Packet #17800167 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: 17800167
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 1774605114.7236238
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) -0.334s
Before 		Unknown Unknown 0 18 b018 LongFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) -0.138s
Before 		Unknown Unknown 0 18 b018 LongFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) -0.121s
Before 		Unknown Unknown 0 18 b018 LongFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) -0.104s
Before 		Unknown Unknown 0 18 b018 LongFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) -0.087s
Before 		Unknown Unknown 0 18 b018 LongFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) -0.076s
Before 		Unknown Unknown 0 18 b018 LongFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) -0.065s
Before 		Unknown Unknown 0 18 b018 LongFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) -0.054s
Before 		Unknown Unknown 0 18 b018 LongFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) -0.043s
Before 		Unknown Unknown 0 18 b018 LongFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) -0.032s
Before 		Unknown Unknown 0 18 b018 LongFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) -0.022s
Before 		Unknown Unknown 0 18 b018 LongFast 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) +0.036s
After 		Unknown Unknown 0 18 b018 MediumFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.048s
After 		Unknown Unknown 0 18 b018 MediumFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.059s
After 		Unknown Unknown 0 18 b018 MediumFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.070s
After 		Unknown Unknown 0 18 b018 MediumFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.082s
After 		Unknown Unknown 0 18 b018 MediumFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.094s
After 		Unknown Unknown 0 18 b018 MediumFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.105s
After 		Unknown Unknown 0 18 b018 MediumFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.116s
After 		Unknown Unknown 0 18 b018 ShortFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.126s
After 		Unknown Unknown 0 18 b018 ShortFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.137s
After 		Unknown Unknown 0 18 b018 ShortFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.148s
After 		Unknown Unknown 0 18 b018 ShortFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.159s
After 		Unknown Unknown 0 18 b018 ShortFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.169s
After 		Unknown Unknown 0 18 b018 ShortFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.180s
After 		Unknown Unknown 0 18 b018 ShortFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.192s
After 		Unknown Unknown 0 18 b018 ShortFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.204s
After 		Unknown Unknown 0 18 b018 ShortFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.216s
After 		Unknown Unknown 0 18 b018 ShortFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.228s
After 		Unknown Unknown 0 18 b018 ShortFast 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.240s
After 		Unknown Unknown 0 18 b018 ShortTurbo 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.252s
After 		Unknown Unknown 0 18 b018 ShortTurbo 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.264s
After 		Unknown Unknown 0 18 b018 ShortTurbo 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.275s
After 		Unknown Unknown 0 18 b018 ShortTurbo 2026-03-27 09:51:54 UTC View
Meshtastic b018 (b018) +0.286s
After 		Unknown Unknown 0 18 b018 ShortTurbo 2026-03-27 09:51:55 UTC View
Meshtastic b018 (b018) +0.297s
After 		Unknown Unknown 0 18 b018 ShortTurbo 2026-03-27 09:51:55 UTC View
Meshtastic b018 (b018) +0.308s
After 		Unknown Unknown 0 18 b018 ShortTurbo 2026-03-27 09:51:55 UTC View
Meshtastic b018 (b018) +0.319s
After 		Unknown Unknown 0 18 b018 ShortTurbo 2026-03-27 09:51:55 UTC View
Meshtastic b018 (b018) +0.330s
After 		Unknown Unknown 0 18 b018 ShortTurbo 2026-03-27 09:51:55 UTC View
Meshtastic b018 (b018) +0.340s
After 		Unknown Unknown 0 18 b018 ShortTurbo 2026-03-27 09:51:55 UTC View
Meshtastic b018 (b018) +0.351s
After 		Unknown Unknown 0 18 b018 ShortTurbo 2026-03-27 09:51:55 UTC View
Meshtastic b018 (b018) +0.362s
After 		Unknown Unknown 0 18 b018 LongFast 2026-03-27 09:51:55 UTC View
45

Total Receptions

1

Unique Gateways