receive /TransformerThe space Baut : 1200

  •   CTCSS38 group+ CDCSS83 group

  •   Automatic elimination tail

  •   Volume adjustable1-9);

  •   Vox level adjustable0-8);

  •   SQ level adjustable0-9);

  •   MIC sensitivity level adjustable1-8

  •   The ultra low power dissipation in Sleep Mode0.1uA;

  •   Power supply DC 3.35.0V

  •   Ultra small size18 * 35 * 3.2MM

  •   Communication distancemore than 5 KM in open area .

Applications 

  portable intercom and paging systems

  wireless data transmission

  mobile phones and other  embedded in radio  functions  product

Portable walkie-talkie,

Outdoor sports equipment,

 Building security,

 Audio monitor system


 4. Module mechanical size

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                   bottom view

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5. Module pin assignment

J1 pin name

Pin number

Function description

SQ

1

Squelch control

0: active

VOX_DET

2

1)  with VOX modeit is the VOX state indication

0 Talk finished

1 Talking

2)  without VOXit is the transmitter state indication

0 receive state

1 transmitter state

 

AF_OUT

3

Audio output

MIC1(NC)

4

NC

PTT

5

PTT control

1Receive

0Transmit

PD

6

Sleep control

0 into sleep state

1 Running

 

H/L

7

RF transmit power selection

0 0.5W;

NC 1W;

Note: if you want a 1w power ,just leave this pin NC, it can’t be pull high.

BAT

8

Power supply: DC 3.3V -  5V

GND

9

GND

GND

10

GND

NC

11

NC

ANT

12

Rf Antenna input;

NC

13

NC

NC

14

NC

NC

15

NC

RXD

16

UART - Rxd

TXD

17

UART - Txd

MIC_IN

18

Microphone input;

 

 

6. Typical application Block diagram   

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