Packet #30158190 Success

POSITION_APP packet from Dexter T1 (DexT) to !ffffffff

17
Total Receptions
17
Unique Gateways
3
Hop Count
28
Payload Bytes
Packet Information
Database ID: 30158190
Mesh Packet ID: 0x101a764b
Used for correlation across gateways
Timestamp: 2025-12-25 21:05:50 UTC
From Node: Dexter T1 (DexT)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: XiaoWatt c4c8 🌐🔌 (c4c8)
Channel: MediumFast
RSSI: -101 dBm
SNR: -11.0 dBm
Hop Info: 3/4 hops
Start: 4, Limit: 1
Relay Node: f5 RPT4
Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions
Payload Data
Protocol: POSITION_APP
Size: 28 bytes
Decoded: Yes
Decoded Data:
Latitude:40.566784°
Longitude:-3.919053°
Altitude:846 m
Precision:14 bits
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:28 bytes
Gateway:!3387c4c8
Channel:MediumFast
Payload Type:POSITION_APP
Hop Count:3 / 4
Privacy Summary
Exposure Level:
Broadcast
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: MediumFast
+ 2 more...
Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 2 more...
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !3387c4c8
Node ID format
channel_id MediumFast
packet MeshPacket (28 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 1770380124
Source node ID 		uint32
to 4294967295 (Broadcast)
Visible to all nodes 		uint32
decoded.portnum 3
POSITION_APP 		enum
decoded.payload_length 28 bytes size
hop_limit 1
Remaining hops allowed 		uint32
hop_start 4
Initial hop limit 		uint32
hops_taken 3
Calculated: hop_start - hop_limit 		derived
rx_rssi -101.0 dBm
Signal strength at gateway 		int32
rx_snr -11.00 dB
Signal quality at gateway 		float
rx_time 1766696749
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 245
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1766696750.0804467
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
  • ✓ Reduced position precision: ~1500.0m accuracy
Exposure Risks:
  • ⚠ Visible to all nodes on channel
  • ⚠ Packet visible to MQTT subscribers
  • ⚠ Multi-hop path visible (3 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !3387c4c8
Position Precision: 14 bits (~1500.0m accuracy)
Position precision meters: 1500.0
Signal Metrics: RSSI: -101.0 dBm
SNR: -11.00 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:POSITION_APP
Size:28 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "latitude": 40.566784, "longitude": -3.9190528, "altitude": 846, "sats_in_view": null, "precision_bits": 14 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!3387c4c8", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1770380124, "to": 4294967295, "id": 270169675, "rx_time": 1766696749, "rx_snr": -11.0, "rx_rssi": -101, "hop_limit": 1, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 245, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00002e18150000aafd18ce06252ba74d6928037800800100b8010e", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 405667840, "longitude_i": -39190528, "altitude": 846, "time": 1766696747, "location_source": "LOC_EXTERNAL", "ground_speed": 0, "ground_track": 0, "precision_bits": 14, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (28 bytes)
0d00002e18150000aafd18ce06252ba74d6928037800800100b8010e
Hex Analysis:
Size:28 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
XiaoWatt c4c8 🌐🔌 (c4c8) Primary 0.000s
Reference 		-101.0 dBm -11.00 dB 3 f5 RPT4 MediumFast 2025-12-25 21:05:50 UTC Current
GRN1-Base🗼🌐 🔋 (GRN1) -0.368s
Before 		-106.0 dBm -10.75 dB 2 - MediumFast 2025-12-25 21:05:49 UTC View
Karabanchel_Baldur (KarB) -0.120s
Before 		-96.0 dBm 1.50 dB 3 1c 1f1c , 🐷 MediumFast 2025-12-25 21:05:49 UTC View
🎄 SkG@Home 📡🌐 (SkGH) -0.118s
Before 		-101.0 dBm -10.75 dB 3 1c 🐷 MediumFast 2025-12-25 21:05:49 UTC View
Wake Up, Neo...📡 (NEO) -0.072s
Before 		-100.0 dBm -3.00 dB 3 f5 RPT4 MediumFast 2025-12-25 21:05:50 UTC View
Skynet (Sky) +0.049s
After 		-81.0 dBm -11.50 dB 3 1c 🐷 MediumFast 2025-12-25 21:05:50 UTC View
🤖 Nicolas Cage 🌐 (Cage) +0.172s
After 		-103.0 dBm -6.25 dB 3 1c 🐷 MediumFast 2025-12-25 21:05:50 UTC View
tizon (Sylv) +0.227s
After 		-105.0 dBm 3.75 dB 3 1c 🐷 MediumFast 2025-12-25 21:05:50 UTC View
[samsepi0l] 📡🌐 (tlg0) +0.317s
After 		-95.0 dBm -2.00 dB 2 - MediumFast 2025-12-25 21:05:50 UTC View
Tatooine 🏠 Kenobi 📡☀ (Knb0) +0.340s
After 		-94.0 dBm -0.50 dB 3 f5 RPT4 MediumFast 2025-12-25 21:05:50 UTC View
Varela Bot 🏡🤖 (🤖) +0.552s
After 		-84.0 dBm 6.75 dB 3 1c 🏡 MediumFast 2025-12-25 21:05:50 UTC View
Ocumare Norte🗼🌐 (RRN) +0.766s
After 		-67.0 dBm 10.25 dB 4 98 TCLB MediumFast 2025-12-25 21:05:50 UTC View
Venturada2 🗼🌞 (Vb2) +1.499s
After 		-100.0 dBm 2.00 dB 3 f5 RPT4 MediumFast 2025-12-25 21:05:51 UTC View
Quass001 ☄️ (Q001) +1.962s
After 		-40.0 dBm 10.75 dB 4 3a Q005 MediumFast 2025-12-25 21:05:52 UTC View
g1bal (g1b0) +2.594s
After 		-112.0 dBm -7.50 dB 4 90 MediumFast 2025-12-25 21:05:52 UTC View
X Wing 🚀 Kenobi (Knb2) +10.989s
After 		-45.0 dBm 12.50 dB 4 b5 Knb0 MediumFast 2025-12-25 21:06:01 UTC View
flau pruebas (🏐) +210.032s
After 		-94.0 dBm 9.00 dB 3 f5 RPT4 MediumFast 2025-12-25 21:09:20 UTC View
17

Total Receptions

17

Unique Gateways