Packet #17515940 Success

POSITION_APP packet from Essex 78ca (78ca) to !ffffffff

Total Receptions

Unique Gateways

Hop Count

Payload Bytes

Packet Information

Database ID:	17515940
Mesh Packet ID:	`0x1c71234c` Used for correlation across gateways
Timestamp:	2026-03-26 18:10:28 UTC
From Node:	Essex 78ca (78ca)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	Essex 78ca (78ca)
Channel:	ShortFast
RSSI:	Unknown
SNR:	Unknown
Hop Info:	0/3 hops Start: 3, Limit: 3
Relay Node:	`ca` 78ca 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: 37 bytes

Decoded: Yes

Decoded Data:

Latitude:	42.178970°
Longitude:	-82.811290°
Altitude:	171 m
Satellites:	7
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:	37 bytes
Gateway:	!6fa578ca
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`	`!6fa578ca` Node ID format
`channel_id`	`ShortFast`
`packet`	`MeshPacket` (37 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`1873115338` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`3` POSITION_APP	enum
`decoded.payload_length`	`37` 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`	`1774548626` 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`	`202` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1774548628.382335` 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:	`!6fa578ca`
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:	37 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "latitude": 42.1789696, "longitude": -82.8112896, "altitude": 171, "sats_in_view": 7, "precision_bits": 13 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!6fa578ca", "channel_id": "ShortFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1873115338, "to": 4294967295, "id": 477176652, "rx_time": 1774548626, "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": 202, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00002419150000a4ce18ab01259276c569280258b00178018001f8c1cb05980107b8010d", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 421789696, "longitude_i": -828112896, "altitude": 171, "time": 1774548626, "location_source": "LOC_INTERNAL", "PDOP": 176, "ground_speed": 1, "ground_track": 11723000, "sats_in_view": 7, "precision_bits": 13, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }

Raw Packet Data (37 bytes)

0d00002419150000a4ce18ab01259276c569280258b00178018001f8c1cb05980107b8010d

Hex Analysis:

Size:	37 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
Essex 78ca (78ca) Primary	0.000s Reference	Unknown	Unknown	`ca` 78ca	ShortFast	2026-03-26 18:10:28 UTC	Current
Essex 78ca (78ca)	-0.928s Before	Unknown	Unknown	`ca` 78ca	LongFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.856s Before	Unknown	Unknown	`ca` 78ca	LongFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.836s Before	Unknown	Unknown	`ca` 78ca	LongFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.817s Before	Unknown	Unknown	`ca` 78ca	LongFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.800s Before	Unknown	Unknown	`ca` 78ca	LongFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.713s Before	Unknown	Unknown	`ca` 78ca	LongFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.701s Before	Unknown	Unknown	`ca` 78ca	LongFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.689s Before	Unknown	Unknown	`ca` 78ca	LongFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.676s Before	Unknown	Unknown	`ca` 78ca	LongFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.664s Before	Unknown	Unknown	`ca` 78ca	LongFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.652s Before	Unknown	Unknown	`ca` 78ca	LongFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.640s Before	Unknown	Unknown	`ca` 78ca	MediumFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.628s Before	Unknown	Unknown	`ca` 78ca	MediumFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.574s Before	Unknown	Unknown	`ca` 78ca	MediumFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.518s Before	Unknown	Unknown	`ca` 78ca	MediumFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.369s Before	Unknown	Unknown	`ca` 78ca	MediumFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	-0.358s Before	Unknown	Unknown	`ca` 78ca	MediumFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	-0.347s Before	Unknown	Unknown	`ca` 78ca	MediumFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	-0.311s Before	Unknown	Unknown	`ca` 78ca	MediumFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	-0.275s Before	Unknown	Unknown	`ca` 78ca	MediumFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	-0.192s Before	Unknown	Unknown	`ca` 78ca	MediumFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	-0.135s Before	Unknown	Unknown	`ca` 78ca	MediumFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	-0.099s Before	Unknown	Unknown	`ca` 78ca	ShortFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.034s After	Unknown	Unknown	`ca` 78ca	ShortFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.046s After	Unknown	Unknown	`ca` 78ca	ShortFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.059s After	Unknown	Unknown	`ca` 78ca	ShortFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.094s After	Unknown	Unknown	`ca` 78ca	ShortFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.105s After	Unknown	Unknown	`ca` 78ca	ShortFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.117s After	Unknown	Unknown	`ca` 78ca	ShortFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.128s After	Unknown	Unknown	`ca` 78ca	ShortFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.161s After	Unknown	Unknown	`ca` 78ca	ShortFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.241s After	Unknown	Unknown	`ca` 78ca	ShortFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.276s After	Unknown	Unknown	`ca` 78ca	ShortTurbo	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.288s After	Unknown	Unknown	`ca` 78ca	ShortTurbo	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.386s After	Unknown	Unknown	`ca` 78ca	ShortTurbo	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.398s After	Unknown	Unknown	`ca` 78ca	ShortTurbo	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.435s After	Unknown	Unknown	`ca` 78ca	ShortTurbo	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.514s After	Unknown	Unknown	`ca` 78ca	ShortTurbo	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.568s After	Unknown	Unknown	`ca` 78ca	ShortTurbo	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.628s After	Unknown	Unknown	`ca` 78ca	ShortTurbo	2026-03-26 18:10:29 UTC	View
Essex 78ca (78ca)	+0.640s After	Unknown	Unknown	`ca` 78ca	ShortTurbo	2026-03-26 18:10:29 UTC	View
Essex 78ca (78ca)	+0.652s After	Unknown	Unknown	`ca` 78ca	ShortTurbo	2026-03-26 18:10:29 UTC	View
Essex 78ca (78ca)	+0.664s After	Unknown	Unknown	`ca` 78ca	ShortTurbo	2026-03-26 18:10:29 UTC	View
Essex 78ca (78ca)	+0.674s After	Unknown	Unknown	`ca` 78ca	LongFast	2026-03-26 18:10:29 UTC	View

45

Total Receptions

1

Unique Gateways