Packet #17815744 Success

POSITION_APP packet from Meshtastic b018 (b018) to !ffffffff

Total Receptions

Unique Gateways

Hop Count

Payload Bytes

Packet Information

Database ID:	17815744
Mesh Packet ID:	`0xfd0397f9` Used for correlation across gateways
Timestamp:	2026-03-27 10:27:55 UTC
From Node:	Meshtastic b018 (b018)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	Meshtastic b018 (b018)
Channel:	LongFast
RSSI:	Unknown
SNR:	Unknown
Hop Info:	0/7 hops Start: 7, Limit: 7
Relay Node:	`18` b018 Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions

Payload Data

Protocol: POSITION_APP

Size: 27 bytes

Decoded: Yes

Decoded Data:

Latitude:	46.406042°
Longitude:	-72.515584°
Altitude:	42 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:	27 bytes
Gateway:	!db51b018
Channel:	LongFast
Payload Type:	POSITION_APP
Hop Count:	Unknown / 7

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked
+ 2 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!db51b018` Node ID format
`channel_id`	`LongFast` Default public channel
`packet`	`MeshPacket` (27 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3679563800` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`3` POSITION_APP	enum
`decoded.payload_length`	`27` bytes	size
`hop_limit`	`7` Remaining hops allowed	uint32
`hop_start`	`7` Initial hop limit	uint32
`hops_taken`	`0` Calculated: hop_start - hop_limit	derived
`rx_rssi`	Not set	int32
`rx_snr`	Not set	float
`rx_time`	`1774607274` Receive timestamp	fixed32
`via_mqtt`	False Direct LoRa transmission	bool
`want_ack`	False No ACK requested	bool
`priority`	`10` Packet priority level	enum
`delayed`	Not set	enum
`channel`	Not set	uint32
`pki_encrypted`	False Standard encryption	bool
`next_hop`	Not set	uint32
`relay_node`	`24` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1774607275.586345` 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
✓ Reduced position precision: ~729.0m accuracy
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers

MQTT-Specific Fields

Gateway ID:	`!db51b018`
Position Precision:	15 bits (~729.0m accuracy)
Position precision meters:	`729.0`
Zero Hop Policy:	Enabled Direct gateway connection

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	POSITION_APP
Size:	27 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "latitude": 46.4060416, "longitude": -72.515584, "altitude": 42, "sats_in_view": null, "precision_bits": 15 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!db51b018", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3679563800, "to": 4294967295, "id": 4244871161, "rx_time": 1774607274, "rx_snr": 0.0, "rx_rssi": 0, "hop_limit": 7, "hop_start": 7, "via_mqtt": false, "want_ack": false, "priority": 10, "delayed": 0, "channel_index": null, "pki_encrypted": false, "next_hop": 0, "relay_node": 24, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d0000a91b150000c7d4182a25aa5bc66928017800800100b8010f", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 464060416, "longitude_i": -725155840, "altitude": 42, "time": 1774607274, "location_source": "LOC_MANUAL", "ground_speed": 0, "ground_track": 0, "precision_bits": 15, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }

Raw Packet Data (27 bytes)

0d0000a91b150000c7d4182a25aa5bc66928017800800100b8010f

Hex Analysis:

Size:	27 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.

All Receptions

All gateways that received this packet
Correlation: Using Mesh Packet ID

Reception Locations

Loading reception map...

Map shows gateway locations that received this packet. Hop counts are displayed if available.

