Packet #29904800 Success

POSITION_APP packet from EL VALLE (VALL) to USCSS NOSTROMO (XENO)

4
Total Receptions
4
Unique Gateways
0
Hop Count
28
Payload Bytes
Packet Information
Database ID: 29904800
Mesh Packet ID: 0x5d8a46a7
Used for correlation across gateways
Timestamp: 2025-12-24 21:11:55 UTC
From Node: EL VALLE (VALL)
To Node: USCSS NOSTROMO (XENO)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: USCSS NOSTROMO (XENO)
Channel: MediumFast
RSSI: -111 dBm
SNR: -4.0 dBm
Hop Info: 0/2 hops
Start: 2, Limit: 2
Relay Node: None
Payload Data
Protocol: POSITION_APP
Size: 28 bytes
Decoded: Yes
Decoded Data:
Latitude:37.938790°
Longitude:-1.107558°
Altitude:300 m
Precision:15 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:!95a578b0
Channel:MediumFast
Payload Type:POSITION_APP
Hop Count:Unknown / 2
Privacy Summary
Exposure Level:
Direct Message
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 4 more...
Exposure Risks:
⚠ Packet visible to MQTT subscribers
⚠ RF signal metrics exposed (location inference possible)
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !95a578b0
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 1951713271
Source node ID 		uint32
to 2510649520
Target node ID 		uint32
decoded.portnum 3
POSITION_APP 		enum
decoded.payload_length 28 bytes size
hop_limit 2
Remaining hops allowed 		uint32
hop_start 2
Initial hop limit 		uint32
hops_taken 0
Calculated: hop_start - hop_limit 		derived
rx_rssi -111.0 dBm
Signal strength at gateway 		int32
rx_snr -4.00 dB
Signal quality at gateway 		float
rx_time Not set 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 Not set uint32
tx_after Not set uint32
timestamp 1766610715.9638252
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
  • ✓ Custom channel: MediumFast
  • ✓ Gateway node ID tracked
  • ✓ Reduced position precision: ~729.0m accuracy
  • ✓ Zero-hop: direct from source to MQTT gateway
Exposure Risks:
  • ⚠ Packet visible to MQTT subscribers
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !95a578b0
Position Precision: 15 bits (~729.0m accuracy)
Position precision meters: 729.0
Zero Hop Policy: Enabled
Direct gateway connection
Signal Metrics: RSSI: -111.0 dBm
SNR: -4.00 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": 37.9387904, "longitude": -1.1075584, "altitude": 300, "sats_in_view": null, "precision_bits": 15 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!95a578b0", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1951713271, "to": 2510649520, "id": 1569343143, "rx_time": 0, "rx_snr": -4.0, "rx_rssi": -111, "hop_limit": 2, "hop_start": 2, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 0, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00009d1615000057ff18ac022555574c6928017800800100b8010f", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 379387904, "longitude_i": -11075584, "altitude": 300, "time": 1766610773, "location_source": "LOC_MANUAL", "ground_speed": 0, "ground_track": 0, "precision_bits": 15, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (28 bytes)
0d00009d1615000057ff18ac022555574c6928017800800100b8010f
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
USCSS NOSTROMO (XENO) Primary 0.000s
Reference 		-111.0 dBm -4.00 dB 0 - MediumFast 2025-12-24 21:11:55 UTC Current
EA5HBZ (JFML) -4.229s
Before 		-117.0 dBm -10.00 dB 0 f7 VALL MediumFast 2025-12-24 21:11:51 UTC View
NarKT3S3📡 (NKT3) +0.002s
After 		-115.0 dBm -14.75 dB 2 fa ALTA MediumFast 2025-12-24 21:11:55 UTC View
El_chito_portatil (Chpo) +68.568s
After 		-112.0 dBm -14.50 dB 0 f7 VALL MediumFast 2025-12-24 21:13:04 UTC View
4

Total Receptions

4

Unique Gateways