Packet #17991587 Success

NODEINFO_APP packet from Big IRN2 (IRN2) to !da546654

Total Receptions

Unique Gateways

Hop Count

Payload Bytes

Packet Information

Database ID:	17991587
Mesh Packet ID:	`0xbb992a94` Used for correlation across gateways
Timestamp:	2026-03-27 20:00:21 UTC
From Node:	Big IRN2 (IRN2)
To Node:	!da546654 (6654)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Mechanicus Cadia (M3)
Channel:	LongFast
RSSI:	-127 dBm
SNR:	-18.25 dBm
Hop Info:	2/7 hops Start: 7, Limit: 5
Relay Node:	`75` Last byte of the last hop that relayed this packet

Payload Data

Protocol: NODEINFO_APP

Size: 73 bytes

Decoded: Yes

Decoded Data:

Long Name:	Big IRN2
Short Name:	IRN2
Node ID:	!0407cef8
MAC Address:	rKcEB874
Hardware:	HELTEC_V3

Raw Packet Analysis

Complete field breakdown and MQTT privacy/exposure analysis

Packet Structure

MQTT Packet Flow:
ServiceEnvelope (MQTT layer) → MeshPacket (Mesh layer) → Decoded Payload (Application data)

Total Size:	73 bytes
Gateway:	!4359649c
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	2 / 7

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 1 more...

Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 2 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!4359649c` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (73 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`67620600` Source node ID	uint32
`to`	`3662964308` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`73` bytes	size
`hop_limit`	`5` Remaining hops allowed	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`2` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-127.0` dBm Signal strength at gateway	int32
`rx_snr`	`-18.25` dB Signal quality at gateway	float
`rx_time`	`1774641619` Receive timestamp	fixed32
`via_mqtt`	False Direct LoRa transmission	bool
`want_ack`	False No ACK requested	bool
`priority`	Not set	enum
`delayed`	Not set	enum
`channel`	Not set	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`117` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1774641621.253524` Unix timestamp	uint32

MQTT Privacy & Exposure Analysis

Analysis of privacy features and exposure risks when packet is shared via MQTT

Exposure Level: Direct Message

Privacy Features:

✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
✓ Gateway node ID tracked

Exposure Risks:

⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (2 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!4359649c`
Signal Metrics:	RSSI: -127.0 dBm SNR: -18.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	73 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!0407cef8", "long_name": "Big IRN2", "short_name": "IRN2", "macaddr": "rKcEB874", "hw_model": "HELTEC_V3" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!4359649c", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 67620600, "to": 3662964308, "id": 3147377300, "rx_time": 1774641619, "rx_snr": -18.25, "rx_rssi": -127, "hop_limit": 5, "hop_start": 7, "via_mqtt": false, "want_ack": false, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": false, "next_hop": 0, "relay_node": 117, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921303430376365663812084269672049524e321a0449524e322206aca70407cef8282b422019a8354c7ad301985ca0e4e05f95098064a99ba6e84c11d444af8eca6ee8b7104800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!0407cef8", "long_name": "Big IRN2", "short_name": "IRN2", "macaddr": "rKcEB874", "hw_model": "HELTEC_V3", "public_key": "Gag1THrTAZhcoOTgX5UJgGSpm6boTBHURK+Oym7otxA=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (73 bytes)

0a0921303430376365663812084269672049524e321a0449524e322206aca70407cef8282b422019a8354c7ad301985ca0e4e05f95098064a99ba6e84c11d444af8eca6ee8b7104800

Hex Analysis:

Size:	73 bytes
Format:	Protobuf (Protocol Buffers)
Encoding:	Binary with varint and length-delimited fields

This is the raw protobuf-encoded payload as received from MQTT. The structure follows the Meshtastic protobuf schema definitions.

All Receptions

All gateways that received this packet
Correlation: Using Mesh Packet ID

Reception Locations

Loading reception map...

Map shows gateway locations that received this packet. Hop counts are displayed if available.

