Packet #39842583 Success

POSITION_APP packet from Lambton Bridge1 - wiki.mt.gt (c578) to !ffffffff

45
Total Receptions
1
Unique Gateways
0
Hop Count
37
Payload Bytes
Packet Information
Database ID: 39842583
Mesh Packet ID: 0xafc0b9b9
Used for correlation across gateways
Timestamp: 2026-05-17 04:12:38 UTC
From Node: Lambton Bridge1 - wiki.mt.gt (c578)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: Lambton Bridge1 - wiki.mt.gt (c578)
Channel: ShortTurbo
RSSI: Unknown
SNR: Unknown
Hop Info: 0/3 hops
Start: 3, Limit: 3
Relay Node: 78 c578
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: 37 bytes
Decoded: Yes
Decoded Data:
Latitude:42.965402°
Longitude:-82.129715°
Altitude:330 m
Satellites:5
Precision:13 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:37 bytes
Gateway:!c4f7c578
Channel:ShortTurbo
Payload Type:POSITION_APP
Hop Count:Unknown / 3
Privacy Summary
Exposure Level:
Broadcast
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: ShortTurbo
+ 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 !c4f7c578
Node ID format
channel_id ShortTurbo
packet MeshPacket (37 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 3304572280
Source node ID 		uint32
to 4294967295 (Broadcast)
Visible to all nodes 		uint32
decoded.portnum 3
POSITION_APP 		enum
decoded.payload_length 37 bytes size
hop_limit 3
Remaining hops allowed 		uint32
hop_start 3
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 1778991157
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 120
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1778991158.079608
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: ShortTurbo
  • ✓ Gateway node ID tracked
  • ✓ Reduced position precision: ~2900.0m 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: !c4f7c578
Position Precision: 13 bits (~2900.0m accuracy)
Position precision meters: 2900.0
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:37 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "latitude": 42.9654016, "longitude": -82.1297152, "altitude": 330, "sats_in_view": 5, "precision_bits": 13 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!c4f7c578", "channel_id": "ShortTurbo", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3304572280, "to": 4294967295, "id": 2948643257, "rx_time": 1778991157, "rx_snr": 0.0, "rx_rssi": 0, "hop_limit": 3, "hop_start": 3, "via_mqtt": false, "want_ack": false, "priority": 10, "delayed": 0, "channel_index": null, "pki_encrypted": false, "next_hop": 0, "relay_node": 120, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00009c191500000ccf18ca02253540096a280258e602781e8001d0f4f605980105b8010d", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 429654016, "longitude_i": -821297152, "altitude": 330, "time": 1778991157, "location_source": "LOC_INTERNAL", "PDOP": 358, "ground_speed": 30, "ground_track": 12434000, "sats_in_view": 5, "precision_bits": 13, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (37 bytes)
0d00009c191500000ccf18ca02253540096a280258e602781e8001d0f4f605980105b8010d
Hex Analysis:
Size:37 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
Lambton Bridge1 - wiki.mt.gt (c578) Primary 0.000s
Reference 		Unknown Unknown 0 78 c578 ShortTurbo 2026-05-17 04:12:38 UTC Current
Lambton Bridge1 - wiki.mt.gt (c578) -0.545s
Before 		Unknown Unknown 0 78 c578 LongFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.533s
Before 		Unknown Unknown 0 78 c578 LongFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.522s
Before 		Unknown Unknown 0 78 c578 LongFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.509s
Before 		Unknown Unknown 0 78 c578 LongFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.497s
Before 		Unknown Unknown 0 78 c578 LongFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.484s
Before 		Unknown Unknown 0 78 c578 LongFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.473s
Before 		Unknown Unknown 0 78 c578 LongFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.461s
Before 		Unknown Unknown 0 78 c578 LongFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.449s
Before 		Unknown Unknown 0 78 c578 LongFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.436s
Before 		Unknown Unknown 0 78 c578 LongFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.424s
Before 		Unknown Unknown 0 78 c578 LongFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.413s
Before 		Unknown Unknown 0 78 c578 MediumFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.401s
Before 		Unknown Unknown 0 78 c578 MediumFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.390s
Before 		Unknown Unknown 0 78 c578 MediumFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.379s
Before 		Unknown Unknown 0 78 c578 MediumFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.361s
Before 		Unknown Unknown 0 78 c578 MediumFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.350s
Before 		Unknown Unknown 0 78 c578 MediumFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.333s
Before 		Unknown Unknown 0 78 c578 MediumFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.320s
Before 		Unknown Unknown 0 78 c578 MediumFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.293s
Before 		Unknown Unknown 0 78 c578 MediumFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.273s
Before 		Unknown Unknown 0 78 c578 MediumFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.255s
Before 		Unknown Unknown 0 78 c578 MediumFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.245s
Before 		Unknown Unknown 0 78 c578 ShortFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.227s
Before 		Unknown Unknown 0 78 c578 ShortFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.209s
Before 		Unknown Unknown 0 78 c578 ShortFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.199s
Before 		Unknown Unknown 0 78 c578 ShortFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.182s
Before 		Unknown Unknown 0 78 c578 ShortFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.171s
Before 		Unknown Unknown 0 78 c578 ShortFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.160s
Before 		Unknown Unknown 0 78 c578 ShortFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.140s
Before 		Unknown Unknown 0 78 c578 ShortFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.124s
Before 		Unknown Unknown 0 78 c578 ShortFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.107s
Before 		Unknown Unknown 0 78 c578 ShortFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.085s
Before 		Unknown Unknown 0 78 c578 ShortFast 2026-05-17 04:12:37 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.064s
Before 		Unknown Unknown 0 78 c578 ShortTurbo 2026-05-17 04:12:38 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.049s
Before 		Unknown Unknown 0 78 c578 ShortTurbo 2026-05-17 04:12:38 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) -0.019s
Before 		Unknown Unknown 0 78 c578 ShortTurbo 2026-05-17 04:12:38 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) +0.019s
After 		Unknown Unknown 0 78 c578 ShortTurbo 2026-05-17 04:12:38 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) +0.037s
After 		Unknown Unknown 0 78 c578 ShortTurbo 2026-05-17 04:12:38 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) +0.057s
After 		Unknown Unknown 0 78 c578 ShortTurbo 2026-05-17 04:12:38 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) +0.079s
After 		Unknown Unknown 0 78 c578 ShortTurbo 2026-05-17 04:12:38 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) +0.096s
After 		Unknown Unknown 0 78 c578 ShortTurbo 2026-05-17 04:12:38 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) +0.108s
After 		Unknown Unknown 0 78 c578 ShortTurbo 2026-05-17 04:12:38 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) +0.120s
After 		Unknown Unknown 0 78 c578 ShortTurbo 2026-05-17 04:12:38 UTC View
Lambton Bridge1 - wiki.mt.gt (c578) +0.133s
After 		Unknown Unknown 0 78 c578 LongFast 2026-05-17 04:12:38 UTC View
45

Total Receptions

1

Unique Gateways