Packet #27081313 Success

POSITION_APP packet from 🌐Charly Torre 3🛰 (C186) to !ffffffff

Total Receptions

Unique Gateways

Hop Count

Payload Bytes

Packet Information

Database ID:	27081313
Mesh Packet ID:	`0x5f256ec9` Used for correlation across gateways
Timestamp:	2025-12-12 00:16:13 UTC
From Node:	🌐Charly Torre 3🛰 (C186)
To Node:	!ffffffff (ffff)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	ETH Gripen (ET39)
Channel:	MediumFast
RSSI:	-81 dBm
SNR:	-13.75 dBm
Hop Info:	2/4 hops Start: 4, Limit: 2
Relay Node:	`24` vid 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: 27 bytes

Decoded: Yes

Decoded Data:

Latitude:	40.343142°
Longitude:	-3.706880°
Altitude:	25 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:	27 bytes
Gateway:	!b2a7c994
Channel:	MediumFast
Payload Type:	POSITION_APP
Hop Count:	2 / 4

Privacy Summary

Exposure Level:
Broadcast

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: MediumFast
+ 1 more...

Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 3 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!b2a7c994` Node ID format
`channel_id`	`MediumFast`
`packet`	`MeshPacket` (27 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2047863857` Source node ID	uint32
`to`	`4294967295` (Broadcast) Visible to all nodes	uint32
`decoded.portnum`	`3` POSITION_APP	enum
`decoded.payload_length`	`27` bytes	size
`hop_limit`	`2` Remaining hops allowed	uint32
`hop_start`	`4` Initial hop limit	uint32
`hops_taken`	`2` Calculated: hop_start - hop_limit	derived
`rx_rssi`	`-81.0` dBm Signal strength at gateway	int32
`rx_snr`	`-13.75` dB Signal quality at gateway	float
`rx_time`	`1765498566` 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`	`36` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1765498573.4203072` 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: MediumFast
✓ Gateway node ID tracked

Exposure Risks:

⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
⚠ Full GPS precision shared
⚠ Multi-hop path visible (2 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!b2a7c994`
Position Precision:	18 bits (~91.0m accuracy)
Position precision meters:	`91.0`
Signal Metrics:	RSSI: -81.0 dBm SNR: -13.75 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	POSITION_APP
Size:	27 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "latitude": 40.3431424, "longitude": -3.70688, "altitude": 25, "sats_in_view": null, "precision_bits": 18 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!b2a7c994", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2047863857, "to": 4294967295, "id": 1596288713, "rx_time": 1765498566, "rx_snr": -13.75, "rx_rssi": -81, "hop_limit": 2, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 36, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00e00b18150060cafd181925d25e3b6928017800800100b80112", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 403431424, "longitude_i": -37068800, "altitude": 25, "time": 1765498578, "location_source": "LOC_MANUAL", "ground_speed": 0, "ground_track": 0, "precision_bits": 18, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }

Raw Packet Data (27 bytes)

0d00e00b18150060cafd181925d25e3b6928017800800100b80112

Hex Analysis:

Size:	27 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
ETH Gripen (ET39) Primary	0.000s Reference	-81.0 dBm	-13.75 dB	2	`24` vid	MediumFast	2025-12-12 00:16:13 UTC	Current
Karabanchel_Baldur (KarB)	-0.513s Before	-101.0 dBm	-1.00 dB	1	`90` C181	MediumFast	2025-12-12 00:16:12 UTC	View
Wake Up, Neo...📡 (NEO)	-0.003s Before	-96.0 dBm	-7.75 dB	2	`24` vid	MediumFast	2025-12-12 00:16:13 UTC	View
XiaoWatt c4c8 🌐🔌 (c4c8)	+0.028s After	-92.0 dBm	-2.75 dB	2	`24` vid	MediumFast	2025-12-12 00:16:13 UTC	View
mario (mmm)	+0.092s After	-110.0 dBm	-6.25 dB	2	`24` vid	MediumFast	2025-12-12 00:16:13 UTC	View
srs-h3 📡🌐 (srs0)	+0.298s After	-123.0 dBm	-12.50 dB	2	`24` vid	MediumFast	2025-12-12 00:16:13 UTC	View
Meshtastic 870c📡🌐 (870c)	+0.333s After	-112.0 dBm	-5.00 dB	2	`24` vid	MediumFast	2025-12-12 00:16:13 UTC	View
Meshtastic 1760 (1760)	+0.337s After	-124.0 dBm	-5.50 dB	2	`24` vid	MediumFast	2025-12-12 00:16:13 UTC	View
Meshtastic 18a4 (18a4)	+0.708s After	Unknown	Unknown	3	`60` 1760	MediumFast	2025-12-12 00:16:14 UTC	View
Meshtastic b2b4📡🌐 (b2b4)	+0.997s After	-94.0 dBm	5.50 dB	2	`24` vid	MediumFast	2025-12-12 00:16:14 UTC	View
Mec Rocket Meco (MRM)	+1.222s After	-114.0 dBm	-13.50 dB	4	`c0` sdAh	MediumFast	2025-12-12 00:16:14 UTC	View
tizon (Sylv)	+1.326s After	-89.0 dBm	10.00 dB	2	`24` vid	MediumFast	2025-12-12 00:16:14 UTC	View
GRN1-Base🗼🌐 🔋 (GRN1)	+1.366s After	-116.0 dBm	-13.25 dB	2	`24` vid	MediumFast	2025-12-12 00:16:14 UTC	View
Ocumare Norte🗼🌐 (RRN)	+1.684s After	-103.0 dBm	-8.25 dB	3	`b0` Vbm , Vb2	MediumFast	2025-12-12 00:16:15 UTC	View
Getafe ☀️ (GTF)	+9.064s After	-106.0 dBm	3.50 dB	2	`24` vid	MediumFast	2025-12-12 00:16:22 UTC	View
Meshtastic ca85 (ca85)	+11.599s After	-108.0 dBm	-5.25 dB	2	`24` vid	MediumFast	2025-12-12 00:16:25 UTC	View
Test_Skynet_01 (TS01)	+52.558s After	-124.0 dBm	-12.75 dB	3	`d1` 👾	MediumFast	2025-12-12 00:17:05 UTC	View

17

Total Receptions

17

Unique Gateways