Gateway	Time Offset	RSSI	SNR	Hops	Relay	Channel	Timestamp	Actions
Mechanicus Cadia (M3) Primary	0.000s Reference	-127.0 dBm	-18.25 dB	2	`75`	LongFast	2026-03-27 20:00:21 UTC	Current
Mechanicus Cadia (M3)	-0.113s Before	-127.0 dBm	-18.25 dB	2	`75`	LongFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	-0.077s Before	-127.0 dBm	-18.25 dB	2	`75`	LongFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	-0.053s Before	-127.0 dBm	-18.25 dB	2	`75`	LongFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	-0.021s Before	-127.0 dBm	-18.25 dB	2	`75`	LongFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.024s After	-127.0 dBm	-18.25 dB	2	`75`	LongFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.048s After	-127.0 dBm	-18.25 dB	2	`75`	LongFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.071s After	-127.0 dBm	-18.25 dB	2	`75`	LongFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.093s After	-127.0 dBm	-18.25 dB	2	`75`	LongFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.114s After	-127.0 dBm	-18.25 dB	2	`75`	LongFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.135s After	-127.0 dBm	-18.25 dB	2	`75`	LongFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.155s After	-127.0 dBm	-18.25 dB	2	`75`	MediumFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.177s After	-127.0 dBm	-18.25 dB	2	`75`	MediumFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.201s After	-127.0 dBm	-18.25 dB	2	`75`	MediumFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.224s After	-127.0 dBm	-18.25 dB	2	`75`	MediumFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.245s After	-127.0 dBm	-18.25 dB	2	`75`	MediumFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.268s After	-127.0 dBm	-18.25 dB	2	`75`	MediumFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.289s After	-127.0 dBm	-18.25 dB	2	`75`	MediumFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.315s After	-127.0 dBm	-18.25 dB	2	`75`	MediumFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.342s After	-127.0 dBm	-18.25 dB	2	`75`	MediumFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.365s After	-127.0 dBm	-18.25 dB	2	`75`	MediumFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.389s After	-127.0 dBm	-18.25 dB	2	`75`	MediumFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.412s After	-127.0 dBm	-18.25 dB	2	`75`	ShortFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.436s After	-127.0 dBm	-18.25 dB	2	`75`	ShortFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.459s After	-127.0 dBm	-18.25 dB	2	`75`	ShortFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.480s After	-127.0 dBm	-18.25 dB	2	`75`	ShortFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.502s After	-127.0 dBm	-18.25 dB	2	`75`	ShortFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.523s After	-127.0 dBm	-18.25 dB	2	`75`	ShortFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.544s After	-127.0 dBm	-18.25 dB	2	`75`	ShortFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.568s After	-127.0 dBm	-18.25 dB	2	`75`	ShortFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.591s After	-127.0 dBm	-18.25 dB	2	`75`	ShortFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.615s After	-127.0 dBm	-18.25 dB	2	`75`	ShortFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.638s After	-127.0 dBm	-18.25 dB	2	`75`	ShortFast	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.659s After	-127.0 dBm	-18.25 dB	2	`75`	ShortTurbo	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.680s After	-127.0 dBm	-18.25 dB	2	`75`	ShortTurbo	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.701s After	-127.0 dBm	-18.25 dB	2	`75`	ShortTurbo	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.722s After	-127.0 dBm	-18.25 dB	2	`75`	ShortTurbo	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.745s After	-127.0 dBm	-18.25 dB	2	`75`	ShortTurbo	2026-03-27 20:00:21 UTC	View
Mechanicus Cadia (M3)	+0.768s After	-127.0 dBm	-18.25 dB	2	`75`	ShortTurbo	2026-03-27 20:00:22 UTC	View
Mechanicus Cadia (M3)	+0.790s After	-127.0 dBm	-18.25 dB	2	`75`	ShortTurbo	2026-03-27 20:00:22 UTC	View
Mechanicus Cadia (M3)	+0.813s After	-127.0 dBm	-18.25 dB	2	`75`	ShortTurbo	2026-03-27 20:00:22 UTC	View
Mechanicus Cadia (M3)	+0.834s After	-127.0 dBm	-18.25 dB	2	`75`	ShortTurbo	2026-03-27 20:00:22 UTC	View
Mechanicus Cadia (M3)	+0.855s After	-127.0 dBm	-18.25 dB	2	`75`	ShortTurbo	2026-03-27 20:00:22 UTC	View
Mechanicus Cadia (M3)	+0.876s After	-127.0 dBm	-18.25 dB	2	`75`	ShortTurbo	2026-03-27 20:00:22 UTC	View
Mechanicus Cadia (M3)	+0.901s After	-127.0 dBm	-18.25 dB	2	`75`	LongFast	2026-03-27 20:00:22 UTC	View
Mechanicus Alpha (M1)	+0.925s After	-112.0 dBm	-5.75 dB	2	`75`	LongFast	2026-03-27 20:00:22 UTC	View

46

Total Receptions

2

Unique Gateways