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docs/srp/user/settings-radio-user.md bd2863243bab6eb213401d949839a2bc74dde7e2 (bd286324) Text, 15.52 KB
title: Settings β Radio & User
parent: User Guide
nav_order: 7
last_updated: 2026-07-27
description: Configure your radio hardware, LoRa presets, user profile, position sharing, power management, and security.
aliases:
β’ ΠΏΠΎΠ΄Π΅ΡΠ°Π²Π°ΡΠ°
β’ radio-config
β’ user-config
β’ lora
Settings β Radio & User
Configure your radio hardware and user identity parameters.
User Settings
User Profile
ββββββββββββββββββββββββ¬βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
β Setting β ΠΠΏΠΈΡ β
ββββββββββββββββββββββββΌβββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ€
β ΠΡΠ³ΠΎ ΠΈΠΌΠ΅ β Your display name (up to 39 characters) β
β ΠΡΠ°ΡΠΊΠΎ ΠΈΠΌΠ΅ β 4-character abbreviated name β
β ΠΠΈΡΠ΅Π½ΡΠΈΡΠ°Π½ΠΈ ΠΎΠΏΠ΅ΡΠ°ΡΠΎΡ β Enable if you hold an amateur radio license (enables higher power) β
ββββββββββββββββββββββββ΄βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
Applying Changes
After modifying settings, tap Save to write the configuration to your radio. The device may reboot to apply changes.
Configuration
ΠΠΎΠ΄Π΅ΡΠ°Π²Π°ΡΠ° ΡΡΠ΅ΡΠ°ΡΠ°
βββββββββββββββββββββββββββ¬βββββββββββββββββββββββββββββββββββββββ¬ββββββββββββββββ
β Setting β ΠΠΏΠΈΡ β ΠΠΎΠ΄ΡΠ°Π·ΡΠΌΠ΅Π²Π°Π½ΠΎ β
βββββββββββββββββββββββββββΌβββββββββββββββββββββββββββββββββββββββΌββββββββββββββββ€
β Π£Π»ΠΎΠ³Π° β Node behavior (Client, Router, etc.) β ΠΠ»ΠΈΡΠ΅Π½Ρ β
β Π Π΅ΠΆΠΈΠΌ ΡΠ΅Π΅ΠΌΠΈΡΠΎΠ²Π°ΡΠ° β How the node retransmits messages β Π‘Π²ΠΈ β
β Node Info Broadcast (s) β Interval for broadcasting node info β 10800 β
β Double-tap Button β Action for double-tap button press β ΠΠ½Π΅ΠΌΠΎΠ³ΡΡΠ΅Π½ΠΎ β
βββββββββββββββββββββββββββ΄βββββββββββββββββββββββββββββββββββββββ΄ββββββββββββββββ
LoRA ΠΏΠΎΠ΄Π΅ΡΠ°Π²Π°ΡΠ°
βββββββββββββββββββββ¬ββββββββββββββββββββββββββββββββββββββββββββββββββββββ¬βββββββββββββββββββββββββ
β Setting β ΠΠΏΠΈΡ β ΠΠΎΠ΄ΡΠ°Π·ΡΠΌΠ΅Π²Π°Π½ΠΎ β
βββββββββββββββββββββΌββββββββββββββββββββββββββββββββββββββββββββββββββββββΌβββββββββββββββββββββββββ€
β Π Π΅Π³ΠΈΠΎΠ½ β Regulatory region for frequency bands β Unset (must configure) β
β Modem Preset β Speed/range tradeoff β LongFast β
β Hop Limit β Maximum retransmit hops β 3 β
β TX Power β Transmission power (dBm); 0 = max allowed for regiβ¦ β 0 (region max) β
β Frequency Offset β Fine-tune frequency (MHz) β 0 β
β Channel Bandwidth β Bandwidth setting β Default for preset β
βββββββββββββββββββββ΄ββββββββββββββββββββββββββββββββββββββββββββββββββββββ΄βββββββββββββββββββββββββ
β β οΈ Important: You must set your region before transmitting. Operating without the correct region
β may violate local radio regulations. See the region configuration
β guide on meshtastic.org for details.
Modem Presets
β π‘ Tip: The SNR Limit values are negative on purpose. LoRa can decode signals below the noise
β floor, so a more-negative limit means the preset tolerates a weaker, noisier signal (more range).
β See How the Signal Meter
β Works
β for the full explanation.
