meshtastic/docs/about/overview/index.mdx
2022-11-03 20:10:08 -04:00

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---
title: Overview
sidebar_label: Overview
slug: /overview
sidebar_position: 2
---
## How it works
When you send a message on your Meshtastic companion app, it is relayed to the radio using Bluetooth. That message is then broadcast by the radio three times over a certain interval in order to create redundancy for lost packets.
When a receiving radio captures a packet, it checks to see if it has heard that message before. If it has it ignores the message. If it hasn't heard the message, it will rebroadcast it at a certain interval three times.
For each message a radio rebroadcasts, it marks the "hop limit" down by one. When a radio receives a packet with a hop limit of zero, it will not rebroadcast the message.