Packet #5661919 Success

POSITION_APP packet from 8b54 Himki (8b54) to Sunshine (SUN)

9
Total Receptions
8
Unique Gateways
3
Hop Count
38
Payload Bytes
Packet Information
Database ID: 5661919
Mesh Packet ID: 0xfea6e6ca
Used for correlation across gateways
Timestamp: 2026-01-12 19:06:58 UTC
From Node: 8b54 Himki (8b54)
To Node: Sunshine (SUN)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: Zamkad8 (zmkd)
Channel: LongFast
RSSI: -120 dBm
SNR: -15.5 dBm
Hop Info: 3/4 hops
Start: 4, Limit: 1
Payload Data
Protocol: POSITION_APP
Size: 38 bytes
Decoded: Yes
Decoded Data:
Latitude:55.967744°
Longitude:37.407949°
Altitude:1087 m
Satellites:8
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:38 bytes
Gateway:!9ee99fcc
Channel:LongFast
Payload Type:POSITION_APP
Hop Count:3 / 4
Privacy Summary
Exposure Level:
Direct Message
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 2 more...
Exposure Risks:
⚠ Default channel - no encryption
⚠ Packet visible to MQTT subscribers
+ 2 more...
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !9ee99fcc
Node ID format
channel_id LongFast
Default public channel
packet MeshPacket (38 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 318933844
Source node ID 		uint32
to 313538432
Target node ID 		uint32
decoded.portnum 3
POSITION_APP 		enum
decoded.payload_length 38 bytes size
hop_limit 1
Remaining hops allowed 		uint32
hop_start 4
Initial hop limit 		uint32
hops_taken 3
Calculated: hop_start - hop_limit 		derived
rx_rssi -120.0 dBm
Signal strength at gateway 		int32
rx_snr -15.50 dB
Signal quality at gateway 		float
rx_time 1768234016
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 Not set uint32
pki_encrypted False
Standard encryption 		bool
next_hop Not set uint32
relay_node 188
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1768234018.3585572
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)
  • ✓ Targeted to specific node
  • ✓ Gateway node ID tracked
  • ✓ Reduced position precision: ~2900.0m accuracy
Exposure Risks:
  • ⚠ Default channel - no encryption
  • ⚠ Packet visible to MQTT subscribers
  • ⚠ Multi-hop path visible (3 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !9ee99fcc
Position Precision: 13 bits (~2900.0m accuracy)
Position precision meters: 2900.0
Signal Metrics: RSSI: -120.0 dBm
SNR: -15.50 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:POSITION_APP
Size:38 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "latitude": 55.967744, "longitude": 37.4079488, "altitude": 1087, "sats_in_view": 8, "precision_bits": 13 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!9ee99fcc", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 318933844, "to": 313538432, "id": 4272350922, "rx_time": 1768234016, "rx_snr": -15.5, "rx_rssi": -120, "hop_limit": 1, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 188, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00005c211500004c1618bf08250e1b6569280258b40e78a901800180d2940c980108b8010d", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 559677440, "longitude_i": 374079488, "altitude": 1087, "time": 1768233742, "location_source": "LOC_INTERNAL", "PDOP": 1844, "ground_speed": 169, "ground_track": 25504000, "sats_in_view": 8, "precision_bits": 13, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (38 bytes)
0d00005c211500004c1618bf08250e1b6569280258b40e78a901800180d2940c980108b8010d
Hex Analysis:
Size:38 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
Zamkad8 (zmkd) Primary 0.000s
Reference 		-120.0 dBm -15.50 dB 3 LongFast 2026-01-12 19:06:58 Current
Aster-02 (AST2) -0.307s
Before 		-101.0 dBm -15.75 dB 3 LongFast 2026-01-12 19:06:58 View
SYSXX YGW8 (SXY8) +81.190s
After 		-86.0 dBm 3.50 dB 4 LongFast 2026-01-12 19:08:19 View
SYSXX BGW8 (SXB8) +81.200s
After 		-114.0 dBm -6.00 dB 4 LongFast 2026-01-12 19:08:19 View
SYSXX OGW8 (SXG8) +81.235s
After 		-128.0 dBm -17.50 dB 4 LongFast 2026-01-12 19:08:19 View
RN3ABX Georgy 2 (ABX2) +81.507s
After 		-107.0 dBm 3.50 dB 4 LongFast 2026-01-12 19:08:19 View
ZA_MKAD_22_868_1 (8681) +334.139s
After 		-138.0 dBm -14.75 dB 4 LongFast 2026-01-12 19:12:32 View
Dragon868-1 (D1) +334.165s
After 		-107.0 dBm -5.00 dB 4 LongFast 2026-01-12 19:12:32 View
ZA_MKAD_22_868_1 (8681) +334.352s
After 		-138.0 dBm -14.75 dB 4 LongFast 2026-01-12 19:12:32 View
9

Total Receptions

8

Unique Gateways