Packet #15849160

Database ID:	15849160
Mesh Packet ID:	`0xa90cefc9` Used for correlation across gateways
Timestamp:	2026-04-17 00:37:01 UTC
From Node:	Alex Microtech 3adc (3adc)
To Node:	R2BNY (a818)
Success:	Processed
Protocol:	NODEINFO_APP Port: 4

Gateway:	Meshtastic a780 (R2D2)
Channel:	MediumFast
RSSI:	-96 dBm
SNR:	-11.5 dBm
Hop Info:	4/4 hops Start: 4, Limit: 0

Long Name:	Alex Microtech 3adc
Short Name:	3adc
Node ID:	!bba83adc
MAC Address:	LLy7qDrc
Hardware:	TBEAM

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:	84 bytes
Gateway:	!6985a780
Channel:	MediumFast
Payload Type:	NODEINFO_APP
Hop Count:	4 / 4

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 2 more...

Exposure Risks:
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (4 hops)
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!6985a780` Node ID format
`channel_id`	`MediumFast`
`packet`	`MeshPacket` (84 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3148364508` Source node ID	uint32
`to`	`1770301464` Target node ID	uint32
`decoded.portnum`	`4` NODEINFO_APP	enum
`decoded.payload_length`	`84` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`4` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-96.0` dBm Signal strength at gateway	int32
`rx_snr`	`-11.50` dB Signal quality at gateway	float
`rx_time`	`1776375418` 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`	`164` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1776375421.7902012` 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
✓ Custom channel: MediumFast
✓ Gateway node ID tracked

Exposure Risks:

⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (4 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!6985a780`
Signal Metrics:	RSSI: -96.0 dBm SNR: -11.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	NODEINFO_APP
Size:	84 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "id": "!bba83adc", "long_name": "Alex Microtech 3adc", "short_name": "3adc", "macaddr": "LLy7qDrc", "hw_model": "TBEAM" }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!6985a780", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3148364508, "to": 1770301464, "id": 2836197321, "rx_time": 1776375418, "rx_snr": -11.5, "rx_rssi": -96, "hop_limit": 0, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 164, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a092162626138336164631213416c6578204d6963726f7465636820336164631a043361646322062cbcbba83adc280442202e1cd52ed74b6f0f4f4e0991a430ff7d485fe4efbfa81963079eb6931e659f354800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!bba83adc", "long_name": "Alex Microtech 3adc", "short_name": "3adc", "macaddr": "LLy7qDrc", "hw_model": "TBEAM", "public_key": "LhzVLtdLbw9PTgmRpDD/fUhf5O+/qBljB562kx5lnzU=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }

Raw Packet Data (84 bytes)

0a092162626138336164631213416c6578204d6963726f7465636820336164631a043361646322062cbcbba83adc280442202e1cd52ed74b6f0f4f4e0991a430ff7d485fe4efbfa81963079eb6931e659f354800

Hex Analysis:

Size:	84 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 #15849160 Success

Packet Information

Payload Data

Decoded Data: