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Site: how-tos and the FAQ (phase 3)
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Eight how-to recipes and a FAQ page with a list of its questions, from the
README, the milestone documents and the Apps' source. The guide templates
become generic (the parent section gives the eyebrow, title and pager).

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EhqxQ49eCju4CzKYNjZzwT
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twisla
2026-10-06 21:00:34 +02:00
co-authored by Claude Sonnet 5.5
parent 2729f2e218
commit ba10ff4a5d
14 changed files with 296 additions and 4 deletions
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site/content/howto/lora-capture.md
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title = "Capture LoRa packets and open them in Wireshark"
description = "Record what the radio hears into a pcap file, then read it on a computer."
weight = 6
[extra]
tag = "LoRa Scanner"
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The radio only **listens**: nothing is transmitted. You need the **Cap LoRa-1262** and an **SD card**.
1. **Open the LoRa Scanner.** The Status Bar shows `L` while the radio listens.
2. **Pick a preset with <kbd>p</kbd>.** The Scanner offers the 7 Meshtastic presets allowed in EU868; LongFast is the default.
3. **Wait for packets.** Each line is a packet: the time, RSSI and SNR, and for a Meshtastic packet the sender, the receiver and the hops. <kbd>Enter</kbd> shows a packet's header and its bytes.
4. **Press <kbd>c</kbd> to start a capture.** The Status Bar shows `CAP`. It keeps recording with the App closed.
5. **Press <kbd>c</kbd> again to stop.**
6. **Get the file.** It is in `/captures/lora/`, a `.pcap` with LoRaTap headers. In the [Storage App](/guide/storage/) you can already look at its packets; on a computer, open it in Wireshark.
**What you will and will not see.** Meshtastic's header is never encrypted, so who sent a packet and how far it hopped is visible. The message itself is encrypted with the channel's key, and the Scanner does not decrypt it.
**Hearing nothing is normal** if no node is in range, or if the preset does not match what the nodes nearby use. The [Sweep](/guide/lora-scanner/) (<kbd>Tab</kbd>) shows whether anything is on the air at all across 863 to 870 MHz.