Packet #3239340

Database ID:	3239340
Mesh Packet ID:	`0x84595688` Used for correlation across gateways
Timestamp:	2026-04-02 08:40:19 UTC
From Node:	EA7HOC 🏠 (7HOC)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	EA7-CO-015🔱〽️🇪🇸 (CO15)
Channel:	LongFast
RSSI:	-99 dBm
SNR:	-11.5 dBm
Hop Info:	2/4 hops Start: 4, Limit: 2

Long Name:	EA7HOC 🏠
Short Name:	7HOC
Node ID:	!120a8c85
MAC Address:	wHsSCoyF
Hardware:	NRF52_PROMICRO_DIY

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:	78 bytes
Gateway:	!b03bcfc4
Channel:	LongFast
Payload Type:	NODEINFO_APP
Hop Count:	2 / 4

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 3 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!b03bcfc4` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (78 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`302681221` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`78` bytes	size
`hop_limit`	`2` Remaining hops allowed	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`2` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-99.0` dBm Signal strength at gateway	int32
`rx_snr`	`-11.50` dB Signal quality at gateway	float
`rx_time`	`1775115617` 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`	`16` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1775115619.3899755` Unix timestamp	uint32

MQTT Privacy & Exposure Analysis

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

Exposure Level: Broadcast

Privacy Features:

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

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ 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:	`!b03bcfc4`
Signal Metrics:	RSSI: -99.0 dBm SNR: -11.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	78 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!120a8c85", "long_name": "EA7HOC 🏠", "short_name": "7HOC", "macaddr": "wHsSCoyF", "hw_model": "NRF52_PROMICRO_DIY" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!b03bcfc4", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 302681221, "to": 4294967295, "id": 2220447368, "rx_time": 1775115617, "rx_snr": -11.5, "rx_rssi": -99, "hop_limit": 2, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 16, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213132306138633835120b454137484f4320f09f8fa01a0437484f432206c07b120a8c85283f380c42208d9e66e42fa4d961e8d05d9975f373e60a21c8bc86a94998f3e49dca423ae7204800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!120a8c85", "long_name": "EA7HOC 🏠", "short_name": "7HOC", "macaddr": "wHsSCoyF", "hw_model": "NRF52_PROMICRO_DIY", "role": "CLIENT_BASE", "public_key": "jZ5m5C+k2WHo0F2ZdfNz5gohyLyGqUmY8+SdykI65yA=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (78 bytes)

0a09213132306138633835120b454137484f4320f09f8fa01a0437484f432206c07b120a8c85283f380c42208d9e66e42fa4d961e8d05d9975f373e60a21c8bc86a94998f3e49dca423ae7204800

Hex Analysis:

Size:	78 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.

Packet #3239340 Success

Packet Information

Payload Data

Decoded Data: