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PMR 446 WALKIE TALKIE

LS-313S

Lisheng’s portable digital terminal is built for lightweight comfort and dependable communication. Its compact design offers an almost weightless wearing experience, with flexible ear-hook and clip-on options that keep users free on the move. Robust interference suppression and low-battery alerts help ensure clear, continuous conversations, while dual-mode compatibility integrates smoothly with existing systems. With all-day endurance, it delivers a professional, reliable, and comfortable communication experience for frontline service environments.

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Features

Specifications

Accessories

■ High/Low Power Switching

Users can select 2 W high power or 0.5 W low power according to distance and environment, balancing coverage with battery efficiency.

 

■ VOX (Voice-Operated Transmit)

VOX enables automatic transmission triggered by the user’s voice. Calls can be made without pressing any keys or holding the radio, improving efficiency in tasks that require both hands.

 

■ Scan Function / Scan List

Multiple channels can be added to a programmable scan list. The radio automatically scans and locks onto active channels, ensuring important calls are detected promptly in multi-team environments.

 

■ Lone Worker Function

Triggers an alarm automatically if no user response is detected within a preset time, providing proactive safety monitoring for personnel working alone.

 

■ Low Battery Alert / Battery Level Indication

Notifies the user when battery levels are low, helping prevent unexpected shutdown and ensuring reliable communication during critical operations.

 

■ Bilingual Voice Announcements

Key operating statuses—such as channel changes, alerts, and battery notifications—are announced through voice prompts. English/Chinese language options help users operate the radio correctly with minimal training.

 

■ Programmable Keys

Frequently used functions can be assigned to programmable keys. Users can customize controls based on operational needs, enabling quicker access and more efficient field operation.

Appearance Introduction

Product Accessories

  • Earphone

    Earphone

  • Charging Cable

    Charging Cable

  • AC Adaptor

    AC Adaptor

  • Magnetic Charging Cable

    Magnetic Charging Cable

General
Frequency Range 400~470MHz
Channel Spacing 12.5 KHz / 25 KHz
Channel 256
Zone Capacity 8  Zones
Operating Voltage 7.4V
Battery Capacity 950mAh
Vocoder Type AMBE+2
Frequency Stability ±1.0ppm
Antenna Impedance 50Ω
Dimensions (without Antenna) 67mm*32.5mm*27.5mm

Receiver
Analog Sensitivity 0.2μV (12dB SINAD)
Digital Sensitivity 0.22μV (Typical) (BER 5%)
Adjacent Channel Selectivity 60dB @ 12.5KHz / 65dB @ 25KHz
Intermodulation Rejection 60dB @ 12.5KHz / 60dB @ 25KHz
Blocking 84dB @ 12.5KHz /84dB @ 25KHz
Co-Channel Rejection -12dB @ 12.5KHz
 -8dB @ 25KHz
Spurious Response Rejection 65dB @ 12.5KHz / 65dB @ 25KHz
Rated Audio Output Power 1.0W /16Ω 
Conducted Spurious Emission <-57dBm(9KHz~1GHz)
<-47dBm(1GHz~12.75GHz)

Transmitter
RF Power 1W (Low) / ≤2W (High)
Power Margin Variation +2/-3dB (under Extreme Conditions)
Frequency  Error ±1.0ppm
FSK Error <5%
4FSK Transmission
Bit Error Rate (BER)
≤1×10-4
4FSK Modulation
Frequency Deviation Error
≤10.0%
Occupied Bandwidth (DMR) ≤8.5KHz
TX Attack/Release Time ≤1.5ms
Adjacent Channel Power ≤-50dB @12.5KHz /≤-60dB @25KHz 
Transient Adjacent Channel Power ≤-50dB @ 12.5KHz / ≤-60dB @ 25KHz
FM Modulation 16K0F3E @25KHz/
11K0F3E @12.5KHz
4FSK Digital Modulation 12.5KHz(data only):7K60FXD
12.5KHz(data+voice):7K60FXE
Audio Distortion ≤3% @ 40% Deviation
Audio Response +1 ~ -3dB
FM Hum and Noise 40dB @ 12.5KHz / 45dB @ 25KHz
Spurious Emission ≤-36dBm (9KHz~1GHz)
≤-30dBm (1GHz~12.75GHz)

*The above specifications are tested in accordance with applicable standards. Due to the continuous development of technology, the above index data are subject to change without notice.

Product accessories

  • Earphone

    Earphone

  • Charging Cable

    Charging Cable

  • AC Adaptor

    AC Adaptor

  • Magnetic Charging Cable

    Magnetic Charging Cable

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