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SR-FRS-2WUS 400MHz-470MHz 2W UHF Analog walkie talkie module

ODL22090805

SR-FRS-2WUS 400MHz-470MHz  is 2W 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.

$7.00
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Description

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;  

Features

FM demodulation technique Based on digital signal processing technology;

Frequency Range:UHF 400M~470MHZ;

Frequency step:5K/6.25K/12.5K/25K;

RF Output Power: 2W/1W/0.5W

voice encryption (scrambling): 8 type.

Voice Compression- Expansion ;

SMS Receive /Transformer,The space Baut : 1200;

CTCSS(38 group)+ CDCSS(83 group) ;

Automatic elimination tail ;

Volume adjustable(1-8);

Vox level adjustable(0-8);

SQ level adjustable(0-9);

MIC sensitivity level adjustable(1-8)

The ultra low power dissipation in Sleep Mode(0.1uA);

Power supply :DC 3.3~5.0V

Ultra small size:17*28.5*3.0mm

Communication distance:more 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

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

 

Typical application Block diagram

MetInfo enterprise content manager system | MetInfo CMS

 

Product Details
ODL22090805
200 Items
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SR-FRS-2WUS 400MHz-470MHz 2W UHF Analog walkie talkie module

SR-FRS-2WUS 400MHz-470MHz  is 2W 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.

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