Packet #17716237 Success

POSITION_APP packet from Seri Base d120 (SRB) to !ffffffff

Total Receptions

Unique Gateways

Hop Count

Payload Bytes

Packet Information

Database ID:	17716237
Mesh Packet ID:	`0x04876f6f` Used for correlation across gateways
Timestamp:	2026-03-27 05:25:54 UTC
From Node:	Seri Base d120 (SRB)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	Seri Base d120 (SRB)
Channel:	ShortFast
RSSI:	Unknown
SNR:	Unknown
Hop Info:	0/7 hops Start: 7, Limit: 7
Relay Node:	`20` SRB 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:	43.417600°
Longitude:	-80.537190°
Altitude:	340 m
Precision:	15 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:	!16ced120
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
+ 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`	`!16ced120` 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`	`382652704` 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`	`1774589153` 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`	`32` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1774589154.3183358` 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: ~729.0m 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:	`!16ced120`
Position Precision:	15 bits (~729.0m accuracy)
Position precision meters:	`729.0`
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": 43.4176, "longitude": -80.5371904, "altitude": 340, "sats_in_view": null, "precision_bits": 15 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!16ced120", "channel_id": "ShortFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 382652704, "to": 4294967295, "id": 75984751, "rx_time": 1774589153, "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": 32, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d0000e119150000ffcf18d40225e114c66928017800800100b8010f", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 434176000, "longitude_i": -805371904, "altitude": 340, "time": 1774589153, "location_source": "LOC_MANUAL", "ground_speed": 0, "ground_track": 0, "precision_bits": 15, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }

Raw Packet Data (28 bytes)

0d0000e119150000ffcf18d40225e114c66928017800800100b8010f

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	Hops	Relay	Channel	Timestamp	Actions
Seri Base d120 (SRB) Primary	0.000s Reference	Unknown	Unknown	0	`20` SRB	ShortFast	2026-03-27 05:25:54 UTC	Current
Seri Base d120 (SRB)	-0.316s Before	Unknown	Unknown	0	`20` SRB	LongFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	-0.292s Before	Unknown	Unknown	0	`20` SRB	LongFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	-0.281s Before	Unknown	Unknown	0	`20` SRB	LongFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	-0.263s Before	Unknown	Unknown	0	`20` SRB	LongFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	-0.242s Before	Unknown	Unknown	0	`20` SRB	LongFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	-0.225s Before	Unknown	Unknown	0	`20` SRB	LongFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	-0.214s Before	Unknown	Unknown	0	`20` SRB	LongFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	-0.204s Before	Unknown	Unknown	0	`20` SRB	LongFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	-0.193s Before	Unknown	Unknown	0	`20` SRB	LongFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	-0.183s Before	Unknown	Unknown	0	`20` SRB	LongFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	-0.166s Before	Unknown	Unknown	0	`20` SRB	LongFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	-0.156s Before	Unknown	Unknown	0	`20` SRB	MediumFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	-0.144s Before	Unknown	Unknown	0	`20` SRB	MediumFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	-0.132s Before	Unknown	Unknown	0	`20` SRB	MediumFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	-0.120s Before	Unknown	Unknown	0	`20` SRB	MediumFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	-0.108s Before	Unknown	Unknown	0	`20` SRB	MediumFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	-0.097s Before	Unknown	Unknown	0	`20` SRB	MediumFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	-0.086s Before	Unknown	Unknown	0	`20` SRB	MediumFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	-0.074s Before	Unknown	Unknown	0	`20` SRB	MediumFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	-0.063s Before	Unknown	Unknown	0	`20` SRB	MediumFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	-0.053s Before	Unknown	Unknown	0	`20` SRB	MediumFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	-0.043s Before	Unknown	Unknown	0	`20` SRB	MediumFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	-0.031s Before	Unknown	Unknown	0	`20` SRB	ShortFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	-0.010s Before	Unknown	Unknown	0	`20` SRB	ShortFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	+0.010s After	Unknown	Unknown	0	`20` SRB	ShortFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	+0.021s After	Unknown	Unknown	0	`20` SRB	ShortFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	+0.031s After	Unknown	Unknown	0	`20` SRB	ShortFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	+0.043s After	Unknown	Unknown	0	`20` SRB	ShortFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	+0.055s After	Unknown	Unknown	0	`20` SRB	ShortFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	+0.067s After	Unknown	Unknown	0	`20` SRB	ShortFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	+0.079s After	Unknown	Unknown	0	`20` SRB	ShortFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	+0.090s After	Unknown	Unknown	0	`20` SRB	ShortFast	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	+0.392s After	Unknown	Unknown	0	`20` SRB	ShortTurbo	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	+0.403s After	Unknown	Unknown	0	`20` SRB	ShortTurbo	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	+0.416s After	Unknown	Unknown	0	`20` SRB	ShortTurbo	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	+0.428s After	Unknown	Unknown	0	`20` SRB	ShortTurbo	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	+0.438s After	Unknown	Unknown	0	`20` SRB	ShortTurbo	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	+0.449s After	Unknown	Unknown	0	`20` SRB	ShortTurbo	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	+0.460s After	Unknown	Unknown	0	`20` SRB	ShortTurbo	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	+0.478s After	Unknown	Unknown	0	`20` SRB	ShortTurbo	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	+0.496s After	Unknown	Unknown	0	`20` SRB	ShortTurbo	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	+0.516s After	Unknown	Unknown	0	`20` SRB	ShortTurbo	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	+0.536s After	Unknown	Unknown	0	`20` SRB	ShortTurbo	2026-03-27 05:25:54 UTC	View
Seri Base d120 (SRB)	+0.557s After	Unknown	Unknown	0	`20` SRB	LongFast	2026-03-27 05:25:54 UTC	View
VE3WNP-12 (WNP)	+3.069s After	-72.0 dBm	6.00 dB	1	`68` WNPr	LongFast	2026-03-27 05:25:57 UTC	View

46

Total Receptions

2

Unique Gateways