Packet #3855235 Success

TELEMETRY_APP packet from GHT_Terrassa-CL-8 (GHT1) to !ffffffff

6
Total Receptions
6
Unique Gateways
3
Hop Count
17
Payload Bytes
Packet Information
Database ID: 3855235
Mesh Packet ID: 0xa9972e57
Used for correlation across gateways
Timestamp: 2025-07-16 05:17:13 UTC
From Node: GHT_Terrassa-CL-8 (GHT1)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: TELEMETRY_APP
Port: 67
Gateway: EA3HVF-5-T1000-CL-868 (vhf5)
Channel: LongFast
RSSI: -113 dBm
SNR: -4.75 dBm
Hop Info: 3/3 hops
Start: 3, Limit: 0
Payload Data
Protocol: TELEMETRY_APP
Size: 17 bytes
Decoded: Yes
Decoded Data:
Environment Metrics:
Temperature:23.6°C
Humidity:42.2%
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:17 bytes
Gateway:!28dfbc74
Channel:LongFast
Payload Type:TELEMETRY_APP
Hop Count:3 / 3
Privacy Summary
Exposure Level:
Broadcast
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked
Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 3 more...
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !28dfbc74
Node ID format
channel_id LongFast
Default public channel
packet MeshPacket (17 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 3811051152
Source node ID 		uint32
to 4294967295 (Broadcast)
Visible to all nodes 		uint32
decoded.portnum 67
TELEMETRY_APP 		enum
decoded.payload_length 17 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 -113.0 dBm
Signal strength at gateway 		int32
rx_snr -4.75 dB
Signal quality at gateway 		float
rx_time 1752643032
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 10
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1752643033.2332504
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)
  • ✓ Gateway node ID tracked
Exposure Risks:
  • ⚠ Visible to all nodes on channel
  • ⚠ 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: !28dfbc74
Signal Metrics: RSSI: -113.0 dBm
SNR: -4.75 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:TELEMETRY_APP
Size:17 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "time": 1752643025, "environment_metrics": { "temperature": 23.61, "relative_humidity": 42.24 } }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!28dfbc74", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3811051152, "to": 4294967295, "id": 2845257303, "rx_time": 1752643032, "rx_snr": -4.75, "rx_rssi": -113, "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": 10, "tx_after": 0, "decoded": { "portnum": 67, "payload": "0dd13577681a0a0d48e1bc4115c3f52842", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "time": 1752643025, "environment_metrics": { "temperature": 23.61, "relative_humidity": 42.24 }, "type": "protobuf", "portnum": "TELEMETRY_APP", "message_class": "Telemetry" } } } }
Raw Packet Data (17 bytes)
0dd13577681a0a0d48e1bc4115c3f52842
Hex Analysis:
Size:17 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
EA3HVF-5-T1000-CL-868 (vhf5) Primary 0.000s
Reference 		-113.0 dBm -4.75 dB 3 LongFast 2025-07-16 05:17:13 Current
Cardedeu-GW-868 (GC) -3.686s
Before 		-134.0 dBm -11.00 dB 1 LongFast 2025-07-16 05:17:09 View
Rodarit 1 (e38c) -2.421s
Before 		-128.0 dBm -17.75 dB 2 LongFast 2025-07-16 05:17:10 View
MontcadaCentro-CL-868🗼🌐 (d9e8) -2.178s
Before 		-111.0 dBm -11.75 dB 2 LongFast 2025-07-16 05:17:11 View
EB3FWC-Girona📡-GW-868 (EB3F) -1.980s
Before 		-98.0 dBm -8.50 dB 3 LongFast 2025-07-16 05:17:11 View
CV-Oriol-GW-8 📡 (CVO2) -1.111s
Before 		-101.0 dBm 3.50 dB 3 LongFast 2025-07-16 05:17:12 View
6

Total Receptions

6

Unique Gateways