ββββββββββββββββββββββ¬ββββββββββ¬ββββββββββββ¬ββββββββββββ¬ββββββββββββββββββββββββββββββββββββββββββββ
β Preset β Range β ΠΡΠ·ΠΈΠ½Π° β SNR Limit β Best For β
ββββββββββββββββββββββΌββββββββββΌββββββββββββΌββββββββββββΌββββββββββββββββββββββββββββββββββββββββββββ€
β Short Turbo β ~1 km β 21.9 kbps β β7.5 dB β Dense urban with line-of-sight; data-heaβ¦ β
β Short Fast β ~3 km β 10.9 kbps β β7.5 dB β Urban neighborhoods; buildings within a β¦ β
β Short Slow β ~5 km β 5.5 kbps β β10 dB β Suburban short-range; moderate building β¦ β
β Medium Fast β ~5 km β 5.5 kbps β β12.5 dB β Suburban areas; moderate building density β
β Medium Slow β ~8 km β 1.1 kbps β β15 dB β Suburban/rural; moderate range with slowβ¦ β
β Long Turbo β ~10 km β 4.4 kbps β β12.5 dB β Similar range to Long Fast but with 500 β¦ β
β Long Fast β ~10 km β 1.1 kbps β β17.5 dB β General use (default) β balanced range aβ¦ β
β Long Moderate β ~20 km β 0.34 kbps β β17.5 dB β Rural with some terrain; occasional use β
β Lite Fast β ~5 km β 5.5 kbps β β12.5 dB β EU 866 MHz SRD band (125 kHz BW); comparβ¦ β
β Lite Slow β ~10 km β 1.1 kbps β β15 dB β EU 866 MHz SRD band (125 kHz BW); comparβ¦ β
β Narrow Fast β ~5 km β 2.7 kbps β β10 dB β EU 868 MHz band (62.5 kHz BW); avoids inβ¦ β
β Narrow Slow β ~10 km β 1.1 kbps β β12.5 dB β EU 868 MHz band (62.5 kHz BW); comparablβ¦ β
β ~~Long Slow~~ β ~30 km β 0.18 kbps β β20 dB β β οΈ Deprecated β still selectable but mayβ¦ β
β ~~Very Long Slow~~ β ~40+ km β 0.09 kbps β β20 dB β β οΈ Deprecated β still selectable but mayβ¦ β
ββββββββββββββββββββββ΄ββββββββββ΄ββββββββββββ΄ββββββββββββ΄ββββββββββββββββββββββββββββββββββββββββββββ
β βΉοΈ Note: This table uses the common short names. In the app's preset dropdown they read as Short
β Range - Fast, Long Range - Fast, Lite - Fast, Narrow - Fast, and so on.
Choosing a Modem Preset
The modem preset controls the fundamental tradeoff between range and data rate:
β’ Slower presets use more spreading, making signals decodable at weaker signal levels (lower SNR limit). This means longer range but fewer bytes per second.
β’ Faster presets pack more data per transmission but require a stronger signal to decode.
Practical guidance:
β’ Urban mesh (many nodes, short distances): Use Long Fast (default) or Short Fast. Higher speed means less airtime congestion when many nodes share the channel.
β’ Rural/sparse mesh (few nodes, long distances): Use Long Moderate. Range matters more than speed when nodes are far apart.
β’ EU 866/868 MHz regulatory compliance: Use Lite Fast, Lite Slow, Narrow Fast, or Narrow Slow β these are optimized for the EU SRD/868 MHz bands with narrower bandwidths.
β’ Fixed infrastructure links: Use Short Turbo or Long Turbo for dedicated point-to-point links with good antennas and line-of-sight.
β’ Mixed environments: Stick with Long Fast β it's the community default and ensures compatibility with others in your area.
β β οΈ Important: All nodes on the same channel must use the same modem preset. Nodes with mismatched
β presets cannot communicate even if they share the same frequency and encryption key.
β π‘ Tip: The range estimates above assume flat terrain and modest antennas. Elevation advantage
β (hilltop, rooftop) dramatically increases effective range. A well-placed Router with Long Fast
β can often outperform a ground-level node with Long Slow.
