Packet #17800173 Success

POSITION_APP packet from Meshtastic b018 (b018) to !ffffffff

45
Total Receptions
1
Unique Gateways
0
Hop Count
27
Payload Bytes
Packet Information
Database ID: 17800173
Mesh Packet ID: 0x9b1b57f7
Used for correlation across gateways
Timestamp: 2026-03-27 09:51:54 UTC
From Node: Meshtastic b018 (b018)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: Meshtastic b018 (b018)
Channel: MediumFast
RSSI: Unknown
SNR: Unknown
Hop Info: 0/7 hops
Start: 7, Limit: 7
Relay Node: 18 b018
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:46.406042°
Longitude:-72.515584°
Altitude:42 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:27 bytes
Gateway:!db51b018
Channel:MediumFast
Payload Type:POSITION_APP
Hop Count:Unknown / 7
Privacy Summary
Exposure Level:
Broadcast
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: MediumFast
+ 3 more...
Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !db51b018
Node ID format
channel_id MediumFast
packet MeshPacket (27 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 3679563800
Source node ID 		uint32
to 4294967295 (Broadcast)
Visible to all nodes 		uint32
decoded.portnum 3
POSITION_APP 		enum
decoded.payload_length 27 bytes size
hop_limit 7
Remaining hops allowed 		uint32
hop_start 7
Initial hop limit 		uint32
hops_taken 0
Calculated: hop_start - hop_limit 		derived
rx_rssi Not set int32
rx_snr Not set float
rx_time 1774605113
Receive timestamp 		fixed32
via_mqtt False
Direct LoRa transmission 		bool
want_ack False
No ACK requested 		bool
priority 10
Packet priority level 		enum
delayed Not set enum
channel Not set uint32
pki_encrypted False
Standard encryption 		bool
next_hop Not set uint32
relay_node 24
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1774605114.7941165
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: ~729.0m accuracy
  • ✓ Zero-hop: direct from source to MQTT gateway
Exposure Risks:
  • ⚠ Visible to all nodes on channel
  • ⚠ Packet visible to MQTT subscribers
MQTT-Specific Fields
Gateway ID: !db51b018
Position Precision: 15 bits (~729.0m accuracy)
Position precision meters: 729.0
Zero Hop Policy: Enabled
Direct gateway connection
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": 46.4060416, "longitude": -72.515584, "altitude": 42, "sats_in_view": null, "precision_bits": 15 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!db51b018", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3679563800, "to": 4294967295, "id": 2602260471, "rx_time": 1774605113, "rx_snr": 0.0, "rx_rssi": 0, "hop_limit": 7, "hop_start": 7, "via_mqtt": false, "want_ack": false, "priority": 10, "delayed": 0, "channel_index": null, "pki_encrypted": false, "next_hop": 0, "relay_node": 24, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d0000a91b150000c7d4182a253953c66928017800800100b8010f", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 464060416, "longitude_i": -725155840, "altitude": 42, "time": 1774605113, "location_source": "LOC_MANUAL", "ground_speed": 0, "ground_track": 0, "precision_bits": 15, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (27 bytes)
0d0000a91b150000c7d4182a253953c66928017800800100b8010f
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
Meshtastic b018 (b018) Primary 0.000s
Reference 		Unknown Unknown 0 18 b018 MediumFast 2026-03-27 09:51:54 UTC Current
Meshtastic b018 (b018) -0.404s
Before 		Unknown Unknown 0 18 b018 LongFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) -0.209s
Before 		Unknown Unknown 0 18 b018 LongFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) -0.191s
Before 		Unknown Unknown 0 18 b018 LongFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) -0.174s
Before 		Unknown Unknown 0 18 b018 LongFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) -0.157s
Before 		Unknown Unknown 0 18 b018 LongFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) -0.146s
Before 		Unknown Unknown 0 18 b018 LongFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) -0.135s
Before 		Unknown Unknown 0 18 b018 LongFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) -0.125s
Before 		Unknown Unknown 0 18 b018 LongFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) -0.114s
Before 		Unknown Unknown 0 18 b018 LongFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) -0.103s
Before 		Unknown Unknown 0 18 b018 LongFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) -0.092s
Before 		Unknown Unknown 0 18 b018 LongFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) -0.081s
Before 		Unknown Unknown 0 18 b018 MediumFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) -0.070s
Before 		Unknown Unknown 0 18 b018 MediumFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) -0.058s
Before 		Unknown Unknown 0 18 b018 MediumFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) -0.046s
Before 		Unknown Unknown 0 18 b018 MediumFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) -0.034s
Before 		Unknown Unknown 0 18 b018 MediumFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) -0.023s
Before 		Unknown Unknown 0 18 b018 MediumFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) -0.011s
Before 		Unknown Unknown 0 18 b018 MediumFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.012s
After 		Unknown Unknown 0 18 b018 MediumFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.024s
After 		Unknown Unknown 0 18 b018 MediumFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.034s
After 		Unknown Unknown 0 18 b018 MediumFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.045s
After 		Unknown Unknown 0 18 b018 ShortFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.056s
After 		Unknown Unknown 0 18 b018 ShortFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.067s
After 		Unknown Unknown 0 18 b018 ShortFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.077s
After 		Unknown Unknown 0 18 b018 ShortFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.088s
After 		Unknown Unknown 0 18 b018 ShortFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.099s
After 		Unknown Unknown 0 18 b018 ShortFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.109s
After 		Unknown Unknown 0 18 b018 ShortFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.122s
After 		Unknown Unknown 0 18 b018 ShortFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.134s
After 		Unknown Unknown 0 18 b018 ShortFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.146s
After 		Unknown Unknown 0 18 b018 ShortFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.158s
After 		Unknown Unknown 0 18 b018 ShortFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.170s
After 		Unknown Unknown 0 18 b018 ShortTurbo 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.181s
After 		Unknown Unknown 0 18 b018 ShortTurbo 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.193s
After 		Unknown Unknown 0 18 b018 ShortTurbo 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.205s
After 		Unknown Unknown 0 18 b018 ShortTurbo 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.216s
After 		Unknown Unknown 0 18 b018 ShortTurbo 2026-03-27 09:51:55 UTC View
Meshtastic b018 (b018) +0.227s
After 		Unknown Unknown 0 18 b018 ShortTurbo 2026-03-27 09:51:55 UTC View
Meshtastic b018 (b018) +0.238s
After 		Unknown Unknown 0 18 b018 ShortTurbo 2026-03-27 09:51:55 UTC View
Meshtastic b018 (b018) +0.248s
After 		Unknown Unknown 0 18 b018 ShortTurbo 2026-03-27 09:51:55 UTC View
Meshtastic b018 (b018) +0.259s
After 		Unknown Unknown 0 18 b018 ShortTurbo 2026-03-27 09:51:55 UTC View
Meshtastic b018 (b018) +0.270s
After 		Unknown Unknown 0 18 b018 ShortTurbo 2026-03-27 09:51:55 UTC View
Meshtastic b018 (b018) +0.281s
After 		Unknown Unknown 0 18 b018 ShortTurbo 2026-03-27 09:51:55 UTC View
Meshtastic b018 (b018) +0.291s
After 		Unknown Unknown 0 18 b018 LongFast 2026-03-27 09:51:55 UTC View
45

Total Receptions

1

Unique Gateways