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  • Quality High Power VHF 136-174MHz Tetra Signal Booster for Public Safety Network Indoor Coverage factory
  • Quality High Power VHF 136-174MHz Tetra Signal Booster for Public Safety Network Indoor Coverage factory
  • Quality High Power VHF 136-174MHz Tetra Signal Booster for Public Safety Network Indoor Coverage factory
  • Quality High Power VHF 136-174MHz Tetra Signal Booster for Public Safety Network Indoor Coverage factory

High Power VHF 136-174MHz Tetra Signal Booster for Public Safety Network Indoor Coverage

Basic Properties
Place of Origin: China Shenzhen
Brand Name: ATNJ
Certification: CE ROHS
Model Number: AT33-UHF/VHF
Trading Properties
Minimum Order Quantity: 5
Payment Terms: T/T,Western Union,Paypal,Bank transfering
Supply Ability: 1000 units per month
Specifications
Bandwith: 0.2 - 18MHz(Customized) Frequency Range: VHF, UHF, 700/800MHz
Max. Gain: 80--90dB Weight: ≦ 3kgs
Power Consumption: 50--100Watt Bands Support: VHF, UHF,
Network Protocols: TETRA/P25/DMR/GSM/WCDMA/LTE/NR/WiFi
Product Description
High Power VHF 136-174MHz Tetra Signal Booster for Public Safety Network Indoor Coverage

ATNJ VHF Band BDA (Bi-Directional Amplifier) is a high-performance communication device designed to receive signals in the VHF frequency range and retransmit them at higher power or to a different location. These BDAs play an essential role in extending the communication range of VHF radios, particularly in areas where obstacles or rugged terrain would otherwise hinder direct radio transmission.

Optimized for the VHF Band (136 MHz – 174 MHz)

The ATNJ VHF Band BDA operates across the 136 MHz to 174 MHz spectrum – the standard VHF band used by public safety, marine, aviation, and land mobile radio systems. By amplifying both uplink and downlink signals, our BDA ensures clear, reliable voice and data communication even in:

  • Mountainous regions and valleys

  • Dense urban environments with tall buildings

  • Underground parking garages and tunnels

  • Remote industrial sites with limited line‑of‑sight

UHF Bi-Directional Amplifier product view UHF Bi-Directional Amplifier technical details
Built on P25 & TETRA Standards
P25 (Project 25) and the analogous TETRA systems are the bedrock upon which modern Public Safety Networks (PSNs) are being built. These open standards ensure interoperability, security, and mission‑critical reliability for first responders.
Addressing Communication Challenges
Rising frequency exhaustion, bandwidth congestion, and an increasing number of transmission sources have driven the need to allocate dedicated frequencies to PSNs. The choice of P25 and TETRA is dictated by:
  • Seamless operation with existing analog equipment
  • Expandable functionality - easy adoption of new technologies
  • Higher load capacity - supporting more users and data traffic
  • More complete coverage - eliminating dead zones inside complex buildings
  • Superior RF propagation - critical for penetrating concrete, steel, and low‑E glass
Technical Specifications
Model AT27-VHF/UHF AT33-VHF/UHF AT37-VHF/UHF
Output Power 27dBm 33dBm 37-43dBm
System Gain (Air Coupling) 80dB 85dB 90dB
Supported Bands VHF, UHF, 700/800MHz VHF, UHF, 700/800MHz VHF, UHF, 700/800MHz
Supported Bandwidth 0.2 - 18MHz 0.2 - 18MHz 0.2 - 18MHz
Supported Channel Numbers Up to 32CH Up to 32CH Up to 32CH
Power Consumption < 50W < 80W < 150W
Key Advantages
  • Intelligent to guide the installation with LCD
  • Real time display of signal strength
  • Automatic dormancy when no user is making calls
  • Automatic alarm when installation mistake occurs and provides corresponding solution
  • Automatic adjustment of system gain to avoid repeater self-excitation
  • Initiative reminding when the device is damaged
  • Supports from 0.2 to 30MHz bandwidth adjustment (Customized), supports 5G bandwidth, 40MHz, 50MHz, 60MHz, 70MHz, 80MHz, 90MHz, 100MHz (Frequency Bandwidth Customized)
  • WiFi Monitor+Control (Customized), NMS (network management system), Function Optional
Product Applications
Product application diagram
About Our Company
Shenzhen ATNJ Communication company overview
Located in Guangming District Shenzhen, Shenzhen ATNJ Communication is a professional RF manufacturer mainly engaged in R&D, production, manufacturing, sales, and technical services with 16 years of experience. The main products include Digital LTE/NR series repeater, SDR core board, Passive devices, Digital DAS system, and technical solutions for Public and Private (VHF, Tetra) network base station, Wireless frequency modules. Meanwhile, we undertake OEM, ODM services and projects of various RF, wireless repeaters, multi-frequency DAS systems, remote network management center OAM, and equipment provision of indoor and outdoor signal coverage projects.
Nowadays, our digital repeaters not only reach 12 subbands simultaneously with local and remote control+monitor, but also are supplied to signal operators and communication integrators worldwide, providing signal coverage solutions for residential areas, office buildings, supermarkets, basements and rural areas.
ATNJ Communication manufacturing facilities
More mature digital band-selective repeaters were put into overseas mobile operator markets successfully. Our product field extends to Public Safety and Low altitude economic construction applications which include Public and Private Network Digital Multi-subband Repeater wireless signal repeater, Integrated Base Station, Civil countermeasure and phased array radar technology. Furthermore, Digital fiber multi-frequency, UHF, Tetra, VHF, Microwave frequency shift repeaters are realized. With the progress of science and technology, easier-to-use, more functional and intelligent RF products are being developed. We look forward to collaborating with you to create a brighter future together.
Contact Us
Ready to elevate your next project? Our R&D team is here to help you succeed.
Get in touch today:
Whatsapp: +8618813582037
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Mr. Wave Luo

Sales Manager