Packet #13875707 Success

NODEINFO_APP packet from Meshtastic 18a4 (18a4) to Sierra norte Madrid ⛰️🗼🌞 (SNM)

3
Total Receptions
3
Unique Gateways
0
Hop Count
80
Payload Bytes
Packet Information
Database ID: 13875707
Mesh Packet ID: 0xf20d2b17
Used for correlation across gateways
Timestamp: 2025-10-06 15:38:54 UTC
From Node: Meshtastic 18a4 (18a4)
To Node: Sierra norte Madrid ⛰️🗼🌞 (SNM)
Success: Processed
Protocol: NODEINFO_APP
Port: 4
Gateway: Meshtastic 18a4 (18a4)
Channel: MediumSlow
RSSI: Unknown
SNR: Unknown
Hop Info: 0/3 hops
Start: 3, Limit: 3
Payload Data
Protocol: NODEINFO_APP
Size: 80 bytes
Decoded: Yes
Decoded Data:
Long Name:Meshtastic 18a4
Short Name:18a4
Node ID:!c0c318a4
MAC Address:/OjAwxik
Hardware:TBEAM
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:80 bytes
Gateway:!c0c318a4
Channel:MediumSlow
Payload Type:NODEINFO_APP
Hop Count:Unknown / 3
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
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !c0c318a4
Node ID format
channel_id MediumSlow
packet MeshPacket (80 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 3234011300
Source node ID 		uint32
to 1129719940
Target node ID 		uint32
decoded.portnum 4
NODEINFO_APP 		enum
decoded.payload_length 80 bytes size
hop_limit 3
Remaining hops allowed 		uint32
hop_start 3
Initial hop limit 		uint32
hops_taken 0
Calculated: hop_start - hop_limit 		derived
rx_rssi Not set int32
rx_snr Not set float
rx_time 1759765207
Receive timestamp 		fixed32
via_mqtt False
Direct LoRa transmission 		bool
want_ack False
No ACK requested 		bool
priority 70
Packet priority level 		enum
delayed Not set enum
channel Not set uint32
pki_encrypted False
Standard encryption 		bool
next_hop Not set uint32
relay_node 164
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1759765134.5632536
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: MediumSlow
  • ✓ Gateway node ID tracked
  • ✓ Zero-hop: direct from source to MQTT gateway
Exposure Risks:
  • ⚠ Packet visible to MQTT subscribers
MQTT-Specific Fields
Gateway ID: !c0c318a4
Zero Hop Policy: Enabled
Direct gateway connection
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:NODEINFO_APP
Size:80 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "id": "!c0c318a4", "long_name": "Meshtastic 18a4", "short_name": "18a4", "macaddr": "/OjAwxik", "hw_model": "TBEAM" }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!c0c318a4", "channel_id": "MediumSlow", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3234011300, "to": 1129719940, "id": 4060949271, "rx_time": 1759765207, "rx_snr": 0.0, "rx_rssi": 0, "hop_limit": 3, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 70, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 164, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216330633331386134120f4d65736874617374696320313861341a04313861342206fce8c0c318a42804422032d67df18582a104be031320434c7559c50d34472ce7e89f9305d5bdab36812c4800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!c0c318a4", "long_name": "Meshtastic 18a4", "short_name": "18a4", "macaddr": "/OjAwxik", "hw_model": "TBEAM", "public_key": "MtZ98YWCoQS+AxMgQ0x1WcUNNEcs5+ifkwXVvas2gSw=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }
Raw Packet Data (80 bytes)
0a09216330633331386134120f4d65736874617374696320313861341a04313861342206fce8c0c318a42804422032d67df18582a104be031320434c7559c50d34472ce7e89f9305d5bdab36812c4800
Hex Analysis:
Size:80 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
Meshtastic 18a4 (18a4) Primary 0.000s
Reference 		Unknown Unknown 0 MediumSlow 2025-10-06 15:38:54 Current
Meshtastic 1760 (1760) +2.496s
After 		-54.0 dBm 13.25 dB 0 MediumSlow 2025-10-06 15:38:57 View
Kenobi23 QTH (5aec) +2.948s
After 		-87.0 dBm 4.25 dB 1 MediumSlow 2025-10-06 15:38:57 View
3

Total Receptions

3

Unique Gateways