Packet #27785607 Success

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

24
Total Receptions
24
Unique Gateways
4
Hop Count
26
Payload Bytes
Packet Information
Database ID: 27785607
Mesh Packet ID: 0x34b9cb59
Used for correlation across gateways
Timestamp: 2025-12-15 08:56:59 UTC
From Node: COSLADA f1dc 🇪🇦🛰️ (f1dc)
To Node: Sierra norte Madrid ⛰️🗼🌞 (SNM)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: PXT_Home (PXT1)
Channel: MediumFast
RSSI: -110 dBm
SNR: -4.0 dBm
Hop Info: 4/4 hops
Start: 4, Limit: 0
Relay Node: 48 mfms
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:!849b5278
Channel:MediumFast
Payload Type:POSITION_APP
Hop Count:4 / 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 (4 hops)
+ 1 more...
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !849b5278
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

FieldValueType
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 Not set uint32
hop_start 4
Initial hop limit 		uint32
hops_taken 4
Calculated: hop_start - hop_limit 		derived
rx_rssi -110.0 dBm
Signal strength at gateway 		int32
rx_snr -4.00 dB
Signal quality at gateway 		float
rx_time 1765789019
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 72
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1765789019.898978
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 (4 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !849b5278
Position Precision: 15 bits (~729.0m accuracy)
Position precision meters: 729.0
Signal Metrics: RSSI: -110.0 dBm
SNR: -4.00 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": "!849b5278", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2661347804, "to": 1129719940, "id": 884591449, "rx_time": 1765789019, "rx_snr": -4.0, "rx_rssi": -110, "hop_limit": 0, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 72, "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
PXT_Home (PXT1) Primary 0.000s
Reference 		-110.0 dBm -4.00 dB 4 48 mfms MediumFast 2025-12-15 08:56:59 UTC Current
NodeJPL6 (JPL6) -2.179s
Before 		-99.0 dBm -11.50 dB 2 b0 Vb2 MediumFast 2025-12-15 08:56:57 UTC View
GRN1-Base🗼🌐 🔋 (GRN1) -1.875s
Before 		-106.0 dBm -12.75 dB 1 6a b76a MediumFast 2025-12-15 08:56:58 UTC View
Wake Up, Neo...📡 (NEO) -1.748s
Before 		-102.0 dBm -4.50 dB 2 f5 RPT4 MediumFast 2025-12-15 08:56:58 UTC View
Meshtastic 18a4 (18a4) -1.523s
Before 		-58.0 dBm 12.75 dB 3 60 1760 MediumFast 2025-12-15 08:56:58 UTC View
Meshtastic 1760 (1760) -1.411s
Before 		-117.0 dBm -2.50 dB 2 f5 RPT4 MediumFast 2025-12-15 08:56:58 UTC View
JAGO1_Cañaveral (JAGO) -1.235s
Before 		-121.0 dBm -12.25 dB 2 b0 Vbm , PUPM , Vb2 MediumFast 2025-12-15 08:56:58 UTC View
MakeSpaceMadrid (MKS) -0.679s
Before 		-94.0 dBm 10.25 dB 4 d1 MKS2 MediumFast 2025-12-15 08:56:59 UTC View
Venturada2 🗼🌞 (Vb2) -0.502s
Before 		-87.0 dBm -0.50 dB 1 6a b76a MediumFast 2025-12-15 08:56:59 UTC View
Karabanchel_Baldur (KarB) -0.405s
Before 		-100.0 dBm -5.50 dB 4 90 C181 MediumFast 2025-12-15 08:56:59 UTC View
Fenix (FENX) -0.361s
Before 		-119.0 dBm -13.00 dB 2 61 TO1 MediumFast 2025-12-15 08:56:59 UTC View
P3 iGate 🏠🌐 (P3N2) +1.380s
After 		-38.0 dBm 11.00 dB 3 25 P3N1 MediumFast 2025-12-15 08:57:01 UTC View
Ocumare Norte🗼🌐 (RRN) +1.484s
After 		-108.0 dBm -12.50 dB 2 b0 Vbm , Vb2 MediumFast 2025-12-15 08:57:01 UTC View
XiaoWatt c4c8 🌐🔌 (c4c8) +1.707s
After 		-79.0 dBm 8.00 dB 2 b0 Vbm , Vb2 MediumFast 2025-12-15 08:57:01 UTC View
Quass001 ☄️ (Q001) +2.256s
After 		-50.0 dBm 10.25 dB 3 3a Q005 MediumFast 2025-12-15 08:57:02 UTC View
Quixote_JS8_5🗼🌐 (QXT5) +2.305s
After 		-114.0 dBm -7.25 dB 4 - MediumFast 2025-12-15 08:57:02 UTC View
Eagle’s Nest (EAGL) +2.705s
After 		-102.0 dBm 2.00 dB 3 48 SMR1 MediumFast 2025-12-15 08:57:02 UTC View
Quixote_JS8_7 (QXT7) +3.304s
After 		-18.0 dBm 11.00 dB 4 - MediumFast 2025-12-15 08:57:03 UTC View
Meshtastic b2b4📡🌐 (b2b4) +3.932s
After 		-117.0 dBm -14.50 dB 3 1c 🐷 MediumFast 2025-12-15 08:57:03 UTC View
Skynet (Sky) +5.250s
After 		-79.0 dBm 6.25 dB 3 1c 🐷 MediumFast 2025-12-15 08:57:05 UTC View
Getafe ☀️ (GTF) +5.263s
After 		-119.0 dBm -8.50 dB 3 1c 🐷 MediumFast 2025-12-15 08:57:05 UTC View
tizon (Sylv) +5.267s
After 		-106.0 dBm 0.50 dB 3 1c 🐷 MediumFast 2025-12-15 08:57:05 UTC View
Justicia Meshtastic b0e4 🏢 (b0e4) +5.707s
After 		-115.0 dBm -10.00 dB 4 25 🌇 MediumFast 2025-12-15 08:57:05 UTC View
ETH Maverick (ET01) +7.461s
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