Packet #40135189 Success

POSITION_APP packet from brh tracker (brtk) to !ffffffff

Total Receptions

Unique Gateways

Hop Count

Payload Bytes

Packet Information

Database ID:	40135189
Mesh Packet ID:	`0xd981c77e` Used for correlation across gateways
Timestamp:	2026-05-17 20:55:20 UTC
From Node:	brh tracker (brtk)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	brh tracker (brtk)
Channel:	ShortFast
RSSI:	Unknown
SNR:	Unknown
Hop Info:	0/3 hops Start: 3, Limit: 3
Relay Node:	`b5` brtk 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: 36 bytes

Decoded: Yes

Decoded Data:

Latitude:	50.882150°
Longitude:	-114.006426°
Altitude:	1002 m
Satellites:	16
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:	!23e4aeb5
Channel:	ShortFast
Payload Type:	POSITION_APP
Hop Count:	Unknown / 3

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: ShortFast
+ 3 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!23e4aeb5` Node ID format
`channel_id`	`ShortFast`
`packet`	`MeshPacket` (36 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`602189493` 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`	`3` 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`	`1779050930` 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`	`181` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1779051320.5467029` 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: ShortFast
✓ Gateway node ID tracked
✓ Reduced position precision: ~2900.0m accuracy
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers

MQTT-Specific Fields

Gateway ID:	`!23e4aeb5`
Position Precision:	13 bits (~2900.0m accuracy)
Position precision meters:	`2900.0`
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:	36 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "latitude": 50.8821504, "longitude": -114.0064256, "altitude": 1002, "sats_in_view": 16, "precision_bits": 13 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!23e4aeb5", "channel_id": "ShortFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 602189493, "to": 4294967295, "id": 3649161086, "rx_time": 1779050930, "rx_snr": 0.0, "rx_rssi": 0, "hop_limit": 3, "hop_start": 3, "via_mqtt": false, "want_ack": false, "priority": 10, "delayed": 0, "channel_index": null, "pki_encrypted": false, "next_hop": 0, "relay_node": 181, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d0000541e1500000cbc18ea0725b2290a6a2802587778008001e08b980f980110b8010d", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 508821504, "longitude_i": -1140064256, "altitude": 1002, "time": 1779050930, "location_source": "LOC_INTERNAL", "PDOP": 119, "ground_speed": 0, "ground_track": 31852000, "sats_in_view": 16, "precision_bits": 13, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }

Raw Packet Data (36 bytes)

0d0000541e1500000cbc18ea0725b2290a6a2802587778008001e08b980f980110b8010d

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	Relay	Channel	Timestamp	Actions
brh tracker (brtk) Primary	0.000s Reference	Unknown	Unknown	`b5` brtk	ShortFast	2026-05-17 20:55:20 UTC	Current
brh tracker (brtk)	-0.290s Before	Unknown	Unknown	`b5` brtk	LongFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	-0.271s Before	Unknown	Unknown	`b5` brtk	LongFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	-0.258s Before	Unknown	Unknown	`b5` brtk	LongFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	-0.246s Before	Unknown	Unknown	`b5` brtk	LongFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	-0.235s Before	Unknown	Unknown	`b5` brtk	LongFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	-0.224s Before	Unknown	Unknown	`b5` brtk	LongFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	-0.213s Before	Unknown	Unknown	`b5` brtk	LongFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	-0.202s Before	Unknown	Unknown	`b5` brtk	LongFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	-0.190s Before	Unknown	Unknown	`b5` brtk	LongFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	-0.179s Before	Unknown	Unknown	`b5` brtk	LongFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	-0.167s Before	Unknown	Unknown	`b5` brtk	LongFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	-0.155s Before	Unknown	Unknown	`b5` brtk	MediumFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	-0.134s Before	Unknown	Unknown	`b5` brtk	MediumFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	-0.123s Before	Unknown	Unknown	`b5` brtk	MediumFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	-0.105s Before	Unknown	Unknown	`b5` brtk	MediumFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	-0.085s Before	Unknown	Unknown	`b5` brtk	MediumFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	-0.068s Before	Unknown	Unknown	`b5` brtk	MediumFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	-0.056s Before	Unknown	Unknown	`b5` brtk	MediumFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	-0.045s Before	Unknown	Unknown	`b5` brtk	MediumFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	-0.034s Before	Unknown	Unknown	`b5` brtk	MediumFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	-0.023s Before	Unknown	Unknown	`b5` brtk	MediumFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	-0.011s Before	Unknown	Unknown	`b5` brtk	MediumFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	+0.011s After	Unknown	Unknown	`b5` brtk	ShortFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	+0.023s After	Unknown	Unknown	`b5` brtk	ShortFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	+0.035s After	Unknown	Unknown	`b5` brtk	ShortFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	+0.049s After	Unknown	Unknown	`b5` brtk	ShortFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	+0.061s After	Unknown	Unknown	`b5` brtk	ShortFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	+0.072s After	Unknown	Unknown	`b5` brtk	ShortFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	+0.085s After	Unknown	Unknown	`b5` brtk	ShortFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	+0.097s After	Unknown	Unknown	`b5` brtk	ShortFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	+0.109s After	Unknown	Unknown	`b5` brtk	ShortFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	+0.121s After	Unknown	Unknown	`b5` brtk	ShortFast	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	+0.132s After	Unknown	Unknown	`b5` brtk	ShortTurbo	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	+0.144s After	Unknown	Unknown	`b5` brtk	ShortTurbo	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	+0.153s After	Unknown	Unknown	`b5` brtk	ShortTurbo	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	+0.170s After	Unknown	Unknown	`b5` brtk	ShortTurbo	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	+0.187s After	Unknown	Unknown	`b5` brtk	ShortTurbo	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	+0.204s After	Unknown	Unknown	`b5` brtk	ShortTurbo	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	+0.223s After	Unknown	Unknown	`b5` brtk	ShortTurbo	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	+0.245s After	Unknown	Unknown	`b5` brtk	ShortTurbo	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	+0.268s After	Unknown	Unknown	`b5` brtk	ShortTurbo	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	+0.289s After	Unknown	Unknown	`b5` brtk	ShortTurbo	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	+0.309s After	Unknown	Unknown	`b5` brtk	ShortTurbo	2026-05-17 20:55:20 UTC	View
brh tracker (brtk)	+0.329s After	Unknown	Unknown	`b5` brtk	LongFast	2026-05-17 20:55:20 UTC	View

45

Total Receptions

1

Unique Gateways