MQTT stands for Message Queuing Telemetry Transport and it's a great way to be able to see Meshtastic traffic if you can't link to any other nodes via the 868MHz LoRa radio mesh. Be careful how you use it however, as you can flood the radio network with traffic which could cause it to become saturated. Recommendation is to turn off MQTT to prevent this.

The Facebook group I mentioned is Meshtastic Brighton   / 3696312513946679  
A much larger Facebook group is Meshtastic UK
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