Packet #1311924

Database ID:	1311924
Mesh Packet ID:	`0x798c8ad7` Used for correlation across gateways
Timestamp:	2026-06-29 06:52:53 UTC
From Node:	CACERES TOTO (TOTO)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	EA7-CA-012🗼🇪🇦SB (CA12)
Channel:	SFNarrow
RSSI:	-115 dBm
SNR:	1.25 dBm
Hop Info:	1/5 hops Start: 5, Limit: 4
Relay Node:	`13` CO14 Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Latitude:	39.433011°
Longitude:	-6.284902°
Altitude:	649 m
Precision:	15 bits

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:	28 bytes
Gateway:	!9e9e1be0
Channel:	SFNarrow
Payload Type:	POSITION_APP
Hop Count:	1 / 5

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: SFNarrow
+ 2 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 2 more...

MQTT ServiceEnvelope Fields

Field	Value
`gateway_id`	`!9e9e1be0` Node ID format
`channel_id`	`SFNarrow`
`packet`	`MeshPacket` (28 bytes) Contains the actual mesh network packet

MeshPacket Fields

Canonical MeshPacket view reconstructed from stored protobuf bytes.

Field	Value	Type
`from`	`3250996418` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`POSITION_APP` POSITION_APP	enum
`decoded.payload_length`	`28` bytes	size
`hop_limit`	`4` Remaining hops allowed	uint32
`hop_start`	`5` Initial hop limit	uint32
`hops_taken`	`1` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-115.0` dBm Signal strength at gateway	int32
`rx_snr`	`1.25` dB Signal quality at gateway	float
`rx_time`	`1782715972` 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`	`32` Channel index	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`19` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	Not set	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)
✓ Custom channel: SFNarrow
✓ Gateway node ID tracked
✓ Reduced position precision: ~729.0m accuracy

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (1 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!9e9e1be0`
Position Precision:	15 bits (~729.0m accuracy)
Position precision meters:	`729.0`
Signal Metrics:	RSSI: -115.0 dBm SNR: 1.25 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	POSITION_APP
Size:	28 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "latitude": 39.4330112, "longitude": -6.2849024, "altitude": 649, "sats_in_view": null, "precision_bits": 15 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "packet": { "from": 3250996418, "to": 4294967295, "channel": 32, "decoded": { "portnum": "POSITION_APP", "payload": "DQAAgRcVAABB/BiJBSUyFkJqKAF4AIABALgBDw==", "bitfield": 1 }, "id": 2039253719, "rx_time": 1782715972, "rx_snr": 1.25, "hop_limit": 4, "rx_rssi": -115, "hop_start": 5, "relay_node": 19, "transport_mechanism": "TRANSPORT_LORA" }, "channel_id": "SFNarrow", "gateway_id": "!9e9e1be0" }, "mesh_packet": { "from": 3250996418, "to": 4294967295, "channel": 32, "decoded": { "portnum": "POSITION_APP", "payload": "DQAAgRcVAABB/BiJBSUyFkJqKAF4AIABALgBDw==", "bitfield": 1, "parsed_payload": { "latitude_i": 394330112, "longitude_i": -62849024, "altitude": 649, "time": 1782715954, "location_source": "LOC_MANUAL", "ground_speed": 0, "ground_track": 0, "precision_bits": 15, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } }, "id": 2039253719, "rx_time": 1782715972, "rx_snr": 1.25, "hop_limit": 4, "rx_rssi": -115, "hop_start": 5, "relay_node": 19, "transport_mechanism": "TRANSPORT_LORA" } }

Raw Packet Data (28 bytes)

0d0000811715000041fc188905253216426a28017800800100b8010f

Hex Analysis:

Size:	28 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 #1311924 Success

Packet Information

Payload Data

Decoded Data: