Packet #17816560 Success

POSITION_APP packet from Meshtastic 16d0 (16d0) to !ffffffff

Total Receptions

Unique Gateways

Hop Count

Payload Bytes

Packet Information

Database ID:	17816560
Mesh Packet ID:	`0x63950805` Used for correlation across gateways
Timestamp:	2026-03-27 10:29:35 UTC
From Node:	Meshtastic 16d0 (16d0)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	Tracer-Mesh-bd1c (bd1c)
Channel:	ShortFast
RSSI:	-116 dBm
SNR:	-18.5 dBm
Hop Info:	4/4 hops Start: 4, Limit: 0
Relay Node:	`e4` boop 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:	43.175117°
Longitude:	-79.455846°
Altitude:	100 m
Satellites:	3
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:	!9ea0bd1c
Channel:	ShortFast
Payload Type:	POSITION_APP
Hop Count:	4 / 4

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
+ 2 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!9ea0bd1c` 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`	`4055635664` 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`	Not set	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`4` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-116.0` dBm Signal strength at gateway	int32
`rx_snr`	`-18.50` dB Signal quality at gateway	float
`rx_time`	`1774607373` 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`	`228` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1774607375.6601884` 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

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:	`!9ea0bd1c`
Position Precision:	13 bits (~2900.0m accuracy)
Position precision meters:	`2900.0`
Signal Metrics:	RSSI: -116.0 dBm SNR: -18.50 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": 43.1751168, "longitude": -79.4558464, "altitude": 100, "sats_in_view": 3, "precision_bits": 13 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!9ea0bd1c", "channel_id": "ShortFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 4055635664, "to": 4294967295, "id": 1670711301, "rx_time": 1774607373, "rx_snr": -18.5, "rx_rssi": -116, "hop_limit": 0, "hop_start": 4, "via_mqtt": false, "want_ack": false, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": false, "next_hop": 0, "relay_node": 228, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d0000bc19150000a4d0186425f25bc669280258f20478058001f0a2d70e980103b8010d", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 431751168, "longitude_i": -794558464, "altitude": 100, "time": 1774607346, "location_source": "LOC_INTERNAL", "PDOP": 626, "ground_speed": 5, "ground_track": 30790000, "sats_in_view": 3, "precision_bits": 13, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }

Raw Packet Data (36 bytes)

0d0000bc19150000a4d0186425f25bc669280258f20478058001f0a2d70e980103b8010d

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
Tracer-Mesh-bd1c (bd1c) Primary	0.000s Reference	-116.0 dBm	-18.50 dB	4	`e4` boop	ShortFast	2026-03-27 10:29:35 UTC	Current
Tracer-Mesh-bd1c (bd1c)	-0.383s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	LongFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.358s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	LongFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.347s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	LongFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.331s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	LongFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.315s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	LongFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.305s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	LongFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.287s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	LongFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.275s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	LongFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.263s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	LongFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.251s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	LongFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.240s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	LongFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.228s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	MediumFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.216s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	MediumFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.205s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	MediumFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.194s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	MediumFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.183s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	MediumFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.173s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	MediumFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.162s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	MediumFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.151s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	MediumFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.140s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	MediumFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.129s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	MediumFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.117s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	MediumFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.105s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	ShortFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.093s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	ShortFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.080s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	ShortFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.069s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	ShortFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.057s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	ShortFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.045s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	ShortFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.033s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	ShortFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.022s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	ShortFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	-0.011s Before	-116.0 dBm	-18.50 dB	4	`e4` boop	ShortFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	+0.011s After	-116.0 dBm	-18.50 dB	4	`e4` boop	ShortFast	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	+0.022s After	-116.0 dBm	-18.50 dB	4	`e4` boop	ShortTurbo	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	+0.033s After	-116.0 dBm	-18.50 dB	4	`e4` boop	ShortTurbo	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	+0.044s After	-116.0 dBm	-18.50 dB	4	`e4` boop	ShortTurbo	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	+0.054s After	-116.0 dBm	-18.50 dB	4	`e4` boop	ShortTurbo	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	+0.067s After	-116.0 dBm	-18.50 dB	4	`e4` boop	ShortTurbo	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	+0.079s After	-116.0 dBm	-18.50 dB	4	`e4` boop	ShortTurbo	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	+0.091s After	-116.0 dBm	-18.50 dB	4	`e4` boop	ShortTurbo	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	+0.104s After	-116.0 dBm	-18.50 dB	4	`e4` boop	ShortTurbo	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	+0.116s After	-116.0 dBm	-18.50 dB	4	`e4` boop	ShortTurbo	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	+0.127s After	-116.0 dBm	-18.50 dB	4	`e4` boop	ShortTurbo	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	+0.139s After	-116.0 dBm	-18.50 dB	4	`e4` boop	ShortTurbo	2026-03-27 10:29:35 UTC	View
Tracer-Mesh-bd1c (bd1c)	+0.151s After	-116.0 dBm	-18.50 dB	4	`e4` boop	LongFast	2026-03-27 10:29:35 UTC	View

45

Total Receptions

1

Unique Gateways