Packet #39487174 Success

POSITION_APP packet from Mechanicus Alpha (M1) to !ffffffff

Total Receptions

Unique Gateways

Hop Count

Payload Bytes

Packet Information

Database ID:	39487174
Mesh Packet ID:	`0x104c1733` Used for correlation across gateways
Timestamp:	2026-05-16 07:40:45 UTC
From Node:	Mechanicus Alpha (M1)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	Mechanicus Alpha (M1)
Channel:	ShortFast
RSSI:	Unknown
SNR:	Unknown
Hop Info:	0/7 hops Start: 7, Limit: 7
Relay Node:	`8c` M1 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: 28 bytes

Decoded: Yes

Decoded Data:

Latitude:	49.922867°
Longitude:	-97.149747°
Altitude:	233 m
Precision:	18 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:	28 bytes
Gateway:	!433e868c
Channel:	ShortFast
Payload Type:	POSITION_APP
Hop Count:	Unknown / 7

Privacy Summary

Exposure Level:
Broadcast

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

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!433e868c` Node ID format
`channel_id`	`ShortFast`
`packet`	`MeshPacket` (28 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`1128171148` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`3` POSITION_APP	enum
`decoded.payload_length`	`28` 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`	`1778917244` 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`	`140` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1778917245.7865722` 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
✓ Zero-hop: direct from source to MQTT gateway

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
⚠ Full GPS precision shared

MQTT-Specific Fields

Gateway ID:	`!433e868c`
Position Precision:	18 bits (~91.0m accuracy)
Position precision meters:	`91.0`
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:	28 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "latitude": 49.9228672, "longitude": -97.1497472, "altitude": 233, "sats_in_view": null, "precision_bits": 18 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!433e868c", "channel_id": "ShortFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1128171148, "to": 4294967295, "id": 273422131, "rx_time": 1778917244, "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": 140, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00a0c11d15002018c618e901257c1f086a28017800800100b80112", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 499228672, "longitude_i": -971497472, "altitude": 233, "time": 1778917244, "location_source": "LOC_MANUAL", "ground_speed": 0, "ground_track": 0, "precision_bits": 18, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }

Raw Packet Data (28 bytes)

0d00a0c11d15002018c618e901257c1f086a28017800800100b80112

Hex Analysis:

Size:	28 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
Mechanicus Alpha (M1) Primary	0.000s Reference	Unknown	Unknown	`8c` M1	ShortFast	2026-05-16 07:40:45 UTC	Current
Mechanicus Alpha (M1)	-0.273s Before	Unknown	Unknown	`8c` M1	LongFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	-0.248s Before	Unknown	Unknown	`8c` M1	LongFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	-0.236s Before	Unknown	Unknown	`8c` M1	LongFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	-0.225s Before	Unknown	Unknown	`8c` M1	LongFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	-0.214s Before	Unknown	Unknown	`8c` M1	LongFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	-0.203s Before	Unknown	Unknown	`8c` M1	LongFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	-0.193s Before	Unknown	Unknown	`8c` M1	LongFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	-0.181s Before	Unknown	Unknown	`8c` M1	LongFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	-0.171s Before	Unknown	Unknown	`8c` M1	LongFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	-0.159s Before	Unknown	Unknown	`8c` M1	LongFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	-0.148s Before	Unknown	Unknown	`8c` M1	LongFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	-0.138s Before	Unknown	Unknown	`8c` M1	MediumFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	-0.127s Before	Unknown	Unknown	`8c` M1	MediumFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	-0.115s Before	Unknown	Unknown	`8c` M1	MediumFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	-0.103s Before	Unknown	Unknown	`8c` M1	MediumFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	-0.091s Before	Unknown	Unknown	`8c` M1	MediumFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	-0.079s Before	Unknown	Unknown	`8c` M1	MediumFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	-0.067s Before	Unknown	Unknown	`8c` M1	MediumFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	-0.055s Before	Unknown	Unknown	`8c` M1	MediumFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	-0.043s Before	Unknown	Unknown	`8c` M1	MediumFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	-0.032s Before	Unknown	Unknown	`8c` M1	MediumFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	-0.021s Before	Unknown	Unknown	`8c` M1	MediumFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	-0.010s Before	Unknown	Unknown	`8c` M1	ShortFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	+0.010s After	Unknown	Unknown	`8c` M1	ShortFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	+0.021s After	Unknown	Unknown	`8c` M1	ShortFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	+0.032s After	Unknown	Unknown	`8c` M1	ShortFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	+0.043s After	Unknown	Unknown	`8c` M1	ShortFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	+0.053s After	Unknown	Unknown	`8c` M1	ShortFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	+0.065s After	Unknown	Unknown	`8c` M1	ShortFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	+0.078s After	Unknown	Unknown	`8c` M1	ShortFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	+0.090s After	Unknown	Unknown	`8c` M1	ShortFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	+0.102s After	Unknown	Unknown	`8c` M1	ShortFast	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	+0.114s After	Unknown	Unknown	`8c` M1	ShortTurbo	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	+0.126s After	Unknown	Unknown	`8c` M1	ShortTurbo	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	+0.138s After	Unknown	Unknown	`8c` M1	ShortTurbo	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	+0.150s After	Unknown	Unknown	`8c` M1	ShortTurbo	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	+0.161s After	Unknown	Unknown	`8c` M1	ShortTurbo	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	+0.172s After	Unknown	Unknown	`8c` M1	ShortTurbo	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	+0.183s After	Unknown	Unknown	`8c` M1	ShortTurbo	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	+0.194s After	Unknown	Unknown	`8c` M1	ShortTurbo	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	+0.205s After	Unknown	Unknown	`8c` M1	ShortTurbo	2026-05-16 07:40:45 UTC	View
Mechanicus Alpha (M1)	+0.216s After	Unknown	Unknown	`8c` M1	ShortTurbo	2026-05-16 07:40:46 UTC	View
Mechanicus Alpha (M1)	+0.227s After	Unknown	Unknown	`8c` M1	ShortTurbo	2026-05-16 07:40:46 UTC	View
Mechanicus Alpha (M1)	+0.237s After	Unknown	Unknown	`8c` M1	LongFast	2026-05-16 07:40:46 UTC	View

45

Total Receptions

1

Unique Gateways