Packet #17897214 Success

POSITION_APP packet from Teplak 17 (TP17) to Kalko FC40 (KALK)

2
Total Receptions
2
Unique Gateways
7
Hop Count
20
Payload Bytes
Packet Information
Database ID: 17897214
Mesh Packet ID: 0x477e1340
Used for correlation across gateways
Timestamp: 2026-05-30 20:37:25 UTC
From Node: Teplak 17 (TP17)
To Node: Kalko FC40 (KALK)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: SYSXX YGW8 (SXY8)
Channel: MediumFast
RSSI: -77 dBm
SNR: 4.5 dBm
Hop Info: 7/7 hops
Start: 7, Limit: 0
Payload Data
Protocol: POSITION_APP
Size: 20 bytes
Decoded: Yes
Decoded Data:
Latitude:55.626547°
Longitude:37.510758°
Precision:19 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:20 bytes
Gateway:!efffff02
Channel:MediumFast
Payload Type:POSITION_APP
Hop Count:7 / 7
Privacy Summary
Exposure Level:
Direct Message
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Acknowledgment requested
+ 3 more...
Exposure Risks:
⚠ Packet visible to MQTT subscribers
⚠ Full GPS precision shared
+ 2 more...
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !efffff02
Node ID format
channel_id MediumFast
packet MeshPacket (20 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 1771738592
Source node ID 		uint32
to 37092071
Target node ID 		uint32
decoded.portnum 3
POSITION_APP 		enum
decoded.payload_length 20 bytes size
hop_limit Not set uint32
hop_start 7
Initial hop limit 		uint32
hops_taken 7
Calculated: hop_start - hop_limit 		derived
rx_rssi -77.0 dBm
Signal strength at gateway 		int32
rx_snr 4.50 dB
Signal quality at gateway 		float
rx_time 1780162645
Receive timestamp 		fixed32
via_mqtt False
Direct LoRa transmission 		bool
want_ack True
Acknowledgment 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 32
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1780162645.554537
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)
  • ✓ Acknowledgment requested
  • ✓ Targeted to specific node
  • ✓ Custom channel: MediumFast
  • ✓ Gateway node ID tracked
Exposure Risks:
  • ⚠ Packet visible to MQTT subscribers
  • ⚠ Full GPS precision shared
  • ⚠ Multi-hop path visible (7 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Want ack: True
Gateway ID: !efffff02
Position Precision: 19 bits (~45.0m accuracy)
Position precision meters: 45.0
Signal Metrics: RSSI: -77.0 dBm
SNR: 4.50 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:POSITION_APP
Size:20 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "latitude": 55.6265472, "longitude": 37.5107584, "altitude": null, "sats_in_view": null, "precision_bits": 19 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!efffff02", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1771738592, "to": 37092071, "id": 1199444800, "rx_time": 1780162645, "rx_snr": 4.5, "rx_rssi": -77, "hop_limit": 0, "hop_start": 7, "via_mqtt": 0, "want_ack": 1, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 32, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00f027211500b05b162548201b6a2801b80113", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 556265472, "longitude_i": 375107584, "time": 1780162632, "location_source": "LOC_MANUAL", "precision_bits": 19, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (20 bytes)
0d00f027211500b05b162548201b6a2801b80113
Hex Analysis:
Size:20 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 Channel Timestamp Actions
SYSXX YGW8 (SXY8) Primary 0.000s
Reference 		-77.0 dBm 4.50 dB 7 MediumFast 2026-05-30 20:37:25 Current
Aster-02 (AST2) +2.204s
After 		-89.0 dBm -8.75 dB 6 MediumFast 2026-05-30 20:37:27 View
2

Total Receptions

2

Unique Gateways