SR_FRS_2WUS

SR_FRS_2WUS Walkie Talkie Transceiver /Data transfer Module  UHF(400M-470M)2. Product Outline    The SR_FRS_2WUS  is a low cost but high performance integrated walki

  • Model: SR_FRS_2WUS
  • Type: Analog
  • Band: UHF 400M-470M
  • Transmit Power: 2W
  • Receive sensivitity: -122DBM
  • Size: 17*28.5*3.0mm

SR_FRS_2WUS 

Walkie Talkie Transceiver /Data transfer Module  

UHF(400M-470M)

2. Product Outline

    The SR_FRS_2WUS  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 2W output . In open area, it can come to performance of 9Km 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 70 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 400M470MHZ

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

  •   RF Output Power 2W/1W/0.5W

  •   voice encryption (scrambling): 8 type.

  •   Voice Compression- Expansion

  •   SMS Receive /TransformerThe space Baut : 1200

  •   CTCSS38 group+ CDCSS83 group

  •   Automatic elimination tail

  •   Volume adjustable1-8);

  •   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 size17*28.5*3.0mm

  •  Communication distancemore than 9 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 package

 4.1 Module pin assignment for TOP VIEW.

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                   Top  view

4.2  Module  package size

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4.3 Module pin assignment description

Pin number

pin name

IO

Function description

1

SDA


Program only,  user unused

2

CLK


Program only, user unused

3

I/O


Program only, user unsed.

4

AF_OUT

OUT

Audio output

5

MIC

IN

Micphone input

6

HML

IN

Transmit power selection:

GND: 0.5w

NC:  2W

1.5V: 1W  (unuseful)

7

ANT

IN/OUT

 Antenna

8

GND

GND

GND

9

MIC_IN

IN

Microphone input;

10

B+

OUT

 Module power supply

11

VOX

OUT

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

12

RXD

IN

UART_RXD

13

PTT

IN

PTT control

1Receive

0Transmit

14

SQ

OUT

Squelch control

0: active

15

TXD

OUT

UART_TXD

16

PD

IN/OUT

Module power control:

1: Power on

0: Power off

17

VCC


+3V output

18

GND

GND


 

 

 

 

5. Typical application Block diagram    

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