Packet #28298289 Success

NODEINFO_APP packet from ljCR2 (lCR2) to !ffffffff

1
Total Receptions
1
Unique Gateways
2
Hop Count
70
Payload Bytes
Packet Information
Database ID: 28298289
Mesh Packet ID: 0x8cb857a4
Used for correlation across gateways
Timestamp: 2025-12-17 16:24:03 UTC
From Node: ljCR2 (lCR2)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: NODEINFO_APP
Port: 4
Gateway: MOVIL 1 🟢 MANCHASTIC (MV1V)
Channel: MediumFast
RSSI: -66 dBm
SNR: 10.75 dBm
Hop Info: 2/3 hops
Start: 3, Limit: 1
Relay Node: b4
Last byte of the last hop that relayed this packet
Payload Data
Protocol: NODEINFO_APP
Size: 70 bytes
Decoded: Yes
Decoded Data:
Long Name:ljCR2
Short Name:lCR2
Node ID:!f9ea17f2
MAC Address:z2H56hfy
Hardware:NRF52_PROMICRO_DIY
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:70 bytes
Gateway:!38367c7a
Channel:MediumFast
Payload Type:NODEINFO_APP
Hop Count:2 / 3
Privacy Summary
Exposure Level:
Broadcast
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: MediumFast
+ 1 more...
Exposure Risks:
âš  Visible to all nodes on channel
âš  Packet visible to MQTT subscribers
+ 2 more...
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !38367c7a
Node ID format
channel_id MediumFast
packet MeshPacket (70 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 4192868338
Source node ID 		uint32
to 4294967295 (Broadcast)
Visible to all nodes 		uint32
decoded.portnum 4
NODEINFO_APP 		enum
decoded.payload_length 70 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 -66.0 dBm
Signal strength at gateway 		int32
rx_snr 10.75 dB
Signal quality at gateway 		float
rx_time 1765988631
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 180
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1765988643.7388105
Unix timestamp 		uint32
MQTT Privacy & Exposure Analysis

Analysis of privacy features and exposure risks when packet is shared via MQTT

Exposure Level: Broadcast
Privacy Features:
  • ✓ Direct LoRa transmission (not via MQTT)
  • ✓ Custom channel: MediumFast
  • ✓ Gateway node ID tracked
Exposure Risks:
  • âš  Visible to all nodes on channel
  • âš  Packet visible to MQTT subscribers
  • âš  Multi-hop path visible (2 hops)
  • âš  RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !38367c7a
Signal Metrics: RSSI: -66.0 dBm
SNR: 10.75 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:NODEINFO_APP
Size:70 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "id": "!f9ea17f2", "long_name": "ljCR2", "short_name": "lCR2", "macaddr": "z2H56hfy", "hw_model": "NRF52_PROMICRO_DIY" }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!38367c7a", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 4192868338, "to": 4294967295, "id": 2360891300, "rx_time": 1765988631, "rx_snr": 10.75, "rx_rssi": -66, "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": 180, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a0921663965613137663212056c6a4352321a046c4352322206cf61f9ea17f2283f4220e807b6ebabcebe6b8099368b332d7e3609ddf6d9082b522a9bf41f630ed545174800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!f9ea17f2", "long_name": "ljCR2", "short_name": "lCR2", "macaddr": "z2H56hfy", "hw_model": "NRF52_PROMICRO_DIY", "public_key": "6Ae266vOvmuAmTaLMy1+Ngnd9tkIK1Iqm/QfYw7VRRc=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }
Raw Packet Data (70 bytes)
0a0921663965613137663212056c6a4352321a046c4352322206cf61f9ea17f2283f4220e807b6ebabcebe6b8099368b332d7e3609ddf6d9082b522a9bf41f630ed545174800
Hex Analysis:
Size:70 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
Gateway Time Offset RSSI SNR Hops Relay Channel Timestamp Actions
MOVIL 1 🟢 MANCHASTIC (MV1V) Primary 0.000s
Reference 		-66.0 dBm 10.75 dB 2 b4 MediumFast 2025-12-17 16:24:03 UTC Current
No other receptions found within ±2 seconds
1

Total Receptions

1

Unique Gateways