Packet #12341492 Success

NODEINFO_APP packet from SPA3NF-BASE (SPAX) to Meshtastic 3800 (3800)

8
Total Receptions
8
Unique Gateways
2
Hop Count
77
Payload Bytes
Packet Information
Database ID: 12341492
Mesh Packet ID: 0xf8d3fa75
Used for correlation across gateways
Timestamp: 2025-09-26 22:47:31 UTC
From Node: SPA3NF-BASE (SPAX)
To Node: Meshtastic 3800 (3800)
Success: Processed
Protocol: NODEINFO_APP
Port: 4
Gateway: X1 Portable Station (X1)
Channel: LongFast
RSSI: -117 dBm
SNR: -9.75 dBm
Hop Info: 2/3 hops
Start: 3, Limit: 1
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:!9e9f22e0
Channel:LongFast
Payload Type:NODEINFO_APP
Hop Count:2 / 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 !9e9f22e0
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 2224830464
Target node ID 		uint32
decoded.portnum 4
NODEINFO_APP 		enum
decoded.payload_length 77 bytes size
hop_limit 1
Remaining hops allowed 		uint32
hop_start 3
Initial hop limit 		uint32
hops_taken 2
Calculated: hop_start - hop_limit 		derived
rx_rssi -117.0 dBm
Signal strength at gateway 		int32
rx_snr -9.75 dB
Signal quality at gateway 		float
rx_time 1758926844
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 Not set uint32
tx_after Not set uint32
timestamp 1758926851.832966
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 (2 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !9e9f22e0
Signal Metrics: RSSI: -117.0 dBm
SNR: -9.75 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": "!9e9f22e0", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1479490584, "to": 2224830464, "id": 4174641781, "rx_time": 1758926844, "rx_snr": -9.75, "rx_rssi": -117, "hop_limit": 1, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 0, "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
X1 Portable Station (X1) Primary 0.000s
Reference 		-117.0 dBm -9.75 dB 2 LongFast 2025-09-26 22:47:31 Current
MontcadaCentro-CL-868🗼🌐 (d9e8) -12.047s
Before 		-85.0 dBm 5.50 dB 0 LongFast 2025-09-26 22:47:19 View
RAFA Helios ☀ (RHEL) -10.219s
Before 		-102.0 dBm 1.75 dB 1 LongFast 2025-09-26 22:47:21 View
Mhydhesh (MHYD) -5.905s
Before 		-119.0 dBm -7.00 dB 3 LongFast 2025-09-26 22:47:25 View
CV-Oriol-GW-8 📡 (CVO2) -5.508s
Before 		-102.0 dBm 4.75 dB 3 LongFast 2025-09-26 22:47:26 View
🇮🇨nomada81🇪🇸 (YETi) -3.371s
Before 		-111.0 dBm -18.00 dB 3 LongFast 2025-09-26 22:47:28 View
EB3FWC-Girona📡-GW-868 (EB3F) -3.364s
Before 		-88.0 dBm 3.25 dB 3 LongFast 2025-09-26 22:47:28 View
Rubí - FCS (FCS) -1.474s
Before 		-116.0 dBm -6.00 dB 3 LongFast 2025-09-26 22:47:30 View
8

Total Receptions

8

Unique Gateways