Packet #27785572 Success

POSITION_APP packet from COSLADA f1dc 🇪🇦🛰️ (f1dc) to Sierra norte Madrid ⛰️🗼🌞 (SNM)

Total Receptions

Unique Gateways

Hop Count

Payload Bytes

Packet Information

Database ID:	27785572
Mesh Packet ID:	`0x34b9cb59` Used for correlation across gateways
Timestamp:	2025-12-15 08:56:57 UTC
From Node:	COSLADA f1dc 🇪🇦🛰️ (f1dc)
To Node:	Sierra norte Madrid ⛰️🗼🌞 (SNM)
Success:	Processed
Protocol:	POSITION_APP Port: 3

Gateway:	NodeJPL6 (JPL6)
Channel:	MediumFast
RSSI:	-99 dBm
SNR:	-11.5 dBm
Hop Info:	2/4 hops Start: 4, Limit: 2
Relay Node:	`b0` Vb2 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: 26 bytes

Decoded: Yes

Decoded Data:

Latitude:	40.429158°
Longitude:	-3.545498°
Altitude:	686 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:	26 bytes
Gateway:	!b2a70a38
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`	`!b2a70a38` Node ID format
`channel_id`	`MediumFast`
`packet`	`MeshPacket` (26 bytes) Contains the actual mesh network packet

MeshPacket Fields

Core mesh packet with routing and payload information

Field	Value	Type
`from`	`2661347804` Source node ID	uint32
`to`	`1129719940` Target node ID	uint32
`decoded.portnum`	`3` POSITION_APP	enum
`decoded.payload_length`	`26` 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`	`-99.0` dBm Signal strength at gateway	int32
`rx_snr`	`-11.50` dB Signal quality at gateway	float
`rx_time`	`1765789017` 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`	`176` Relay node ID	uint32
`tx_after`	Not set	uint32
`timestamp`	`1765789017.7200801` 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: ~729.0m 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:	`!b2a70a38`
Position Precision:	15 bits (~729.0m accuracy)
Position precision meters:	`729.0`
Signal Metrics:	RSSI: -99.0 dBm SNR: -11.50 dB

Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:

Protocol:	POSITION_APP
Size:	26 bytes
Decoded:	Yes

Complete Payload Data (JSON):

{ "latitude": 40.4291584, "longitude": -3.5454976, "altitude": 686, "sats_in_view": null, "precision_bits": 15 }

Complete Protobuf Decode (JSON)

{ "service_envelope": { "gateway_id": "!b2a70a38", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2661347804, "to": 1129719940, "id": 884591449, "rx_time": 1765789017, "rx_snr": -11.5, "rx_rssi": -99, "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": 176, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00001918150000e3fd18ae052554cd3f69280258db05b8010f", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 404291584, "longitude_i": -35454976, "altitude": 686, "time": 1765789012, "location_source": "LOC_INTERNAL", "PDOP": 731, "precision_bits": 15, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }

Raw Packet Data (26 bytes)

0d00001918150000e3fd18ae052554cd3f69280258db05b8010f

Hex Analysis:

