Long Distance Communication Solution for Mine Rescue

Communication in tunnels and mines has always been difficult. Walkie talkies are the main communication tool used in tunnels and mines. There are a lot of walkie-talkies on the market, but how should we choose a suitable one? I hope Brain's experience can help you.

Brain from the United States has been engaged in mine rescue work. Recently, we received his feedback.

Below are his scenarios and ways of use;

" Imagine an underground mine, it's extremely difficult for radios, there is first of all a 150m slope shaft with stairs, then random rock pillars, with irregular tunnels .
I was able to.

Place 1 RB24 on surface in an office
Place 1 RB24 at bottom of the slope
Place the RB91 35m away through doors and round a corner
Several other RB24 through the workings

We were able to maintain communications with just 5 handsets over possibly 500m of very difficult conditions
I will be trying it more and more, but yes I was pleased.

Also, you will see the photos, I placed everything bolted in a pelican box, with a small metal bracket for a magnetic antenna well away from the RB91, the antenna reversed in the box. antenna reversed in the box for carrying, yet with the long coax, the antenna placed higher if required
This enables everything to be carried as one, the base station charged still in the case, and very easy set up. "

Retevis RB91+RB24 Digital Direct Frequency Long Range UHF Radio Kit

The Retevis RB91+RB24 is designed for communication in confined environments such as tunnels and mines.

What are the key benefits of this kit?

First of all, the Retevis RB91 wall mounted digital repeater has strong penetration power to boost the signal and extend the signal coverage.The built-in 15,000mAh battery allows for 7 days of standby.

Secondly, the Retevis RB24 handheld walkie-talkie comes with a repeater function. It can be automatically networked and can perform up to 30 levels of continuous hopping to meet the ultra-long communication distance in areas without signal.

Finally, 30 levels of continuous hopping, can be part of the handheld or repeater can be directly interoperable. This is also an important function for it to realize long-distance communication in confined environment.

In addition, this solution utilizes the LoRa standard. LoRa's biggest feature is that it can carry out long range communication.The technology proposes a new communication technology that can realize long distance, long battery life, large system capacity and low hardware cost. Stable connectivity is guaranteed even in closed areas such as basements, subways and tunnels.

Click here or click on the image to purchase!