Packet #17226 Success

NODEINFO_APP packet from Meshtastic Cray (Cray) to Ex Machina Parlor (EMP)

1
Total Receptions
1
Unique Gateways
2
Hop Count
80
Payload Bytes
Packet Information
Database ID: 17226
Mesh Packet ID: 0x92b62720
Used for correlation across gateways
Timestamp: 2026-03-15 05:32:10 UTC
From Node: Meshtastic Cray (Cray)
To Node: Ex Machina Parlor (EMP)
Success: Processed
Protocol: NODEINFO_APP
Port: 4
Gateway: Bryn Mawr Base (BRYN)
Channel: LongFast
RSSI: -71 dBm
SNR: 6.0 dBm
Hop Info: 2/3 hops
Start: 3, Limit: 1
Relay Node: 94 2N39 , BM-
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: 80 bytes
Decoded: Yes
Decoded Data:
Long Name:Meshtastic Cray
Short Name:Cray
Node ID:!ba6a6884
MAC Address:ECC6amiE
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:80 bytes
Gateway:!16ced548
Channel:LongFast
Payload Type:NODEINFO_APP
Hop Count:2 / 3
Privacy Summary
Exposure Level:
Direct Message
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 1 more...
Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 2 more...
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !16ced548
Node ID format
channel_id LongFast
Default public channel
packet MeshPacket (80 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 3127535748
Source node ID 		uint32
to 3755619013
Target node ID 		uint32
decoded.portnum 4
NODEINFO_APP 		enum
decoded.payload_length 80 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 -71.0 dBm
Signal strength at gateway 		int32
rx_snr 6.00 dB
Signal quality at gateway 		float
rx_time 1773552729
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 148
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1773552730.9287503
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
  • ✓ Gateway node ID tracked
Exposure Risks:
  • ⚠ Default channel - no encryption
  • ⚠ Packet visible to MQTT subscribers
  • ⚠ Multi-hop path visible (2 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !16ced548
Signal Metrics: RSSI: -71.0 dBm
SNR: 6.00 dB
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": "!ba6a6884", "long_name": "Meshtastic Cray", "short_name": "Cray", "macaddr": "ECC6amiE", "hw_model": "HELTEC_V3" }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!16ced548", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3127535748, "to": 3755619013, "id": 2461411104, "rx_time": 1773552729, "rx_snr": 6.0, "rx_rssi": -71, "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": 148, "tx_after": 0, "decoded": { "portnum": 4, "payload": "0a09216261366136383834120f4d65736874617374696320437261791a044372617922061020ba6a6884282b42202bd7f9cc81219ae1cd0a4ac2f8633cfdfb020aa66cf265e7d561572668b9bf494800", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "id": "!ba6a6884", "long_name": "Meshtastic Cray", "short_name": "Cray", "macaddr": "ECC6amiE", "hw_model": "HELTEC_V3", "public_key": "K9f5zIEhmuHNCkrC+GM8/fsCCqZs8mXn1WFXJmi5v0k=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } } } }
Raw Packet Data (80 bytes)
0a09216261366136383834120f4d65736874617374696320437261791a044372617922061020ba6a6884282b42202bd7f9cc81219ae1cd0a4ac2f8633cfdfb020aa66cf265e7d561572668b9bf494800
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
Gateway Time Offset RSSI SNR Hops Relay Channel Timestamp Actions
Bryn Mawr Base (BRYN) Primary 0.000s
Reference 		-71.0 dBm 6.00 dB 2 94 2N39 , BM- LongFast 2026-03-15 05:32:10 UTC Current
No other receptions found within ±2 seconds
1

Total Receptions

1

Unique Gateways