Size:	26 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
NodeJPL6 (JPL6) Primary	0.000s Reference	-99.0 dBm	-11.50 dB	2	`b0` Vb2	MediumFast	2025-12-15 08:56:57 UTC	Current
GRN1-Base🗼🌐 🔋 (GRN1)	+0.304s After	-106.0 dBm	-12.75 dB	1	`6a` b76a	MediumFast	2025-12-15 08:56:58 UTC	View
Wake Up, Neo...📡 (NEO)	+0.431s After	-102.0 dBm	-4.50 dB	2	`f5` RPT4	MediumFast	2025-12-15 08:56:58 UTC	View
Meshtastic 18a4 (18a4)	+0.656s After	-58.0 dBm	12.75 dB	3	`60` 1760	MediumFast	2025-12-15 08:56:58 UTC	View
Meshtastic 1760 (1760)	+0.768s After	-117.0 dBm	-2.50 dB	2	`f5` RPT4	MediumFast	2025-12-15 08:56:58 UTC	View
JAGO1_Cañaveral (JAGO)	+0.944s After	-121.0 dBm	-12.25 dB	2	`b0` Vbm , PUPM , Vb2	MediumFast	2025-12-15 08:56:58 UTC	View
MakeSpaceMadrid (MKS)	+1.500s After	-94.0 dBm	10.25 dB	4	`d1` MKS2	MediumFast	2025-12-15 08:56:59 UTC	View
Venturada2 🗼🌞 (Vb2)	+1.677s After	-87.0 dBm	-0.50 dB	1	`6a` b76a	MediumFast	2025-12-15 08:56:59 UTC	View
Karabanchel_Baldur (KarB)	+1.774s After	-100.0 dBm	-5.50 dB	4	`90` C181	MediumFast	2025-12-15 08:56:59 UTC	View
Fenix (FENX)	+1.818s After	-119.0 dBm	-13.00 dB	2	`61` TO1	MediumFast	2025-12-15 08:56:59 UTC	View
PXT_Home (PXT1)	+2.179s After	-110.0 dBm	-4.00 dB	4	`48` mfms	MediumFast	2025-12-15 08:56:59 UTC	View
P3 iGate 🏠🌐 (P3N2)	+3.558s After	-38.0 dBm	11.00 dB	3	`25` P3N1	MediumFast	2025-12-15 08:57:01 UTC	View
Ocumare Norte🗼🌐 (RRN)	+3.662s After	-108.0 dBm	-12.50 dB	2	`b0` Vbm , Vb2	MediumFast	2025-12-15 08:57:01 UTC	View
XiaoWatt c4c8 🌐🔌 (c4c8)	+3.886s After	-79.0 dBm	8.00 dB	2	`b0` Vbm , Vb2	MediumFast	2025-12-15 08:57:01 UTC	View
Quass001 ☄️ (Q001)	+4.435s After	-50.0 dBm	10.25 dB	3	`3a` Q005	MediumFast	2025-12-15 08:57:02 UTC	View
Quixote_JS8_5🗼🌐 (QXT5)	+4.484s After	-114.0 dBm	-7.25 dB	4	-	MediumFast	2025-12-15 08:57:02 UTC	View
Eagle’s Nest (EAGL)	+4.884s After	-102.0 dBm	2.00 dB	3	`48` SMR1	MediumFast	2025-12-15 08:57:02 UTC	View
Quixote_JS8_7 (QXT7)	+5.482s After	-18.0 dBm	11.00 dB	4	-	MediumFast	2025-12-15 08:57:03 UTC	View
Meshtastic b2b4📡🌐 (b2b4)	+6.111s After	-117.0 dBm	-14.50 dB	3	`1c` 🐷	MediumFast	2025-12-15 08:57:03 UTC	View
Skynet (Sky)	+7.429s After	-79.0 dBm	6.25 dB	3	`1c` 🐷	MediumFast	2025-12-15 08:57:05 UTC	View
Getafe ☀️ (GTF)	+7.441s After	-119.0 dBm	-8.50 dB	3	`1c` 🐷	MediumFast	2025-12-15 08:57:05 UTC	View
tizon (Sylv)	+7.446s After	-106.0 dBm	0.50 dB	3	`1c` 🐷	MediumFast	2025-12-15 08:57:05 UTC	View
Justicia Meshtastic b0e4 🏢 (b0e4)	+7.886s After	-115.0 dBm	-10.00 dB	4	`25` 🌇	MediumFast	2025-12-15 08:57:05 UTC	View
ETH Maverick (ET01)	+9.640s After	-115.0 dBm	-13.75 dB	4	`f5` SPK3	MediumFast	2025-12-15 08:57:07 UTC	View

24

Total Receptions

24

Unique Gateways