Packet #10042479 Success

NODEINFO_APP packet from Sierra norte Madrid ⛰️🗼🌞 (SNM) to EA4LS QTH (4LS1)

18
Total Receptions
18
Unique Gateways
2
Hop Count
98
Payload Bytes
Packet Information
Database ID: 10042479
Mesh Packet ID: 0x4e5a0c54
Used for correlation across gateways
Timestamp: 2025-09-11 00:39:45 UTC
From Node: Sierra norte Madrid ⛰️🗼🌞 (SNM)
To Node: EA4LS QTH (4LS1)
Success: Processed
Protocol: NODEINFO_APP
Port: 4
Gateway: Machu Pichu (MaPi)
Channel: MediumSlow
RSSI: -97 dBm
SNR: 1.5 dBm
Hop Info: 2/4 hops
Start: 4, Limit: 2
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:!9eeb1e24
Channel:MediumSlow
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 !9eeb1e24
Node ID format
channel_id MediumSlow
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 3127200688
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 -97.0 dBm
Signal strength at gateway 		int32
rx_snr 1.50 dB
Signal quality at gateway 		float
rx_time 1757551184
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 8
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1757551185.8981206
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
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: !9eeb1e24
Signal Metrics: RSSI: -97.0 dBm
SNR: 1.50 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": "!9eeb1e24", "channel_id": "MediumSlow", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1129719940, "to": 3127200688, "id": 1314524244, "rx_time": 1757551184, "rx_snr": 1.5, "rx_rssi": -97, "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": 8, "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 Channel Timestamp Actions
Machu Pichu (MaPi) Primary 0.000s
Reference 		-97.0 dBm 1.50 dB 2 MediumSlow 2025-09-11 00:39:45 Current
Venturada base🗼🌐 (Vb) -4.958s
Before 		-116.0 dBm -6.75 dB 0 MediumSlow 2025-09-11 00:39:40 View
Tlgo 📡🌐🔋🔌 (TLG0) -4.936s
Before 		-111.0 dBm -2.25 dB 0 MediumSlow 2025-09-11 00:39:40 View
GRN1-Base🗼🌐 (GRN1) -4.927s
Before 		-110.0 dBm -1.00 dB 0 MediumSlow 2025-09-11 00:39:40 View
Perseo 🗼🌐 (nvm1) -3.887s
Before 		-108.0 dBm -12.50 dB 1 MediumSlow 2025-09-11 00:39:42 View
Venturada2🗼🌐☀️ (Vb2) -2.493s
Before 		-79.0 dBm 6.50 dB 1 MediumSlow 2025-09-11 00:39:43 View
SkG@Somewhere 🤨 (SkGs) -2.262s
Before 		-122.0 dBm -16.00 dB 1 MediumSlow 2025-09-11 00:39:43 View
@lazynoda cocidito 🥵 🗼🌐 (LNCM) -0.724s
Before 		-111.0 dBm 0.75 dB 2 MediumSlow 2025-09-11 00:39:45 View
Will - Azuqueca (WAzq) -0.265s
Before 		-110.0 dBm -8.00 dB 2 MediumSlow 2025-09-11 00:39:45 View
Ocumare_Base_🗼🌐 (CATA) -0.109s
Before 		-93.0 dBm 2.00 dB 2 MediumSlow 2025-09-11 00:39:45 View
Meshtastic c498📡🌐 (C498) -0.010s
Before 		-119.0 dBm -14.00 dB 2 MediumSlow 2025-09-11 00:39:45 View
Meshtastic fbec (fbec) +0.618s
After 		-125.0 dBm -5.50 dB 2 MediumSlow 2025-09-11 00:39:46 View
🌐Byg Boy 81 Movil🛰 (MT46) +1.295s
After 		-105.0 dBm 2.50 dB 3 MediumSlow 2025-09-11 00:39:47 View
Zion 🗼 (Zion) +1.350s
After 		-104.0 dBm -3.50 dB 3 MediumSlow 2025-09-11 00:39:47 View
Villalbilla02 (VBV2) +2.096s
After 		-105.0 dBm 3.50 dB 2 MediumSlow 2025-09-11 00:39:47 View
Meshtastic 53fc (53fc) +4.382s
After 		-115.0 dBm -5.00 dB 3 MediumSlow 2025-09-11 00:39:50 View
MeshPrepper (MP) +5.045s
After 		-120.0 dBm -12.75 dB 3 MediumSlow 2025-09-11 00:39:50 View
Mec Rocket Meco (MRM) +7.786s
After 		-100.0 dBm -0.25 dB 3 MediumSlow 2025-09-11 00:39:53 View
18

Total Receptions

18

Unique Gateways