Packet #730359 Success

NODEINFO_APP packet from Meshtastic b938 (b938) to Sandwich (sndw)

4
Total Receptions
4
Unique Gateways
3
Hop Count
80
Payload Bytes
Packet Information
Database ID: 730359
Mesh Packet ID: 0x0a6ffaf7
Used for correlation across gateways
Timestamp: 2026-04-05 15:54:38 UTC
From Node: Meshtastic b938 (b938)
To Node: Sandwich (sndw)
Success: Processed
Protocol: NODEINFO_APP
Port: 4
Gateway: Meshtastic 5e80 (5e80)
Channel: LongFast
RSSI: -93 dBm
SNR: -4.0 dBm
Hop Info: 3/3 hops
Start: 3, Limit: 0
Relay Node: f4
Last byte of the last hop that relayed this packet
Payload Data
Protocol: NODEINFO_APP
Size: 80 bytes
Decoded: Yes
Decoded Data:
Long Name:Meshtastic b938
Short Name:b938
Node ID:!699cb938
MAC Address:kHBpnLk4
Hardware:HELTEC_V4
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:!49b65e80
Channel:LongFast
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
+ 1 more...
Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 2 more...
MQTT ServiceEnvelope Fields

FieldValue
gateway_id !49b65e80
Node ID format
channel_id LongFast
Default public channel
packet MeshPacket (80 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Canonical MeshPacket view reconstructed from stored protobuf bytes.

FieldValueType
from 1771878712
Source node ID 		uint32
to 863078804
Target node ID 		uint32
decoded.portnum NODEINFO_APP
NODEINFO_APP 		enum
decoded.payload_length 80 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 -93.0 dBm
Signal strength at gateway 		int32
rx_snr -4.00 dB
Signal quality at gateway 		float
rx_time 1775404466
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 8
Channel index 		uint32
pki_encrypted False
Standard encryption 		bool
next_hop Not set uint32
relay_node 244
Relay node ID 		uint32
tx_after Not set uint32
timestamp Not set 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 (3 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !49b65e80
Signal Metrics: RSSI: -93.0 dBm
SNR: -4.00 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": "!699cb938", "long_name": "Meshtastic b938", "short_name": "b938", "macaddr": "kHBpnLk4", "hw_model": "HELTEC_V4" }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "packet": { "from": 1771878712, "to": 863078804, "channel": 8, "decoded": { "portnum": "NODEINFO_APP", "payload": "CgkhNjk5Y2I5MzgSD01lc2h0YXN0aWMgYjkzOBoEYjkzOCIGkHBpnLk4KG5CIFm/4iRXJiiKi/LTVGdgB2uZL+IYiAK00TNuV06IVjNtSAA=", "request_id": 1356270499, "bitfield": 1 }, "id": 175110903, "rx_time": 1775404466, "rx_snr": -4.0, "rx_rssi": -93, "hop_start": 3, "relay_node": 244, "transport_mechanism": "TRANSPORT_LORA" }, "channel_id": "LongFast", "gateway_id": "!49b65e80" }, "mesh_packet": { "from": 1771878712, "to": 863078804, "channel": 8, "decoded": { "portnum": "NODEINFO_APP", "payload": "CgkhNjk5Y2I5MzgSD01lc2h0YXN0aWMgYjkzOBoEYjkzOCIGkHBpnLk4KG5CIFm/4iRXJiiKi/LTVGdgB2uZL+IYiAK00TNuV06IVjNtSAA=", "request_id": 1356270499, "bitfield": 1, "parsed_payload": { "id": "!699cb938", "long_name": "Meshtastic b938", "short_name": "b938", "macaddr": "kHBpnLk4", "hw_model": "HELTEC_V4", "public_key": "Wb/iJFcmKIqL8tNUZ2AHa5kv4hiIArTRM25XTohWM20=", "is_unmessagable": false, "type": "protobuf", "portnum": "NODEINFO_APP", "message_class": "User" } }, "id": 175110903, "rx_time": 1775404466, "rx_snr": -4.0, "rx_rssi": -93, "hop_start": 3, "relay_node": 244, "transport_mechanism": "TRANSPORT_LORA" } }
Raw Packet Data (80 bytes)
0a09213639396362393338120f4d65736874617374696320623933381a046239333822069070699cb938286e422059bfe2245726288a8bf2d3546760076b992fe2188802b4d1336e574e8856336d4800
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
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 5e80 (5e80) Primary 0.000s
Reference 		-93.0 dBm -4.00 dB 3 f4 LongFast 2026-04-05 15:54:38 UTC Current
3 hops Gateways that received this packet after 3 hops
Verdandi (VERD) -0.158s
Before 		-102.0 dBm 0.75 dB 3 94 LongFast 2026-04-05 15:54:38 UTC View
GunWest (Pepe) -0.021s
Before 		-104.0 dBm 0.75 dB 3 f8 FeAn LongFast 2026-04-05 15:54:38 UTC View
Meshtastic 292c (292c) -19.995s
Before 		-99.0 dBm -2.25 dB 3 38 b938 LongFast 2026-04-05 15:54:18 UTC View
4

Total Receptions

4

Unique Gateways