Packet #1124519

Database ID:	1124519
Mesh Packet ID:	`0x0f9c32ee` Used for correlation across gateways
Timestamp:	2026-06-17 14:29:19 UTC
From Node:	AB - La Coronilla 1 🗼🌞 (MIKD)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	EA7-MA-017 (MA17)
Channel:	SFNarrow
RSSI:	-71 dBm
SNR:	12.0 dBm
Hop Info:	7/7 hops Start: 7, Limit: 0
Relay Node:	`89` MA22 Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Latitude:	38.630628°
Longitude:	-2.359323°
Altitude:	1546 m
Satellites:	14
Precision:	32 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:	33 bytes
Gateway:	!84087374
Channel:	SFNarrow
Payload Type:	POSITION_APP
Hop Count:	7 / 7

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: SFNarrow
+ 1 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 3 more...

MQTT ServiceEnvelope Fields

Field	Value
`gateway_id`	`!84087374` Node ID format
`channel_id`	`SFNarrow`
`packet`	`MeshPacket` (33 bytes) Contains the actual mesh network packet

MeshPacket Fields

Canonical MeshPacket view reconstructed from stored protobuf bytes.

Field	Value	Type
`from`	`60753077` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`POSITION_APP` POSITION_APP	enum
`decoded.payload_length`	`33` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`7` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-71.0` dBm Signal strength at gateway	int32
`rx_snr`	`12.00` dB Signal quality at gateway	float
`rx_time`	`1781706557` 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`	`137` 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

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
⚠ Full GPS precision shared
⚠ Multi-hop path visible (7 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!84087374`
Position Precision:	32 bits (~1.0m accuracy)
Position precision meters:	`1.0`
Signal Metrics:	RSSI: -71.0 dBm SNR: 12.00 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	POSITION_APP
Size:	33 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "latitude": 38.6306283, "longitude": -2.3593233, "altitude": 1546, "sats_in_view": 14, "precision_bits": 32 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "packet": { "from": 60753077, "to": 4294967295, "channel": 32, "decoded": { "portnum": "POSITION_APP", "payload": "DeuQBhcV7/6X/hiKDCUurzJqKAJYYngAgAEAmAEOuAEg", "bitfield": 1 }, "id": 261894894, "rx_time": 1781706557, "rx_snr": 12.0, "rx_rssi": -71, "hop_start": 7, "relay_node": 137, "transport_mechanism": "TRANSPORT_LORA" }, "channel_id": "SFNarrow", "gateway_id": "!84087374" }, "mesh_packet": { "from": 60753077, "to": 4294967295, "channel": 32, "decoded": { "portnum": "POSITION_APP", "payload": "DeuQBhcV7/6X/hiKDCUurzJqKAJYYngAgAEAmAEOuAEg", "bitfield": 1, "parsed_payload": { "latitude_i": 386306283, "longitude_i": -23593233, "altitude": 1546, "time": 1781706542, "location_source": "LOC_INTERNAL", "PDOP": 98, "ground_speed": 0, "ground_track": 0, "sats_in_view": 14, "precision_bits": 32, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } }, "id": 261894894, "rx_time": 1781706557, "rx_snr": 12.0, "rx_rssi": -71, "hop_start": 7, "relay_node": 137, "transport_mechanism": "TRANSPORT_LORA" } }

Raw Packet Data (33 bytes)

0deb90061715effe97fe188a0c252eaf326a28025862780080010098010eb80120

Hex Analysis:

Size:	33 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 #1124519 Success

Packet Information

Payload Data

Decoded Data: