Packet #651711

Database ID:	651711
Mesh Packet ID:	`0xd5c81edd` Used for correlation across gateways
Timestamp:	2026-03-26 05:39:58 UTC
From Node:	KoDi2 (1991)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	KoDi2 (1991)
Channel:	LongFast
RSSI:	Unknown
SNR:	Unknown
Hop Info:	5/5 hops Start: 5, Limit: 0
Relay Node:	`91` 1991 Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Latitude:	56.118477°
Longitude:	47.284224°
Altitude:	354 m
Satellites:	12
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:	36 bytes
Gateway:	!0ca21991
Channel:	LongFast
Payload Type:	POSITION_APP
Hop Count:	5 / 5

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked
+ 1 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 2 more...

MQTT ServiceEnvelope Fields

Field	Value
`gateway_id`	`!0ca21991` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (36 bytes) Contains the actual mesh network packet

MeshPacket Fields

Canonical MeshPacket view reconstructed from stored protobuf bytes.

Field	Value	Type
`from`	`211949969` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`POSITION_APP` POSITION_APP	enum
`decoded.payload_length`	`36` bytes	size
`hop_limit`	Not set	uint32
`hop_start`	`5` Initial hop limit	uint32
`hops_taken`	`5` Calculated: hop_start - hop_limit	derived
`rx_rssi`	Not set	int32
`rx_snr`	Not set	float
`rx_time`	`1774503586` Receive timestamp	fixed32
`via_mqtt`	False Direct LoRa transmission	bool
`want_ack`	False No ACK requested	bool
`priority`	`BACKGROUND` Packet priority level	enum
`delayed`	Not set	enum
`channel`	`8` Channel index	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`145` 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)
✓ Gateway node ID tracked
✓ Reduced position precision: ~729.0m accuracy

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (5 hops)

MQTT-Specific Fields

Gateway ID:	`!0ca21991`
Position Precision:	15 bits (~729.0m accuracy)
Position precision meters:	`729.0`

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	POSITION_APP
Size:	36 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "latitude": 56.1184768, "longitude": 47.284224, "altitude": 354, "sats_in_view": 12, "precision_bits": 15 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "packet": { "from": 211949969, "to": 4294967295, "channel": 8, "decoded": { "portnum": "POSITION_APP", "payload": "DQAAcyEVAAAvHBjiAiWixsRpKAJYcHgngAGIv84NmAEMuAEP", "bitfield": 1 }, "id": 3586662109, "rx_time": 1774503586, "priority": "BACKGROUND", "hop_start": 5, "relay_node": 145 }, "channel_id": "LongFast", "gateway_id": "!0ca21991" }, "mesh_packet": { "from": 211949969, "to": 4294967295, "channel": 8, "decoded": { "portnum": "POSITION_APP", "payload": "DQAAcyEVAAAvHBjiAiWixsRpKAJYcHgngAGIv84NmAEMuAEP", "bitfield": 1, "parsed_payload": { "latitude_i": 561184768, "longitude_i": 472842240, "altitude": 354, "time": 1774503586, "location_source": "LOC_INTERNAL", "PDOP": 112, "ground_speed": 39, "ground_track": 28549000, "sats_in_view": 12, "precision_bits": 15, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } }, "id": 3586662109, "rx_time": 1774503586, "priority": "BACKGROUND", "hop_start": 5, "relay_node": 145 } }

Raw Packet Data (36 bytes)

0d000073211500002f1c18e20225a2c6c469280258707827800188bfce0d98010cb8010f

Hex Analysis:

Size:	36 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 #651711 Success

Packet Information

Payload Data

Decoded Data: