Packet #28370565 Success

NODEINFO_APP packet from ljCR1 QTH = IM88ax77 (lCR1) to Meshtastic dbbc (dbbc)

10
Total Receptions
10
Unique Gateways
3
Hop Count
68
Payload Bytes
Packet Information
Database ID: 28370565
Mesh Packet ID: 0xac376c7f
Used for correlation across gateways
Timestamp: 2025-12-18 00:06:43 UTC
From Node: ljCR1 QTH = IM88ax77 (lCR1)
To Node: Meshtastic dbbc (dbbc)
Success: Processed
Protocol: NODEINFO_APP
Port: 4
Gateway: Meshtastic b2b4📡🌐 (b2b4)
Channel: MediumFast
RSSI: -107 dBm
SNR: -6.0 dBm
Hop Info: 3/3 hops
Start: 3, Limit: 0
Relay Node: 2d SkyB
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: 68 bytes
Decoded: Yes
Decoded Data:
Long Name:ljCR1
Short Name:lCR1
Node ID:!db518568
MAC Address:EFHbUYVo
Hardware:HELTEC_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:68 bytes
Gateway:!433db2b4
Channel:MediumFast
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
+ 2 more...
Exposure Risks:
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (3 hops)
+ 1 more...
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !433db2b4
Node ID format
channel_id MediumFast
packet MeshPacket (68 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 3679552872
Source node ID 		uint32
to 2661538748
Target node ID 		uint32
decoded.portnum 4
NODEINFO_APP 		enum
decoded.payload_length 68 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 -107.0 dBm
Signal strength at gateway 		int32
rx_snr -6.00 dB
Signal quality at gateway 		float
rx_time 1766016401
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 45
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1766016403.8341799
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 (3 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !433db2b4
Signal Metrics: RSSI: -107.0 dBm
SNR: -6.00 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:NODEINFO_APP
Size:68 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "id": "!db518568", "long_name": "ljCR1", "short_name": "lCR1", "macaddr": "EFHbUYVo", "hw_model": "HELTEC_V3" }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!433db2b4", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3679552872, "to": 2661538748, "id": 2889313407, "rx_time": 1766016401, "rx_snr": -6.0, "rx_rssi": -107, "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": 45, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921646235313835363812056c6a4352311a046c43523122061051db518568282b422090f3f733c5c69519d5e8899f0e72287cdc26cf9ed02670443286441b3d93ee52", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!db518568", "long_name": "ljCR1", "short_name": "lCR1", "macaddr": "EFHbUYVo", "hw_model": "HELTEC_V3", "public_key": "kPP3M8XGlRnV6ImfDnIofNwmz57QJnBEMoZEGz2T7lI=", "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }
Raw Packet Data (68 bytes)
0a0921646235313835363812056c6a4352311a046c43523122061051db518568282b422090f3f733c5c69519d5e8899f0e72287cdc26cf9ed02670443286441b3d93ee52
Hex Analysis:
Size:68 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
Meshtastic b2b4📡🌐 (b2b4) Primary 0.000s
Reference 		-107.0 dBm -6.00 dB 3 2d SkyB MediumFast 2025-12-18 00:06:43 UTC Current
ljCR1 QTH = IM88ax77 (lCR1) -5.977s
Before 		Unknown Unknown 0 68 lCR1 MediumFast 2025-12-18 00:06:37 UTC View
Villarejo01 (VIL1) -1.351s
Before 		-119.0 dBm -15.00 dB 2 61 TO1 MediumFast 2025-12-18 00:06:42 UTC View
P3 iGate 🏠🌐 (P3N2) +0.250s
After 		-37.0 dBm 11.00 dB 3 25 P3N1 MediumFast 2025-12-18 00:06:44 UTC View
🤖 Nicolas Cage 🌐 (Cage) +0.283s
After 		-64.0 dBm 11.50 dB 3 2d SkyB MediumFast 2025-12-18 00:06:44 UTC View
Karabanchel_Baldur (KarB) +0.308s
After 		-90.0 dBm 5.50 dB 3 2d SkyB MediumFast 2025-12-18 00:06:44 UTC View
ETH Maverick (ET01) +0.688s
After 		-106.0 dBm -10.25 dB 2 61 TO1 MediumFast 2025-12-18 00:06:44 UTC View
Eagle’s Nest (EAGL) +1.251s
After 		-115.0 dBm -4.50 dB 3 74 MediumFast 2025-12-18 00:06:45 UTC View
Meshtastic 26b0 (26b0) +1.315s
After 		-97.0 dBm -3.50 dB 3 b4 Alk MediumFast 2025-12-18 00:06:45 UTC View
Varela Bot 🏡🤖 (🤖) +1.403s
After 		-85.0 dBm 8.25 dB 3 1c 🏡 MediumFast 2025-12-18 00:06:45 UTC View
10

Total Receptions

10

Unique Gateways