Packet #17515943 Success

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

Total Receptions

Unique Gateways

Hop Count

Payload Bytes

Packet Information

Database ID:	17515943
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`	`1774548628.4286733` 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)	-0.974s Before	Unknown	Unknown	`ca` 78ca	LongFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.902s Before	Unknown	Unknown	`ca` 78ca	LongFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.883s Before	Unknown	Unknown	`ca` 78ca	LongFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.863s Before	Unknown	Unknown	`ca` 78ca	LongFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.846s Before	Unknown	Unknown	`ca` 78ca	LongFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.759s Before	Unknown	Unknown	`ca` 78ca	LongFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.747s Before	Unknown	Unknown	`ca` 78ca	LongFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.735s Before	Unknown	Unknown	`ca` 78ca	LongFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.723s Before	Unknown	Unknown	`ca` 78ca	LongFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.710s Before	Unknown	Unknown	`ca` 78ca	LongFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.699s Before	Unknown	Unknown	`ca` 78ca	LongFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.687s Before	Unknown	Unknown	`ca` 78ca	MediumFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.674s Before	Unknown	Unknown	`ca` 78ca	MediumFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.620s Before	Unknown	Unknown	`ca` 78ca	MediumFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.564s Before	Unknown	Unknown	`ca` 78ca	MediumFast	2026-03-26 18:10:27 UTC	View
Essex 78ca (78ca)	-0.415s Before	Unknown	Unknown	`ca` 78ca	MediumFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	-0.405s Before	Unknown	Unknown	`ca` 78ca	MediumFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	-0.394s Before	Unknown	Unknown	`ca` 78ca	MediumFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	-0.357s Before	Unknown	Unknown	`ca` 78ca	MediumFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	-0.321s Before	Unknown	Unknown	`ca` 78ca	MediumFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	-0.238s Before	Unknown	Unknown	`ca` 78ca	MediumFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	-0.182s Before	Unknown	Unknown	`ca` 78ca	MediumFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	-0.146s Before	Unknown	Unknown	`ca` 78ca	ShortFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	-0.046s Before	Unknown	Unknown	`ca` 78ca	ShortFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	-0.013s Before	Unknown	Unknown	`ca` 78ca	ShortFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.012s After	Unknown	Unknown	`ca` 78ca	ShortFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.047s 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)	+0.071s After	Unknown	Unknown	`ca` 78ca	ShortFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.082s After	Unknown	Unknown	`ca` 78ca	ShortFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.114s After	Unknown	Unknown	`ca` 78ca	ShortFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.194s After	Unknown	Unknown	`ca` 78ca	ShortFast	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.230s After	Unknown	Unknown	`ca` 78ca	ShortTurbo	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.242s After	Unknown	Unknown	`ca` 78ca	ShortTurbo	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.340s After	Unknown	Unknown	`ca` 78ca	ShortTurbo	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.352s After	Unknown	Unknown	`ca` 78ca	ShortTurbo	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.388s After	Unknown	Unknown	`ca` 78ca	ShortTurbo	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.468s After	Unknown	Unknown	`ca` 78ca	ShortTurbo	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.521s After	Unknown	Unknown	`ca` 78ca	ShortTurbo	2026-03-26 18:10:28 UTC	View
Essex 78ca (78ca)	+0.582s After	Unknown	Unknown	`ca` 78ca	ShortTurbo	2026-03-26 18:10:29 UTC	View
Essex 78ca (78ca)	+0.594s After	Unknown	Unknown	`ca` 78ca	ShortTurbo	2026-03-26 18:10:29 UTC	View
Essex 78ca (78ca)	+0.606s After	Unknown	Unknown	`ca` 78ca	ShortTurbo	2026-03-26 18:10:29 UTC	View
Essex 78ca (78ca)	+0.617s After	Unknown	Unknown	`ca` 78ca	ShortTurbo	2026-03-26 18:10:29 UTC	View
Essex 78ca (78ca)	+0.628s After	Unknown	Unknown	`ca` 78ca	LongFast	2026-03-26 18:10:29 UTC	View

45

Total Receptions

1

Unique Gateways