Packet #763779

Database ID:	763779
Mesh Packet ID:	`0x5e06c89a` Used for correlation across gateways
Timestamp:	2026-01-29 07:47:10 UTC
From Node:	Meshtastic c666 (c666)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	TELEMETRY_APP Port: 67

Gateway:	ADV Nucleus (AVS0)
Channel:	LongFast
RSSI:	-114 dBm
SNR:	-7.0 dBm
Hop Info:	4/7 hops Start: 7, Limit: 3

Temperature:	17.2°C
Pressure:	989.5 hPa

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:	17 bytes
Gateway:	!849a21e8
Channel:	LongFast
Payload Type:	TELEMETRY_APP
Hop Count:	4 / 7

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`	`!849a21e8` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (17 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`1770309672` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`67` TELEMETRY_APP	enum
`decoded.payload_length`	`17` bytes	size
`hop_limit`	`3` Remaining hops allowed	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`4` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-114.0` dBm Signal strength at gateway	int32
`rx_snr`	`-7.00` dB Signal quality at gateway	float
`rx_time`	`1769658430` 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`	`148` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1769658430.875794` 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 (4 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!849a21e8`
Signal Metrics:	RSSI: -114.0 dBm SNR: -7.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	TELEMETRY_APP
Size:	17 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "time": 1769658415, "environment_metrics": { "temperature": 17.23, "barometric_pressure": 989.4869 } }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!849a21e8", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1770309672, "to": 4294967295, "id": 1577502874, "rx_time": 1769658430, "rx_snr": -7.0, "rx_rssi": -114, "hop_limit": 3, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 148, "tx_after": 0, "decoded": { "portnum": 67, "payload": "0d2fd87a691a0a0d0ad789411d295f7744", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "time": 1769658415, "environment_metrics": { "temperature": 17.23, "barometric_pressure": 989.4869 }, "type": "protobuf", "portnum": "TELEMETRY_APP", "message_class": "Telemetry" } } } }

Raw Packet Data (17 bytes)

0d2fd87a691a0a0d0ad789411d295f7744

Hex Analysis:

Size:	17 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.

Gateway	Time Offset	RSSI	SNR	Hops	Channel	Timestamp	Actions
ADV Nucleus (AVS0) Primary	0.000s Reference	-114.0 dBm	-7.00 dB	4	LongFast	2026-01-29 07:47:10	Current
Starfer3 (STR3)	-0.356s Before	-110.0 dBm	-17.00 dB	4	LongFast	2026-01-29 07:47:10	View
Vergeon2 (ra02)	-0.044s Before	-117.0 dBm	-14.50 dB	4	LongFast	2026-01-29 07:47:10	View
Vergeon4 (ra04)	-0.022s Before	-116.0 dBm	-5.25 dB	4	LongFast	2026-01-29 07:47:10	View
Vergeon3 (ra03)	-0.003s Before	-123.0 dBm	-17.75 dB	4	LongFast	2026-01-29 07:47:10	View

Packet #763779 Success

Packet Information

Payload Data

Decoded Data:

Environment Metrics: