>_ LoRaMon Web
Browser-based LoRa packet sniffer for RNode hardware — connects over USB (Web Serial) to a device plugged into this computer and streams every captured packet, no install required.
Browser-based LoRa packet sniffer for RNode hardware — connects over WebSocket to a device on your LAN and streams every captured packet, no install required.
{{ isSecureContext ? 'Connect over LAN instead →' : 'Connect over USB instead →' }}
device
{{ connectedDevice }}
{{ connectedPlatformLabel }}
{{ connectedFwVer }}
⚠ Web Serial API not detected in this browser. Use Chrome, Edge, Opera, or another Chromium-based browser to connect over USB — or open http://loramon.rns.moscow instead to connect to a device on your LAN via WebSocket.
{{ statusMsg }}
Starting monitoring changes this device's live frequency, bandwidth, spreading factor, coding rate, and sync word, and enables promiscuous mode. This is not saved to the device's EEPROM config, but will disrupt real traffic on a live node until stopped — the original config is restored automatically when you stop or disconnect.
0x
⚠ 0x34 is the LoRaWAN public sync word — using it may cause interop confusion with nearby LoRaWAN gateways.
⚠ LoRaMon requires RNode_Firmware from flasher.rns.moscow — stock/older firmware won't support all features (e.g. the configurable sync word).
options
{{ capturing ? 'listening for packets...' : 'connect and start monitoring to capture packets' }}
{{ formatTime(entry.timestamp) }}
{{ entry.rns.label }}
{{ entry.mesh.label }}
{{ entry.meshcore.label }}
(empty payload)
{{ formatOffset(row.offset) }}
{{ byteHex(cell.b) }}
{{ asciiChar(cell.b) }}
{{ copiedField === f.key ? 'copied!' : f.label }}
{{ f.value }}
{{ line }}
Part of an RNode split packet (frame too big for one LoRa transmission) - if this is the second half, the fields above describe raw continuation data, not a real RNS header.
{{ hoveredClassifier.reason }}
Not decodable as {{ classifierProtocolName(hoverPopover.kind) }}: {{ hoveredClassifier.reason }}