Packet #27781237 Success

POSITION_APP packet from Hortaleza_Carcavas☀️🗼 (RPT6) to Sierra norte Madrid ⛰️🗼🌞 (SNM)

18
Total Receptions
18
Unique Gateways
4
Hop Count
17
Payload Bytes
Packet Information
Database ID: 27781237
Mesh Packet ID: 0xedf24d56
Used for correlation across gateways
Timestamp: 2025-12-15 08:35:17 UTC
From Node: Hortaleza_Carcavas☀️🗼 (RPT6)
To Node: Sierra norte Madrid ⛰️🗼🌞 (SNM)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: PXT_Home (PXT1)
Channel: MediumFast
RSSI: -107 dBm
SNR: -2.0 dBm
Hop Info: 4/4 hops
Start: 4, Limit: 0
Relay Node: 11 BAS1
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: 17 bytes
Decoded: Yes
Decoded Data:
Latitude:40.473395°
Longitude:-3.629056°
Precision:17 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:17 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
+ 2 more...
Exposure Risks:
⚠ Packet visible to MQTT subscribers
⚠ Full GPS precision shared
+ 2 more...
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !849b5278
Node ID format
channel_id MediumFast
packet MeshPacket (17 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 3240513092
Source node ID 		uint32
to 1129719940
Target node ID 		uint32
decoded.portnum 3
POSITION_APP 		enum
decoded.payload_length 17 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 -107.0 dBm
Signal strength at gateway 		int32
rx_snr -2.00 dB
Signal quality at gateway 		float
rx_time 1765787716
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 17
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1765787717.2375963
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
Exposure Risks:
  • ⚠ Packet visible to MQTT subscribers
  • ⚠ Full GPS precision shared
  • ⚠ Multi-hop path visible (4 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !849b5278
Position Precision: 17 bits (~182.0m accuracy)
Position precision meters: 182.0
Signal Metrics: RSSI: -107.0 dBm
SNR: -2.00 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:POSITION_APP
Size:17 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "latitude": 40.4733952, "longitude": -3.629056, "altitude": null, "sats_in_view": null, "precision_bits": 17 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!849b5278", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3240513092, "to": 1129719940, "id": 3992079702, "rx_time": 1765787716, "rx_snr": -2.0, "rx_rssi": -107, "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": 17, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00c01f18150040d6fd28014800b80111", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 404733952, "longitude_i": -36290560, "location_source": "LOC_MANUAL", "altitude_hae": 0, "precision_bits": 17, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (17 bytes)
0d00c01f18150040d6fd28014800b80111
Hex Analysis:
Size:17 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 		-107.0 dBm -2.00 dB 4 11 BAS1 MediumFast 2025-12-15 08:35:17 UTC Current
XiaoWatt c4c8 🌐🔌 (c4c8) -20.386s
Before 		-100.0 dBm -10.75 dB 0 44 RPT6 MediumFast 2025-12-15 08:34:56 UTC View
Venturada2 🗼🌞 (Vb2) -3.883s
Before 		-96.0 dBm Unknown 1 c8 c4c8 MediumFast 2025-12-15 08:35:13 UTC View
JAGO1_Cañaveral (JAGO) -3.157s
Before 		-122.0 dBm -13.50 dB 2 b0 Vbm , PUPM , Vb2 MediumFast 2025-12-15 08:35:14 UTC View
NodeJPL6 (JPL6) -3.087s
Before 		-99.0 dBm -10.50 dB 2 b0 Vb2 MediumFast 2025-12-15 08:35:14 UTC View
GRN1-Base🗼🌐 🔋 (GRN1) -2.847s
Before 		-96.0 dBm 1.50 dB 2 b0 Vbm , Vb2 MediumFast 2025-12-15 08:35:14 UTC View
Rodashtastic🗼🌐 (RDSt) -1.920s
Before 		-115.0 dBm -6.50 dB 3 e8 GRN1 MediumFast 2025-12-15 08:35:15 UTC View
🎄 SkG@Home 📡🌐 (SkGH) -1.611s
Before 		-98.0 dBm -10.50 dB 3 ac MediumFast 2025-12-15 08:35:15 UTC View
ETH Maverick (ET01) -1.113s
Before 		-107.0 dBm -5.75 dB 2 61 TO1 MediumFast 2025-12-15 08:35:16 UTC View
Fenix (FENX) -1.047s
Before 		-120.0 dBm -13.00 dB 2 61 TO1 MediumFast 2025-12-15 08:35:16 UTC View
Quass001 ☄️ (Q001) -0.966s
Before 		-51.0 dBm 11.25 dB 4 3a Q005 MediumFast 2025-12-15 08:35:16 UTC View
Zion 🗼 (Zion) +0.024s
After 		-110.0 dBm -12.75 dB 4 11 BAS1 MediumFast 2025-12-15 08:35:17 UTC View
Quixote_JS8_5🗼🌐 (QXT5) +0.372s
After 		-114.0 dBm -8.75 dB 4 - MediumFast 2025-12-15 08:35:17 UTC View
Quixote_JS8_7 (QXT7) +0.375s
After 		-18.0 dBm 10.75 dB 4 - MediumFast 2025-12-15 08:35:17 UTC View
Eagle’s Nest (EAGL) +0.447s
After 		-101.0 dBm 6.25 dB 3 48 SMR1 MediumFast 2025-12-15 08:35:17 UTC View
Varela Bot 🏡🤖 (🤖) +0.465s
After 		-76.0 dBm 10.25 dB 3 1c 🏡 MediumFast 2025-12-15 08:35:17 UTC View
ETH Goose (ET03) +0.869s
After 		-28.0 dBm 11.25 dB 3 41 ET01 MediumFast 2025-12-15 08:35:18 UTC View
Justicia Meshtastic b0e4 🏢 (b0e4) +1.406s
After 		-117.0 dBm -9.25 dB 4 25 🌇 MediumFast 2025-12-15 08:35:18 UTC View
18

Total Receptions

18

Unique Gateways