Retevis Long Range Communication System-RB91+RB24

Two-way radio communication system for basement tunnels - Retevis RB91 repeater + RB24 handheld radio. Effective communication over radios in concrete basements can be challenging due to interference caused by dense materials. However, there are strategies you can try to improve the range and quality of communication. Today we'll explain Retevis' solutions for long range communications in basements, tunnels and highly dense material environments.

RB91 Direct Frequency Digital Repeater with 2PCS RB24 UHF Handheld Radio

About Retevis RB91+ Retevis RB24 is a wall-mounted digital radio repeater paired with a strong penetrating handheld radio. LoRa technology is utilized. Both the repeater and handheld radio have built-in LoRa module. With low power consumption and wide coverage, stable connection is guaranteed even in closed areas such as basements, subways and tunnels.

Retevis RB91 wall-mounted digital repeater has strong penetration to enhance the signal and extend the signal coverage, and has a built-in 15,000mAh battery for 7 days standby.

The Retevis RB24 handheld walkie-talkie comes with a repeater function for automatic networking and up to 30 levels of continuous hopping to meet ultra-long communication distances in areas without signal.

What is LoRa technology?

As one of IoT communication technologies, LoRa is a kind of ultra-long distance wireless transmission technology based on the spread spectrum transmission techniques and CSS (chirp spread spectrum) modulation, which is one of the IoT communication technologies. Its name comes from the abbreviation of “long range”. It can be seen from the name, the biggest feature of LoRa is the long distance communication. LoRa’s spread spectrum technology changes the balance between transmission power consumption and transmission distance, and completely changes the situation in the field of embedded wireless communication. This technology presents a new communication technology that enables long-distance, long battery life, large system capacity and low hardware costs to meet the IoT needs.

Advantages

1. Out-of-the-box no setup is required, and calls can be made directly between handstands and handstands, between repeaters and repeaters, and between handstands and repeaters without any setup.

2. The repeater can be fixed on the wall and can also emit sound. The handset can form a communication network with the repeater. The fixed and movable form can help you realize the communication grid construction.

3.Retevis RB24 handheld digital walkie-talkie comes with a repeater function, can be automatically networked, up to 30 continuously connected to the walkie-talkie, to meet the no-signal areas of the ultra-long communication distance.

4.Retevis RB91 equipped with 15000mAh battery standby can provide 7 days of standby time and 10 hours of working time. Meanwhile, the relay supports solar panel charging.

Applicable Scenarios

This combo is suitable for basement parking lots, tunnels, large resorts, inside buildings and other scenes. Suitable for the crowd suitable for people who need a large number of team members, need fixed communication location and decentralized communication.