Home - Products - Portable DMR Radio

Portable DMR Radio

LS-T278

The LS-T278 professional digital radio is designed for high-demand industry communication scenarios, combining clear voice quality with comprehensive safety features. The device supports AES-256 encryption as well as remote monitoring, deactivation, and activation, providing full protection for communications and assets. Dual-slot direct mode improves spectrum efficiency, while single, group, and all-call functions enable flexible dispatch for multi-team operations. Equipped with intelligent noise reduction and VOX hands-free operation, the radio maintains effective communication even in noisy environments. Low battery alerts and programmable keys further enhance ease of use and reliability in the field. The LS-T278 delivers a stable, secure, and easily managed professional digital communication experience.

Product Orientation Map

GET A QUOTE

Features

Specifications

Accessories

■AES256 Encryption

Utilizes the AES256 encryption to ensure the utmost security of communications and enhance information safety.

 

■Noise Cancellation

Reduces ambient and background noise using intelligent algorithms, ensuring that the user’s voice is transmitted clearly even in noisy environments such as construction sites, warehouses, or outdoor operations.

 

■VOX

Automatically triggers transmission when the user speaks, allowing hands-free communication. This is especially useful for personnel who need to keep both hands free for tasks like handling equipment, driving, or field inspections.

 

■Programmed Buttons

Allows frequently used functions to be assigned to customizable keys, enabling one-touch access for rapid operation. Users can configure keys based on role requirements, improving efficiency in high-frequency or emergency situations.

 

■Power Saving 

Automatically reduces power consumption when the radio is idle, extending battery life and ensuring the device can operate for a full shift or extended fieldwork.

 

■Power Save Delay

Keeps the radio fully active for a configurable period before entering power-saving mode, preventing interruptions during short pauses in operation while still conserving energy over time.

 

■Low Battery Alert

Provides visual or audio warnings when battery levels drop below a preset threshold, allowing users to plan recharging in advance and avoid sudden communication loss during critical tasks.

 

■Remote Kill/Revive/Stun

Enables authorized control to remotely disable, reactivate, or temporarily disable the radio in case of loss, theft, or misuse. This protects sensitive communications and prevents unauthorized use.

 

■Call Alert

Generates audible and/or visual notifications when receiving a call, ensuring that incoming communications are noticed promptly, even in noisy or visually distracting environments.

 

■Auto Power-off

Automatically turns off the device after a preset period of inactivity to save battery, ensuring energy efficiency without manual intervention.

 

■Talk Around

Allows direct communication between radios without relying on a repeater or network infrastructure. This is ideal for areas with limited coverage or emergency scenarios where standard network resources are unavailable.

 

■Frequency Hopping

Automatically switches transmission frequencies during operation to reduce interference and eavesdropping, enhancing communication security and reliability in sensitive or congested environments.

Appearance Introduction


Product Accessories

  • Charger Pod

    Charger Pod

  • Antenna

    Antenna

  • AC Adaptor

    AC Adaptor

  • Hand Strap

    Hand Strap

  • Belt Clip

    Belt Clip

  • Battery

    Battery

General
Frequency Range 136~174MHz,350~400MHz
400~470MHz,450~520MHz
Channel Spacing 12.5 KHz / 25 KHz
Channel 48 Channels
Zone Capacity 3 Zones
Operating Voltage 7.4V
Battery Capacity 1000mAh
Battery Life (5/5/90) Analog: 6.7 hours ; Digital: 8.8 hours
Vocoder Type AMBE+2
Frequency Stability ±1.0ppm
Antenna Impedance 50Ω
Dimensions (without Antenna) 4.88"H x 2.44"W x 1.54"D (124mm*57mm*39mm)
Weight 7.73oz(219g)


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) / ≤5W (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

  • Charger Pod

    Charger Pod

  • Antenna

    Antenna

  • AC Adaptor

    AC Adaptor

  • Hand Strap

    Hand Strap

  • Belt Clip

    Belt Clip

  • Battery

    Battery

If you have any questions about this product, please fill out the form below to reach us!