Gateway	Time Offset	RSSI	SNR	Relay	Channel	Timestamp	Actions
Meshtastic b018 (b018) Primary	0.000s Reference	Unknown	Unknown	`18` b018	LongFast	2026-03-27 10:27:55 UTC	Current
Meshtastic b018 (b018)	+0.033s After	Unknown	Unknown	`18` b018	LongFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.045s After	Unknown	Unknown	`18` b018	LongFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.062s After	Unknown	Unknown	`18` b018	LongFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.078s After	Unknown	Unknown	`18` b018	LongFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.094s After	Unknown	Unknown	`18` b018	LongFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.105s After	Unknown	Unknown	`18` b018	LongFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.115s After	Unknown	Unknown	`18` b018	LongFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.126s After	Unknown	Unknown	`18` b018	LongFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.137s After	Unknown	Unknown	`18` b018	LongFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.147s After	Unknown	Unknown	`18` b018	LongFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.159s After	Unknown	Unknown	`18` b018	MediumFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.172s After	Unknown	Unknown	`18` b018	MediumFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.184s After	Unknown	Unknown	`18` b018	MediumFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.196s After	Unknown	Unknown	`18` b018	MediumFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.208s After	Unknown	Unknown	`18` b018	MediumFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.219s After	Unknown	Unknown	`18` b018	MediumFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.231s After	Unknown	Unknown	`18` b018	MediumFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.243s After	Unknown	Unknown	`18` b018	MediumFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.254s After	Unknown	Unknown	`18` b018	MediumFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.265s After	Unknown	Unknown	`18` b018	MediumFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.276s After	Unknown	Unknown	`18` b018	MediumFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.286s After	Unknown	Unknown	`18` b018	ShortFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.297s After	Unknown	Unknown	`18` b018	ShortFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.308s After	Unknown	Unknown	`18` b018	ShortFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.319s After	Unknown	Unknown	`18` b018	ShortFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.329s After	Unknown	Unknown	`18` b018	ShortFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.342s After	Unknown	Unknown	`18` b018	ShortFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.354s After	Unknown	Unknown	`18` b018	ShortFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.366s After	Unknown	Unknown	`18` b018	ShortFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.378s After	Unknown	Unknown	`18` b018	ShortFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.390s After	Unknown	Unknown	`18` b018	ShortFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.402s After	Unknown	Unknown	`18` b018	ShortFast	2026-03-27 10:27:55 UTC	View
Meshtastic b018 (b018)	+0.414s After	Unknown	Unknown	`18` b018	ShortTurbo	2026-03-27 10:27:56 UTC	View
Meshtastic b018 (b018)	+0.426s After	Unknown	Unknown	`18` b018	ShortTurbo	2026-03-27 10:27:56 UTC	View
Meshtastic b018 (b018)	+0.437s After	Unknown	Unknown	`18` b018	ShortTurbo	2026-03-27 10:27:56 UTC	View
Meshtastic b018 (b018)	+0.447s After	Unknown	Unknown	`18` b018	ShortTurbo	2026-03-27 10:27:56 UTC	View
Meshtastic b018 (b018)	+0.458s After	Unknown	Unknown	`18` b018	ShortTurbo	2026-03-27 10:27:56 UTC	View
Meshtastic b018 (b018)	+0.469s After	Unknown	Unknown	`18` b018	ShortTurbo	2026-03-27 10:27:56 UTC	View
Meshtastic b018 (b018)	+0.480s After	Unknown	Unknown	`18` b018	ShortTurbo	2026-03-27 10:27:56 UTC	View
Meshtastic b018 (b018)	+0.491s After	Unknown	Unknown	`18` b018	ShortTurbo	2026-03-27 10:27:56 UTC	View
Meshtastic b018 (b018)	+0.502s After	Unknown	Unknown	`18` b018	ShortTurbo	2026-03-27 10:27:56 UTC	View
Meshtastic b018 (b018)	+0.512s After	Unknown	Unknown	`18` b018	ShortTurbo	2026-03-27 10:27:56 UTC	View
Meshtastic b018 (b018)	+0.524s After	Unknown	Unknown	`18` b018	ShortTurbo	2026-03-27 10:27:56 UTC	View
Meshtastic b018 (b018)	+0.537s After	Unknown	Unknown	`18` b018	LongFast	2026-03-27 10:27:56 UTC	View

45

Total Receptions

1

Unique Gateways