ΠΠΎΠ΄Π΅ΡΠ°Π²Π°ΡΠ° ΠΏΡΠΈΠΊΠ°Π·Π°
βββββββββββββββββββββββ¬βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
β Setting β ΠΠΏΠΈΡ β
βββββββββββββββββββββββΌβββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ€
β Screen Timeout β Time before display sleeps β
β ΠΠ΅Π΄ΠΈΠ½ΠΈΡΠ΅ ΠΏΡΠΈΠΊΠ°Π·Π° β Metric or Imperial β
β Π’ΠΈΠΏ OLED-Π° β Auto, SSD1306, SH1106, SH1107 β
β Compass Orientation β Rotation offset for compass display (0Β°, 90Β°, 180Β°, 270Β°) β
β ~~Compass North~~ β β οΈ Deprecated β replaced by Compass Orientation; still visible in older fβ¦ β
βββββββββββββββββββββββ΄βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
ΠΠΎΠ΄Π΅ΡΠ°Π²Π°ΡΠ° ΠΏΠΎΠ·ΠΈΡΠΈΡΠ΅
ββββββββββββββββββββββββββ¬βββββββββββββββββββββββββββββββββββββ
β Setting β ΠΠΏΠΈΡ β
ββββββββββββββββββββββββββΌβββββββββββββββββββββββββββββββββββββ€
β GPS Enabled β Enable/disable GPS β
β GPS Update Interval β How often to acquire GPS fix β
β Position Broadcast (s) β How often to share position β
β ΠΠ°ΠΌΠ΅ΡΠ½ΠΎ ΠΏΠΎΠ·ΠΈΡΠΈΠΎΠ½ΠΈΡΠ°ΡΠ΅ β Enable movement-based broadcasting β
β Π€ΠΈΠΊΡΠ½Π° Π»ΠΎΠΊΠ°ΡΠΈΡΠ° β Use a manually set position β
ββββββββββββββββββββββββββ΄βββββββββββββββββββββββββββββββββββββ
ΠΠΎΠ΄Π΅ΡΠ°Π²Π°ΡΠ° Π½Π°ΠΏΠ°ΡΡΠ°
ββββββββββββββββββββββββ¬ββββββββββββββββββββββββββββββββββββββββββ
β Setting β ΠΠΏΠΈΡ β
ββββββββββββββββββββββββΌββββββββββββββββββββββββββββββββββββββββββ€
β Π£ΡΡΠ΅Π΄Π° Π΅Π½Π΅ΡΠ³ΠΈΡΠ΅ β Enable low-power sleep mode β
β Shutdown After (s) β Auto-shutdown idle timer β
β ADC Multiplier β Battery voltage calibration factor β
β Wait Bluetooth (s) β Time to wait for BLE connection at boot β
β Mesh SDS Timeout (s) β Super-deep-sleep timeout β
ββββββββββββββββββββββββ΄ββββββββββββββββββββββββββββββββββββββββββ
ΠΠΎΠ½ΡΠΈΠ³ΡΡΠ°ΡΠΈΡΠ° ΠΌΡΠ΅ΠΆΠ΅
βββββββββββββββββ¬ββββββββββββββββββββββββββββββββββββ
β Setting β ΠΠΏΠΈΡ β
βββββββββββββββββΌββββββββββββββββββββββββββββββββββββ€
β WiFi Enabled β Enable WiFi radio (ESP32 devices) β
β WiFi SSID β Network name to connect to β
β WiFi PSK β Network password β
β NTP Server β Time synchronization server β
β Syslog Server β Remote logging server β
βββββββββββββββββ΄ββββββββββββββββββββββββββββββββββββ
ΠΠ»ΡΡΡΡ ΠΏΠΎΠ΄Π΅ΡΠ°Π²Π°ΡΠ°
βββββββββββββββββββββ¬βββββββββββββββββββββββββββββββββββββββββ
β Setting β ΠΠΏΠΈΡ β
βββββββββββββββββββββΌβββββββββββββββββββββββββββββββββββββββββ€
β Bluetooth Enabled β Enable/disable BLE radio β
β ΠΠΎΠ΄ ΡΠΏΠ°ΡΠΈΠ²Π°ΡΠ° β Fixed PIN, Random PIN, or No PIN β
β Fixed PIN β PIN code for pairing (default: 123456) β
βββββββββββββββββββββ΄βββββββββββββββββββββββββββββββββββββββββ
Π‘ΠΈΠ³ΡΡΠ½ΠΎΡΠ½Π° ΠΏΠΎΠ΄Π΅ΡΠ°Π²Π°ΡΠ°
βββββββββββββββββββββββββββββ¬βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
β Setting β ΠΠΏΠΈΡ β
βββββββββββββββββββββββββββββΌβββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ€
β ΠΠ°Π²Π½ΠΈ ΠΊΡΡΡ β Your node's public key (read-only) β
β Admin Key β Key for remote administration β
β ΠΡΠΈΠ²Π°ΡΠ½ΠΈ ΠΊΡΡΡ β Your node's private key (handle securely) β
β ~~Admin Channel Enabled~~ β β οΈ Removed β now configured automatically when an admin key is set β
β Debug Log β Output live debug logging over serial/bluetooth β
β Serial Enabled β Enable serial console access (moved from Device Config) β
β Managed Mode β Restrict non-admin channel changes β
β Backup Keys β Save an encrypted backup of the node's keys on this device (Androidβ¦ β
β Restore Keys β Write the backed-up keys back to the node (available once a backup β¦ β
β Delete Key Backup β Remove the stored key backup from this device β
β Protection Level β Packet authenticity β how unsigned or relayed packets are treated: β¦ β
βββββββββββββββββββββββββββββ΄βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
Settings use standard preference controls β dropdowns, toggles, and sliders:
ββββββββββββ¬ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
β Control β Screenshot β
ββββββββββββΌββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ€
β Dropdown β !Dropdown β optional feature modules and device administration
β’ Signal Meter β how modem presets affect signal quality thresholds
β’ LoRa configuration β detailed LoRa settings reference on meshtastic.org
β’ Initial configuration β region setup guide on meshtastic.org
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