Kingtone Long Range Metro Tunnel Project Tetra UHF VHF DMR Walkie Talkie Signal Bi-directional Amplifier/BDA

Glad to share some types of Tetra BDA System for your reference, hope that workable for you.

TETRA (Terrestrial Trunked Radio)
BDA (Bi-Directional Amplifier)

TETRA Repeaters Coverage Solution Systems Realizing In-Building and Tunnel Coverage for Critical Communications.
We are using BDA Repeater and fiber optic repeater for UHF .Motorola Solutions Extends TETRA Radio Coverage;
VHF channels for police, fire brigade, and ambulance services

There can be 3 Types:
1, Tetra BDA Trunk Amplifier System;
2, Tetra BDA Band Selective Repeater System ;
3, Tetra BDA Fiber Optic Repeater System ;

Main Features:

High linearity PA; High system gain;
Intelligent ALC technology;
Full duplex and high isolation from uplink to downlink;
Automatic Operation convenient operation;
Integrated technique with reliable performance;
Local and remote monitoring (optional) with automatic fault alarm &remote control;
Weatherproof design for all weather installation;