Packet #39477786 Success

POSITION_APP packet from Happy Eric (:)) to !ffffffff

Total Receptions

Unique Gateways

Hop Count

Payload Bytes

Packet Information

Database ID:	39477786
Mesh Packet ID:	`0x876148ce` Used for correlation across gateways
Timestamp:	2026-05-16 07:00:57 UTC
From Node:	Happy Eric (:))
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	Meshtastic b018 (b018)
Channel:	MediumFast
RSSI:	-123 dBm
SNR:	-12.25 dBm
Hop Info:	4/7 hops Start: 7, Limit: 3
Relay Node:	`a8` Last byte of the last hop that relayed this packet

Payload Data

Protocol: POSITION_APP

Size: 36 bytes

Decoded: Yes

Decoded Data:

Latitude:	46.163558°
Longitude:	-72.482816°
Altitude:	53 m
Satellites:	12
Precision:	13 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:	!db51b018
Channel:	MediumFast
Payload Type:	POSITION_APP
Hop Count:	4 / 7

Privacy Summary

Exposure Level:
Broadcast

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

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

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!db51b018` Node ID format
`channel_id`	`MediumFast`
`packet`	`MeshPacket` (36 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`3682167912` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`3` POSITION_APP	enum
`decoded.payload_length`	`36` 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`	`-123.0` dBm Signal strength at gateway	int32
`rx_snr`	`-12.25` dB Signal quality at gateway	float
`rx_time`	`1778914856` 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`	`168` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1778914857.4803133` 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)
✓ Custom channel: MediumFast
✓ Gateway node ID tracked
✓ Reduced position precision: ~2900.0m accuracy

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (4 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!db51b018`
Position Precision:	13 bits (~2900.0m accuracy)
Position precision meters:	`2900.0`
Signal Metrics:	RSSI: -123.0 dBm SNR: -12.25 dB

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": 46.1635584, "longitude": -72.482816, "altitude": 53, "sats_in_view": 12, "precision_bits": 13 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!db51b018", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3682167912, "to": 4294967295, "id": 2271299790, "rx_time": 1778914856, "rx_snr": -12.25, "rx_rssi": -123, "hop_limit": 3, "hop_start": 7, "via_mqtt": false, "want_ack": false, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": false, "next_hop": 0, "relay_node": 168, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d0000841b150000ccd41835252116086a280258960178008001c0e1ee0f98010cb8010d", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 461635584, "longitude_i": -724828160, "altitude": 53, "time": 1778914849, "location_source": "LOC_INTERNAL", "PDOP": 150, "ground_speed": 0, "ground_track": 33272000, "sats_in_view": 12, "precision_bits": 13, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }

Raw Packet Data (36 bytes)

0d0000841b150000ccd41835252116086a280258960178008001c0e1ee0f98010cb8010d

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.

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	Hops	Relay	Channel	Timestamp	Actions
Meshtastic b018 (b018) Primary	0.000s Reference	-123.0 dBm	-12.25 dB	4	`a8`	MediumFast	2026-05-16 07:00:57 UTC	Current
Meshtastic b018 (b018)	-0.227s Before	-123.0 dBm	-12.25 dB	4	`a8`	LongFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	-0.195s Before	-123.0 dBm	-12.25 dB	4	`a8`	LongFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	-0.184s Before	-123.0 dBm	-12.25 dB	4	`a8`	LongFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	-0.174s Before	-123.0 dBm	-12.25 dB	4	`a8`	LongFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	-0.158s Before	-123.0 dBm	-12.25 dB	4	`a8`	LongFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	-0.141s Before	-123.0 dBm	-12.25 dB	4	`a8`	LongFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	-0.123s Before	-123.0 dBm	-12.25 dB	4	`a8`	LongFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	-0.107s Before	-123.0 dBm	-12.25 dB	4	`a8`	LongFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	-0.082s Before	-123.0 dBm	-12.25 dB	4	`a8`	LongFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	-0.071s Before	-123.0 dBm	-12.25 dB	4	`a8`	LongFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	-0.053s Before	-123.0 dBm	-12.25 dB	4	`a8`	LongFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	-0.036s Before	-123.0 dBm	-12.25 dB	4	`a8`	MediumFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	-0.020s Before	-123.0 dBm	-12.25 dB	4	`a8`	MediumFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	-0.009s Before	-123.0 dBm	-12.25 dB	4	`a8`	MediumFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.009s After	-123.0 dBm	-12.25 dB	4	`a8`	MediumFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.018s After	-123.0 dBm	-12.25 dB	4	`a8`	MediumFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.028s After	-123.0 dBm	-12.25 dB	4	`a8`	MediumFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.044s After	-123.0 dBm	-12.25 dB	4	`a8`	MediumFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.053s After	-123.0 dBm	-12.25 dB	4	`a8`	MediumFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.067s After	-123.0 dBm	-12.25 dB	4	`a8`	MediumFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.088s After	-123.0 dBm	-12.25 dB	4	`a8`	MediumFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.101s After	-123.0 dBm	-12.25 dB	4	`a8`	ShortFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.113s After	-123.0 dBm	-12.25 dB	4	`a8`	ShortFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.125s After	-123.0 dBm	-12.25 dB	4	`a8`	ShortFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.137s After	-123.0 dBm	-12.25 dB	4	`a8`	ShortFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.149s After	-123.0 dBm	-12.25 dB	4	`a8`	ShortFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.161s After	-123.0 dBm	-12.25 dB	4	`a8`	ShortFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.173s After	-123.0 dBm	-12.25 dB	4	`a8`	ShortFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.184s After	-123.0 dBm	-12.25 dB	4	`a8`	ShortFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.195s After	-123.0 dBm	-12.25 dB	4	`a8`	ShortFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.205s After	-123.0 dBm	-12.25 dB	4	`a8`	ShortFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.216s After	-123.0 dBm	-12.25 dB	4	`a8`	ShortFast	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.227s After	-123.0 dBm	-12.25 dB	4	`a8`	ShortTurbo	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.238s After	-123.0 dBm	-12.25 dB	4	`a8`	ShortTurbo	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.249s After	-123.0 dBm	-12.25 dB	4	`a8`	ShortTurbo	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.260s After	-123.0 dBm	-12.25 dB	4	`a8`	ShortTurbo	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.272s After	-123.0 dBm	-12.25 dB	4	`a8`	ShortTurbo	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.284s After	-123.0 dBm	-12.25 dB	4	`a8`	ShortTurbo	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.296s After	-123.0 dBm	-12.25 dB	4	`a8`	ShortTurbo	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.308s After	-123.0 dBm	-12.25 dB	4	`a8`	ShortTurbo	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.320s After	-123.0 dBm	-12.25 dB	4	`a8`	ShortTurbo	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.331s After	-123.0 dBm	-12.25 dB	4	`a8`	ShortTurbo	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.343s After	-123.0 dBm	-12.25 dB	4	`a8`	ShortTurbo	2026-05-16 07:00:57 UTC	View
Meshtastic b018 (b018)	+0.355s After	-123.0 dBm	-12.25 dB	4	`a8`	LongFast	2026-05-16 07:00:57 UTC	View

45

Total Receptions

1

Unique Gateways