Packet #665875 Success

POSITION_APP packet from Matilde-GT-8 (🦖) to Joao-C-8 (jsc8)

2
Total Receptions
2
Unique Gateways
2
Hop Count
27
Payload Bytes
Packet Information
Database ID: 665875
Mesh Packet ID: 0xb77c473b
Used for correlation across gateways
Timestamp: 2026-05-15 19:27:51 UTC
From Node: Matilde-GT-8 (🦖)
To Node: Joao-C-8 (jsc8)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: Serip Portable-8 (NMP8)
Channel: LongFast
RSSI: -108 dBm
SNR: -7.5 dBm
Hop Info: 2/4 hops
Start: 4, Limit: 2
Relay Node: 24 RLCL
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: 27 bytes
Decoded: Yes
Decoded Data:
Latitude:39.742101°
Longitude:-8.830216°
Altitude:77 m
Precision:32 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:27 bytes
Gateway:!9e786d08
Channel:LongFast
Payload Type:POSITION_APP
Hop Count:2 / 4
Privacy Summary
Exposure Level:
Direct Message
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 1 more...
Exposure Risks:
âš  Default channel - no encryption
âš  Packet visible to MQTT subscribers
+ 3 more...
MQTT ServiceEnvelope Fields

FieldValue
gateway_id !9e786d08
Node ID format
channel_id LongFast
Default public channel
packet MeshPacket (27 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Canonical MeshPacket view reconstructed from stored protobuf bytes.

FieldValueType
from 500342640
Source node ID 		uint32
to 463854388
Target node ID 		uint32
decoded.portnum POSITION_APP
POSITION_APP 		enum
decoded.payload_length 27 bytes size
hop_limit 2
Remaining hops allowed 		uint32
hop_start 4
Initial hop limit 		uint32
hops_taken 2
Calculated: hop_start - hop_limit 		derived
rx_rssi -108.0 dBm
Signal strength at gateway 		int32
rx_snr -7.50 dB
Signal quality at gateway 		float
rx_time 1778871056
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 36
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:
  • âš  Default channel - no encryption
  • âš  Packet visible to MQTT subscribers
  • âš  Full GPS precision shared
  • âš  Multi-hop path visible (2 hops)
  • âš  RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !9e786d08
Position Precision: 32 bits (~1.0m accuracy)
Position precision meters: 1.0
Signal Metrics: RSSI: -108.0 dBm
SNR: -7.50 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:POSITION_APP
Size:27 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "latitude": 39.7421012, "longitude": -8.8302158, "altitude": 77, "sats_in_view": null, "precision_bits": 32 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "packet": { "from": 500342640, "to": 463854388, "channel": 8, "decoded": { "portnum": "POSITION_APP", "payload": "DdQpsBcVsp28+hhNJRprB2ooA3gAgAEAuAEg", "request_id": 953528270, "bitfield": 1 }, "id": 3078375227, "rx_time": 1778871056, "rx_snr": -7.5, "hop_limit": 2, "rx_rssi": -108, "hop_start": 4, "relay_node": 36, "transport_mechanism": "TRANSPORT_LORA" }, "channel_id": "LongFast", "gateway_id": "!9e786d08" }, "mesh_packet": { "from": 500342640, "to": 463854388, "channel": 8, "decoded": { "portnum": "POSITION_APP", "payload": "DdQpsBcVsp28+hhNJRprB2ooA3gAgAEAuAEg", "request_id": 953528270, "bitfield": 1, "parsed_payload": { "latitude_i": 397421012, "longitude_i": -88302158, "altitude": 77, "time": 1778871066, "location_source": "LOC_EXTERNAL", "ground_speed": 0, "ground_track": 0, "precision_bits": 32, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } }, "id": 3078375227, "rx_time": 1778871056, "rx_snr": -7.5, "hop_limit": 2, "rx_rssi": -108, "hop_start": 4, "relay_node": 36, "transport_mechanism": "TRANSPORT_LORA" } }
Raw Packet Data (27 bytes)
0dd429b01715b29dbcfa184d251a6b076a28037800800100b80120
Hex Analysis:
Size:27 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
Serip Portable-8 (NMP8) Primary 0.000s
Reference 		-108.0 dBm -7.50 dB 2 24 RLCL LongFast 2026-05-15 19:27:51 UTC Current
2 hops Gateways that received this packet after 2 hops
AFM0-GW-8🇵🇹 (AFM0) -2213.570s
Before 		-97.0 dBm 4.75 dB 2 86 DVS8 , B00P LongFast 2026-05-15 18:50:58 UTC View
2

Total Receptions

2

Unique Gateways