ماژول فرستنده و گیرنده صدا فرکانس 136 تا 174 مگاهرتز توان 1 وات مدل SR_FRS_1WV
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توضیحات
The SR_FRS_1W (VHF:136M-174MHZ) 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 3.5Km 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.
The more important feature is this module support the data transfer
1) Data/SMS transfer ability; up to 100 byte can be sent at one time; .
2) DTMF transfer , 0-9,A-F can be sent;
2. Product performance
l FM demodulation technique Based on digital signal processing technology；
l Frequency Range：VHF 136M～174MHZ
l Frequency step：5K/6.25K/12.5K/25K；
l RF Output Power： 1W /0.5W selectable;
l voice encryption (scramble): 8 type.
l Voice Compression- Expansion ；
l SMS Receive /Transformer，The wireless Baut : 1200；
l CTCSS（38 group）+ CDCSS（83 group） ；
l Automatic elimination tail ；
l Disable Transmit when busy(BCLO)；
l Volume adjustable（1-9）；
l Vox level adjustable（0-8）；
l SQ level adjustable（0-9）；
l MIC sensitivity level adjustable（1-8）
l The ultra low power dissipation in Sleep Mode（0.1uA）;
l Power supply ：DC 3.3～5.0V
l Ultra small size：18 * 35 * 3.2MM；
l Communication distance：up to 3.5 KM in empty field.
Applications：
portable intercom and paging systems；
wireless data transmission；
mobile phones and other embedded in radio functions product 。
3.Module package and mechnical size
(View from bottom)
( View from Top ) ( View from Bottom)
4. Module pin assignment
| pin name | Pin number | Function description |
| SQ, | <fon, t=”” ,=””>1</fon,> | Squelch control 0: active |
| VOX_DET | 2 | 1） with VOX mode，it is the VOX state indication； 0： Talk finished； 1： Talking； 2） without VOX，it is the transmitter state indication； 0： receive state 1： transmitter state
|
| AF_OUT | 3 | Audio output |
| MIC1(NC) | 4 | NC |
| PTT | 5 | PTT control 1：Receive； 0：Transmit |
| 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; |
5. Typical application Block diagram
5.1 without MCU
5.2 Works with MCU
6. Electrical Characteristics
For detail specification ,Please contact us: sales@sunrisedigit.com
7. Serial communication protocol
SR-FRS-1W module has the AT instruction interface, the AT instruction can be used to communicate with or control the module；the AT instruction covered all the inquiry and control command; For detail please refer our company 《SR-FRS-1W UART communication protocol》
8.Comment
1、 The default parameter for this module after power on are as bellow:
GBW=12.5KHZHZ，
TFV=140.050MHZ,
RFV=140.050MHZ，
CTCSS=01， ( For both Transfer and receive)
SQ=2,
Scramble: OFF
Comexpanding: OFF
2、 The PTT pin cann’t be pulled to Lo when in data transfer mode.
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