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
■ 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
■ Embedded EEPROM, data saved even power off
■ 1ppm TCXO, stable performance
Application
■ Small professional walkie talkie
■ Invisible intercom system
■ Building community security system
■ Sport products
■ Handheld / Pocketable device
■ Audio surveillance system
Electrical Characteristics
Application circuit
Pin definition
Mechanical dimension
SA858A:
SA858B、SA858-PJ：
