3U Professional Multi-protocol Digital Trunking Repeater
3U
3U Professional DMR Repeater is more than just a communication device; it’s a robust solution designed to meet the diverse needs of industries such as public safety, transportation, utilities, and more. Its versatility and advanced features make it the perfect choice for organizations seeking dependable and high-performance communication solutions.
Product Orientation Map
Features
Specifications
Accessories
•Built-in Duplexer
The 3U comes with a built-in duplexer, allowing for convenient and flexible deployment. Its high computing efficiency and faster processing speed effectively expand communication range and functionality.
•Outstanding Heat Dissipation
The 3U features an innovative heat-pipe cooling system that rapidly disperses heat, ensuring the device operates smoothly and stably under long-term high-power conditions.
•Advanced RF Technology
Equipped with next-generation RF technology, the 3U provides high sensitivity and strong noise suppression. Combined with digital error correction from the vocoder, it delivers clear voice transmission even in the high-noise environments.
•Large Touchscreen
The 3U uses a 5-inch industrial-grade touchscreen, enabling users to conveniently modify various parameters through an intuitive interface. For example, users can view or change channels, sites, and other information with different access permissions.
•Multiple Communication Protocols: DMR / NXDN
It supports analog communication and multiple digital communication protocols including DMR, and NXDN, enabling an easy upgrade from analog to digital. Advanced signal processing technology is adopted to greatly improve spectrum efficiency.
•IP Networking / Trunking (Optional)
The 3U can be equipped with an intelligent IP controller or trunking controller, achieving seamless integration between traditional radio communication systems and IP networks. When combined with trunking functionality, it significantly extends the communication range and capabilities of the wireless system.
•Dispatch Function (Optional)
When used with Lisheng handheld terminal products, it enables dispatching functions such as back end recording, route playback, log inquiry, voice dispatching, short message dispatching, and remote control.
•5–50W Omni-Directional Coverage
The 3U digital repeater adopts advanced RF technology and a high-power amplifier design. With adjustable transmission power from 5W to 50W and full-band operation, it can flexibly meet the diverse needs of various industries even under harsh conditions. It greatly enhances terminal communication coverage and provides clear, high-quality voice transmission services.
Appearance Introduction

Product Accessories
Programming Cable
AC Power Cable
Microphone
| General | |
| Frequency Range |
UHF1: 400-470 MHz; UHF2: 450-520 MHz; UHF3: 350-400 MHz VHF: 136-174 MHz |
| Channel Capacity | 500 |
| Zone Capacity | 32(MAX.32channels each zone) |
|
Dimension (LxWxH) |
430×480×135mm |
| Weight | 14.42Kg |
| Input power(AC) | 110V/220V |
| Input voltage(DC) | 13.6V±15% |
| Current(Standby) | <800mA |
| Current(Transmit) | <11A |
| Current(Receive) | <1900mA |
| Frequency stability | ±0.5ppm |
| Antenna Impedance | 50Ω |
| Vocoder type | AMBE+2 |
| RFConnect | Tx(N)、Rx(N) |
| LCD | 800*480pixel, 65536color, 5.0inch |
| Intelligent IP Controller | |
| CPU | Freescale i.mx6Q 4Core |
| RAM | 1G DDR3 |
| ROM | 8G |
| SD Connector | Micro SD,Max 128G |
| Display Interface | 24bit_RGB |
| USB Connector | Mini USB2.0 (OTG) |
| Network Interface | 10/100/1000 Mbps Ethernet |
| Receiver | |
| Channel Spacing | 6.25KHz/12.5KHz/25KHz |
|
Sensitivity Analog |
0.18μV(typ.) (FM@12dB SINAD ) |
|
Sensitivity Digital |
0.18μV@5%BER |
| Channel Selective |
62dB@6.25kHz 70dB@12.5kHz 75dB@25kHz |
| Intermodulation | 70dB |
| Block | 95dB |
|
Spurious response suppression |
90dB |
|
Audio Output power(<5%) |
2.0W / 8Ω |
|
Conducted emission spurious |
<-57dBm |
| Transmitter | |
| Output Power | 5~50W |
| Channel Spacing | 6.25kHz /12.5kHz/25kHz |
| Emission Spurious |
-36dBm(≤1 GHz) -30dBm(>1 GHz) |
| FM Modulation |
16K0F3E @25kHz 11K0F3E @12.5kHz |
|
4FSK Digital Modulation |
Only Data: 7K60FXD @12.5kHz Voice & Data: 7K60FXW@12.5kHz Only Data: 4K00F1D@6.25kHz Voice & Data: 4K00F1W @6.25kHz |
| Audio Distortion | ≤3% |
| Audio Response | +1 ~ -3dB |
| FM Hum & Noise |
40dB @12.5KHz 45dB @25KHz |
| Digital FSK Error | <1.5% |
|
Adjacent channel Power |
60dB @12.5KHz 70dB @25KHz |
|
Adjacent Channel Transient Power |
≤-50dB @12.5KHz ≤-60dB @25KHz |
Product accessories
Programming Cable
AC Power Cable
Microphone
About Us
Products
Solution
Contact Us
Service line
+86-(0)595-22471179
#5, Chongxiang Street, Econ.&Tech. Area, Quanzhou, Fujian, China.
WeChat:+86-15257537337; +86-13615902728
E-mail:sales@cnlisheng.com