Packet #12331671 Success

NODEINFO_APP packet from SPA3NF-BASE (SPAX) to Montjuic a4f8 (a4f8)

12
Total Receptions
12
Unique Gateways
3
Hop Count
77
Payload Bytes
Packet Information
Database ID: 12331671
Mesh Packet ID: 0x827b0e34
Used for correlation across gateways
Timestamp: 2025-09-26 21:38:59 UTC
From Node: SPA3NF-BASE (SPAX)
To Node: Montjuic a4f8 (a4f8)
Success: Processed
Protocol: NODEINFO_APP
Port: 4
Gateway: Mhydhesh (MHYD)
Channel: LongFast
RSSI: -124 dBm
SNR: -12.0 dBm
Hop Info: 3/3 hops
Start: 3, Limit: 0
Payload Data
Protocol: NODEINFO_APP
Size: 77 bytes
Decoded: Yes
Decoded Data:
Long Name:SPA3NF-BASE
Short Name:3c18
Node ID:!582f3c18
MAC Address:6+xYLzwY
Hardware:PRIVATE_HW
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:77 bytes
Gateway:!b03c5588
Channel:LongFast
Payload Type:NODEINFO_APP
Hop Count:3 / 3
Privacy Summary
Exposure Level:
Direct Message
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 1 more...
Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 2 more...
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !b03c5588
Node ID format
channel_id LongFast
Default public channel
packet MeshPacket (77 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 1479490584
Source node ID 		uint32
to 14132472
Target node ID 		uint32
decoded.portnum 4
NODEINFO_APP 		enum
decoded.payload_length 77 bytes size
hop_limit Not set uint32
hop_start 3
Initial hop limit 		uint32
hops_taken 3
Calculated: hop_start - hop_limit 		derived
rx_rssi -124.0 dBm
Signal strength at gateway 		int32
rx_snr -12.00 dB
Signal quality at gateway 		float
rx_time 1758922739
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 2
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1758922739.8233316
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
  • ✓ Gateway node ID tracked
Exposure Risks:
  • ⚠ Default channel - no encryption
  • ⚠ Packet visible to MQTT subscribers
  • ⚠ Multi-hop path visible (3 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !b03c5588
Signal Metrics: RSSI: -124.0 dBm
SNR: -12.00 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:NODEINFO_APP
Size:77 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "id": "!582f3c18", "long_name": "SPA3NF-BASE", "short_name": "3c18", "macaddr": "6+xYLzwY", "hw_model": "PRIVATE_HW" }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!b03c5588", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1479490584, "to": 14132472, "id": 2189102644, "rx_time": 1758922739, "rx_snr": -12.0, "rx_rssi": -124, "hop_limit": 0, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 2, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09213538326633633138120b535041334e462d424153451a04336331382206ebec582f3c1828ff014220082fa44279f263eaa07f65af90da46c2462766a8a5a44d9a24c355539630ab3c4800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!582f3c18", "long_name": "SPA3NF-BASE", "short_name": "3c18", "macaddr": "6+xYLzwY", "hw_model": "PRIVATE_HW", "public_key": "CC+kQnnyY+qgf2WvkNpGwkYnZqilpE2aJMNVU5Ywqzw=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }
Raw Packet Data (77 bytes)
0a09213538326633633138120b535041334e462d424153451a04336331382206ebec582f3c1828ff014220082fa44279f263eaa07f65af90da46c2462766a8a5a44d9a24c355539630ab3c4800
Hex Analysis:
Size:77 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 Channel Timestamp Actions
Mhydhesh (MHYD) Primary 0.000s
Reference 		-124.0 dBm -12.00 dB 3 LongFast 2025-09-26 21:38:59 Current
MontcadaCentro-CL-868🗼🌐 (d9e8) -6.700s
Before 		-87.0 dBm 6.25 dB 0 LongFast 2025-09-26 21:38:53 View
RAFA Helios ☀ (RHEL) -6.561s
Before 		-120.0 dBm -15.50 dB 0 LongFast 2025-09-26 21:38:53 View
CODY-ConcaDeTremp-GW-868 (CODY) -4.173s
Before 		-126.0 dBm -14.75 dB 1 LongFast 2025-09-26 21:38:55 View
RAFA Hermes 🛰️ (RHER) -3.852s
Before 		-59.0 dBm 5.50 dB 1 LongFast 2025-09-26 21:38:55 View
Rubí - FCS (FCS) -0.862s
Before 		-126.0 dBm -15.00 dB 3 LongFast 2025-09-26 21:38:58 View
X1 Portable Station (X1) +3.090s
After 		-116.0 dBm -7.25 dB 1 LongFast 2025-09-26 21:39:02 View
CV-Oriol-GW-8 📡 (CVO2) +3.435s
After 		-101.0 dBm 5.25 dB 2 LongFast 2025-09-26 21:39:03 View
g0maintt (g0mq) +3.809s
After 		-77.0 dBm 5.75 dB 3 LongFast 2025-09-26 21:39:03 View
EB3FWC-Girona📡-GW-868 (EB3F) +4.097s
After 		-89.0 dBm -2.50 dB 2 LongFast 2025-09-26 21:39:03 View
🇮🇨nomada81🇪🇸 (YETi) +4.148s
After 		-110.0 dBm -17.50 dB 2 LongFast 2025-09-26 21:39:03 View
Angel GW-8 (🏠) +6.852s
After 		-128.0 dBm -19.50 dB 3 LongFast 2025-09-26 21:39:06 View
12

Total Receptions

12

Unique Gateways