Packet #28512255 Success

NODEINFO_APP packet from Sierra norte Madrid ⛰️🗼🌞 (SNM) to PXT_Go (PXT2)

14
Total Receptions
14
Unique Gateways
2
Hop Count
98
Payload Bytes
Packet Information
Database ID: 28512255
Mesh Packet ID: 0x75c673a2
Used for correlation across gateways
Timestamp: 2025-12-18 17:19:54 UTC
From Node: Sierra norte Madrid ⛰️🗼🌞 (SNM)
To Node: PXT_Go (PXT2)
Success: Processed
Protocol: NODEINFO_APP
Port: 4
Gateway: Justicia Meshtastic b0e4 🏢 (b0e4)
Channel: MediumFast
RSSI: -118 dBm
SNR: -12.25 dBm
Hop Info: 2/4 hops
Start: 4, Limit: 2
Relay Node: 25 🌇
Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions
Payload Data
Protocol: NODEINFO_APP
Size: 98 bytes
Decoded: Yes
Decoded Data:
Long Name:Sierra norte Madrid ⛰️🗼🌞
Short Name:SNM
Node ID:!43562884
MAC Address:SMpDViiE
Hardware:HELTEC_WSL_V3
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:98 bytes
Gateway:!9ea1b0e4
Channel:MediumFast
Payload Type:NODEINFO_APP
Hop Count:2 / 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
⚠ Multi-hop path visible (2 hops)
+ 1 more...
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !9ea1b0e4
Node ID format
channel_id MediumFast
packet MeshPacket (98 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 1129719940
Source node ID 		uint32
to 2983370718
Target node ID 		uint32
decoded.portnum 4
NODEINFO_APP 		enum
decoded.payload_length 98 bytes size
hop_limit 2
Remaining hops allowed 		uint32
hop_start 4
Initial hop limit 		uint32
hops_taken 2
Calculated: hop_start - hop_limit 		derived
rx_rssi -118.0 dBm
Signal strength at gateway 		int32
rx_snr -12.25 dB
Signal quality at gateway 		float
rx_time 1766078393
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 37
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1766078394.667031
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
  • ⚠ Multi-hop path visible (2 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !9ea1b0e4
Signal Metrics: RSSI: -118.0 dBm
SNR: -12.25 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:NODEINFO_APP
Size:98 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "id": "!43562884", "long_name": "Sierra norte Madrid ⛰️🗼🌞", "short_name": "SNM", "macaddr": "SMpDViiE", "hw_model": "HELTEC_WSL_V3" }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!9ea1b0e4", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1129719940, "to": 2983370718, "id": 1975940002, "rx_time": 1766078393, "rx_snr": -12.25, "rx_rssi": -118, "hop_limit": 2, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 37, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a092134333536323838341222536965727261206e6f727465204d616472696420e29bb0efb88ff09f97bcf09f8c9e1a03534e4d220648ca43562884282c380242207e52862e72b32f44af42b528084eefaa0bee58c0c7cbf44107a3ced8bae4c945", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!43562884", "long_name": "Sierra norte Madrid ⛰️🗼🌞", "short_name": "SNM", "macaddr": "SMpDViiE", "hw_model": "HELTEC_WSL_V3", "role": "ROUTER", "public_key": "flKGLnKzL0SvQrUoCE7vqgvuWMDHy/RBB6PO2LrkyUU=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }
Raw Packet Data (98 bytes)
0a092134333536323838341222536965727261206e6f727465204d616472696420e29bb0efb88ff09f97bcf09f8c9e1a03534e4d220648ca43562884282c380242207e52862e72b32f44af42b528084eefaa0bee58c0c7cbf44107a3ced8bae4c945
Hex Analysis:
Size:98 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
Justicia Meshtastic b0e4 🏢 (b0e4) Primary 0.000s
Reference 		-118.0 dBm -12.25 dB 2 25 🌇 MediumFast 2025-12-18 17:19:54 UTC Current
[samsepi0l] 📡🌐 (tlg0) -4.209s
Before 		-96.0 dBm -1.75 dB 0 - MediumFast 2025-12-18 17:19:50 UTC View
JAGO1_Cañaveral (JAGO) -3.763s
Before 		-115.0 dBm -6.25 dB 1 38 tlg0 MediumFast 2025-12-18 17:19:50 UTC View
Karabanchel_Baldur (KarB) -3.217s
Before 		-93.0 dBm -0.75 dB 1 1c 🐷 MediumFast 2025-12-18 17:19:51 UTC View
🤖 Nicolas Cage 🌐 (Cage) -2.991s
Before 		-95.0 dBm 9.75 dB 1 1c 🐷 MediumFast 2025-12-18 17:19:51 UTC View
Getafe ☀️ (GTF) -2.901s
Before 		-122.0 dBm -13.25 dB 1 1c 🐷 MediumFast 2025-12-18 17:19:51 UTC View
tizon (Sylv) -2.889s
Before 		-104.0 dBm 3.75 dB 1 1c 🐷 MediumFast 2025-12-18 17:19:51 UTC View
ETH Goose (ET03) -2.528s
Before 		-118.0 dBm -14.00 dB 2 72 Knb1 MediumFast 2025-12-18 17:19:52 UTC View
GRN1-Base🗼🌐 🔋 (GRN1) -2.142s
Before 		-106.0 dBm -8.50 dB 0 - MediumFast 2025-12-18 17:19:52 UTC View
Ocumare Norte🗼🌐 (RRN) -2.127s
Before 		-109.0 dBm -14.75 dB 3 0c e80c MediumFast 2025-12-18 17:19:52 UTC View
Varela Bot 🏡🤖 (🤖) -1.928s
Before 		-85.0 dBm 6.75 dB 1 1c 🏡 MediumFast 2025-12-18 17:19:52 UTC View
Quass001 ☄️ (Q001) -1.572s
Before 		-49.0 dBm 10.75 dB 2 3a Q005 MediumFast 2025-12-18 17:19:53 UTC View
Mec Rocket Meco (MRM) -0.949s
Before 		-113.0 dBm -14.50 dB 4 08 JPL2 MediumFast 2025-12-18 17:19:53 UTC View
Eagle’s Nest (EAGL) +1.638s
After 		-106.0 dBm 3.00 dB 2 a4 Raq1 MediumFast 2025-12-18 17:19:56 UTC View
14

Total Receptions

14

Unique Gateways