SA858 kit 4W Walkie Talkie Module UHF VHF Band High Power Long Range All-in-one

SKU: SA858-KIT-001
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$77.00 $175.00
SA858 is a professional 4W walkie talkie module. Strong RF circuit, DSP, digital interface, and audio amplifier is built in. Besides Uart command, user can use our provided PC software to configure all the parameters.
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  • SA858 kit 4W Walkie Talkie Module UHF VHF Band High Power Long Range All-in-one
  • Description
  • SA858 is a professional 4W walkie talkie module. Strong RF circuit, DSP, digital interface, and audio amplifier is built in. Besides Uart command, user can use our provided PC software to configure all the parameters. The parameters includes: Tx frequency, Rx-frequency, Tx CTCSS /CDCSS, Rx CTCSS/CDCSS , digital volume and SQ. To avoid the heating for this high power walkie talkie, we have done special handling on the software with a strong radiator added, which makes it has no problem for long time continuous working.
  • When SA858 is connected with SA858-PJ, it is easy to organize a professional all in one walkie talkie system, the system include 16 predefined frequency channels, adjustable volume, configurable CTCSS/CDCSS. User need only to connect with power supply and speaker.
  • Simplified interface and ultra small size make SA858 widely used in various applications and conveniently embedded into various handheld devices.

Features

  • UHF band 400~480 MHz
  • VHF band 134~174 MHz
  • 350 band frequency:320-400MHz  (3 frequency bands are optional)
  • Tx and Rx frequency can be set alone
  • Band width 12.5/25 KHz
  • Output power up to 4W
  • Distance up to 7 to 10 km in Open area
  • High sensitivity:-124 dBm
  • High integrated and small size
  • 38 CTCSS & 166 CDCSS (can be set by PC software and serial port)
  • 8 adjustable digital volume
  • Analog volume adjustable limitless
  • High / low output power selection(1W/4W)
  • Wide range of working voltage 3.3-9 V
  • 1ppm TCXO, stable performance

Application

  • Small professional walkie talkie
  • Invisible intercom system
  • Building community security system
  • Sport products
  • Handheld / Pocketable device
  • Audio surveillance system

★ Note:In high level, the pins are in 3.3V.

Parameter Test condition Min. Typ Max. Unit
Operating voltage range -- 3.3 8 9 V
Operating temperature range -- -30 20 70
Power Consumption
Sleeping Current -- -- ≤3   uA
RX current -- -- 60   mA
TX current (high output power) @8v, 424.75MHz 1400 1500   mA
TX current (low output power) 850 900   mA
TX current (high output power) @4V, 424.75MHz 1100 1150   mA
TX current (low output power) 650 700   mA
TX Frequency Parameter
Operating frequency range UHF 400 450 480 MHz
VHF 134 150 174 MHz
TX current (high output power) @VCC=4.0V 30 31 32 dBm
TX current (low output power) 26 27 28 dBm
TX current (high output power) @VCC=8.0V 35 36 36.5 dBm
TX current (low output power) 30.5 31.5 32 dBm
Modulation frequency @1.5KHz/2.5KHz frequency deviation   10   mV
Audio modulation distortion @1.5KHz/2.5KHz Frequency deviation -- 2 5 %
Signal to Noise Ratio @1.5KHz/2.5KHz frequency deviation 38 40 45 dBm
Adjacent Channel Ratio @12.5K offset -- -60   dBc
CTCSS Modulation frequency   0.35 0.5 0.75 KHz
RX Frequency Parameter
RX sensitivity 13dB output audio SNR -- -124 -- dBm
RX SNR @1.5 KHz Frequency deviation 45 50 -- dB
Audio output power -- -- 2 -- W
Audio output impedance -- -- 8 -- OHm
 

 

Typical application circuit
SA858 Typical application circuit

 

 

Pin definition

SA858 Pin Definition

Pin No. Pin name Description
1 MIC+ Connect positive of external microphone
2 GND Connect negative of external microphone or power ground
3 SPK/VOL Eternal connect 8 ohm and 2W speaker and volume adjust electronic equipment
4 SPK Audio output pin, external connect 8oHm and 2W speaker
5 H/L RF high and lower power pin,connect“0” is lower power,off is high power
6 VOL Audio volume adjust pin,external connect 200K adjustable electronic equipment
7 GND External connect negative power
8 RXD Data receive serial port
9 TXD Data send serial port
10 VOXEN Volume enable pin,“0” is open volume control function,“1”is close,default is“1”
11 PTT Send/receive control pin,“0”is send;“1” is receive,default is receive
12 8 Frequency 16 channels, 8421code,No.8 bits,default is“1”output
13 4 Frequency 16 channels, 8421code,No.4 bits,default is“1”output
14 2 Frequency 16 channels, 8421code,No.2 bits,default is“1”output
15 1 Frequency 16 channels, 8421code,No.1 bit,default is“1”output
16 PD Module sleep enable,“0” is sleep mode;“1”normal working,default is normal working mode
17 VCC Connect positive power
18 GND Connect negative power
19, 21 GND Connect antenna ground
20 ANT RF signal output,external connect 50oHm antenna

 

Mechanical dimension

 

SA858 Mechanical Dimensions

Datasheet Download

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