Packet #28076551 Success

POSITION_APP packet from Venturada movil🚗 (Vm) to Sierra norte Madrid ⛰️🗼🌞 (SNM)

Total Receptions

Unique Gateways

Hop Count

Payload Bytes

Packet Information

Database ID:	28076551
Mesh Packet ID:	`0x6bec1b1b` Used for correlation across gateways
Timestamp:	2025-12-16 16:03:11 UTC
From Node:	Venturada movil🚗 (Vm)
To Node:	Sierra norte Madrid ⛰️🗼🌞 (SNM)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	Getafe ☀️ (GTF)
Channel:	MediumFast
RSSI:	-122 dBm
SNR:	-12.5 dBm
Hop Info:	2/4 hops Start: 4, Limit: 2
Relay Node:	`1c` 🐷 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:	40.815821°
Longitude:	-3.591373°
Altitude:	916 m
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:	28 bytes
Gateway:	!9eecf738
Channel:	MediumFast
Payload Type:	POSITION_APP
Hop Count:	2 / 4

Privacy Summary

Exposure Level:
Direct Message

Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 3 more...

Exposure Risks:
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (2 hops)
+ 1 more...

MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

Field	Value
`gateway_id`	`!9eecf738` Node ID format
`channel_id`	`MediumFast`
`packet`	`MeshPacket` (28 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`587411239` Source node ID	uint32
`to`	`1129719940` Target node ID	uint32
`decoded.portnum`	`3` POSITION_APP	enum
`decoded.payload_length`	`28` 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`	`-122.0` dBm Signal strength at gateway	int32
`rx_snr`	`-12.50` dB Signal quality at gateway	float
`rx_time`	`1765900990` 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`	`28` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1765900991.3976536` Unix timestamp	uint32

MQTT Privacy & Exposure Analysis

Analysis of privacy features and exposure risks when packet is shared via MQTT

Exposure Level: Direct Message

Privacy Features:

✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
✓ Custom channel: MediumFast
✓ Gateway node ID tracked
✓ Reduced position precision: ~2900.0m accuracy

Exposure Risks:

⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (2 hops)
⚠ RF signal metrics exposed (location inference possible)

MQTT-Specific Fields

Gateway ID:	`!9eecf738`
Position Precision:	13 bits (~2900.0m accuracy)
Position precision meters:	`2900.0`
Signal Metrics:	RSSI: -122.0 dBm SNR: -12.50 dB

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": 40.8158208, "longitude": -3.5913728, "altitude": 916, "sats_in_view": null, "precision_bits": 13 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!9eecf738", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 587411239, "to": 1129719940, "id": 1810635547, "rx_time": 1765900990, "rx_snr": -12.5, "rx_rssi": -122, "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": 28, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00005418150000dcfd189407259482416928037800800100b8010d", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 408158208, "longitude_i": -35913728, "altitude": 916, "time": 1765900948, "location_source": "LOC_EXTERNAL", "ground_speed": 0, "ground_track": 0, "precision_bits": 13, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }

Raw Packet Data (28 bytes)

0d00005418150000dcfd189407259482416928037800800100b8010d

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
Getafe ☀️ (GTF) Primary	0.000s Reference	-122.0 dBm	-12.50 dB	2	`1c` 🐷	MediumFast	2025-12-16 16:03:11 UTC	Current
Venturada2🗼🌐☀️ (Vb2)	-26.487s Before	-98.0 dBm	0.50 dB	0	`27` Vm , rzrk	MediumFast	2025-12-16 16:02:44 UTC	View
JAGO1_Cañaveral (JAGO)	-25.749s Before	-121.0 dBm	-11.75 dB	1	`b0` Vbm , PUPM , Vb2	MediumFast	2025-12-16 16:02:45 UTC	View
GRN1-Base🗼🌐 🔋 (GRN1)	-25.425s Before	-101.0 dBm	-7.50 dB	1	`b0` Vbm , Vb2	MediumFast	2025-12-16 16:02:45 UTC	View
XiaoWatt c4c8 🌐🔌 (c4c8)	-24.718s Before	-80.0 dBm	2.50 dB	1	`b0` Vbm , Vb2	MediumFast	2025-12-16 16:02:46 UTC	View
ETH Maverick (ET01)	-24.648s Before	-108.0 dBm	-5.75 dB	1	`61` TO1	MediumFast	2025-12-16 16:02:46 UTC	View
P3 iGate 🏠🌐 (P3N2)	-23.604s Before	-36.0 dBm	11.75 dB	2	`25` P3N1	MediumFast	2025-12-16 16:02:47 UTC	View
Villarejo01 (VIL1)	-23.570s Before	-34.0 dBm	10.25 dB	2	`c6` d5c6	MediumFast	2025-12-16 16:02:47 UTC	View
Mec Rocket Meco (MRM)	-23.468s Before	-106.0 dBm	-7.25 dB	3	`a8` CALB	MediumFast	2025-12-16 16:02:47 UTC	View
Meshtastic 1760 (1760)	-20.607s Before	-115.0 dBm	1.50 dB	3	`40` AldB	MediumFast	2025-12-16 16:02:50 UTC	View
Wake Up, Neo...📡 (NEO)	-20.519s Before	-96.0 dBm	-6.50 dB	3	`88` POZ1 , 2b88	MediumFast	2025-12-16 16:02:50 UTC	View
Meshtastic 18a4 (18a4)	-20.354s Before	Unknown	Unknown	4	`60` 1760	MediumFast	2025-12-16 16:02:51 UTC	View
MakeSpaceMadrid (MKS)	-20.327s Before	-98.0 dBm	9.50 dB	4	`d1` MKS2	MediumFast	2025-12-16 16:02:51 UTC	View
[samsepi0l] 📡🌐 (tlg0)	-19.229s Before	-74.0 dBm	10.50 dB	2	`fc` 74fc , Anu2	MediumFast	2025-12-16 16:02:52 UTC	View
PXT_Home (PXT1)	-5.562s Before	-110.0 dBm	-4.50 dB	4	`a4` HelB	MediumFast	2025-12-16 16:03:05 UTC	View
Karabanchel_Baldur (KarB)	-0.326s Before	-96.0 dBm	-14.25 dB	2	`1c` 🐷	MediumFast	2025-12-16 16:03:11 UTC	View
Skynet (Sky)	-0.098s Before	-85.0 dBm	-9.75 dB	2	`1c` 🐷	MediumFast	2025-12-16 16:03:11 UTC	View
tizon (Sylv)	-0.012s Before	-108.0 dBm	0.25 dB	2	`1c` 🐷	MediumFast	2025-12-16 16:03:11 UTC	View
Meshtastic b2b4📡🌐 (b2b4)	+3.392s After	-117.0 dBm	-15.00 dB	3	`88` KarB	MediumFast	2025-12-16 16:03:14 UTC	View

19

Total Receptions

19

Unique Gateways