Packet #5892216 Success

POSITION_APP packet from SYSXX YGW8 (SXY8) to electrophys (ephy)

10
Total Receptions
10
Unique Gateways
0
Hop Count
27
Payload Bytes
Packet Information
Database ID: 5892216
Mesh Packet ID: 0x6640db91
Used for correlation across gateways
Timestamp: 2026-01-14 08:39:45 UTC
From Node: SYSXX YGW8 (SXY8)
To Node: electrophys (ephy)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: SYSXX YGW8 (SXY8)
Channel: LongFast
RSSI: Unknown
SNR: Unknown
Hop Info: 0/7 hops
Start: 7, Limit: 7
Payload Data
Protocol: POSITION_APP
Size: 27 bytes
Decoded: Yes
Decoded Data:
Latitude:55.781550°
Longitude:37.485840°
Altitude:18 m
Precision:32 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:!efffff02
Channel:LongFast
Payload Type:POSITION_APP
Hop Count:Unknown / 7
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
+ 1 more...
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !efffff02
Node ID format
channel_id LongFast
Default public channel
packet MeshPacket (27 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 4026531586
Source node ID 		uint32
to 48602476
Target node ID 		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 1768369184
Receive timestamp 		fixed32
via_mqtt False
Direct LoRa transmission 		bool
want_ack False
No ACK requested 		bool
priority 70
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 2
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1768369185.3064015
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
  • ✓ Zero-hop: direct from source to MQTT gateway
Exposure Risks:
  • ⚠ Default channel - no encryption
  • ⚠ Packet visible to MQTT subscribers
  • ⚠ Full GPS precision shared
MQTT-Specific Fields
Gateway ID: !efffff02
Position Precision: 32 bits (~1.0m accuracy)
Position precision meters: 1.0
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": 55.78155, "longitude": 37.48584, "altitude": 18, "sats_in_view": null, "precision_bits": 32 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!efffff02", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 4026531586, "to": 48602476, "id": 1715526545, "rx_time": 1768369184, "rx_snr": 0.0, "rx_rssi": 0, "hop_limit": 7, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 70, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 2, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0dcc963f2115a0e25716181225202c676928017800800100b80120", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 557815500, "longitude_i": 374858400, "altitude": 18, "time": 1768369184, "location_source": "LOC_MANUAL", "ground_speed": 0, "ground_track": 0, "precision_bits": 32, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (27 bytes)
0dcc963f2115a0e25716181225202c676928017800800100b80120
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 Channel Timestamp Actions
SYSXX YGW8 (SXY8) Primary 0.000s
Reference 		Unknown Unknown 0 LongFast 2026-01-14 08:39:45 Current
SYSXX OGW8 (SXG8) +89.157s
After 		-48.0 dBm 6.00 dB 0 LongFast 2026-01-14 08:41:14 View
SYSXX BGW8 (SXB8) +89.204s
After 		-4.0 dBm 6.75 dB 0 LongFast 2026-01-14 08:41:14 View
Cyb (17e8) +90.725s
After 		-114.0 dBm -20.00 dB 0 LongFast 2026-01-14 08:41:16 View
RN3ABX Georgy 2 (ABX2) +91.046s
After 		-116.0 dBm -10.50 dB 0 LongFast 2026-01-14 08:41:16 View
Zamkad8 (zmkd) +98.837s
After 		-125.0 dBm -15.75 dB 2 LongFast 2026-01-14 08:41:24 View
Butyrskaya 868 (But8) +101.775s
After 		-122.0 dBm -19.75 dB 4 LongFast 2026-01-14 08:41:27 View
Aster-02 (AST2) +102.646s
After 		-103.0 dBm -16.50 dB 3 LongFast 2026-01-14 08:41:27 View
Zoͦmͫвⷡiͥeͤ [GW8] (🧟) +109.387s
After 		-105.0 dBm -14.00 dB 5 LongFast 2026-01-14 08:41:34 View
Koptevo-8-MQTT (BM8M) +130.421s
After 		-117.0 dBm -14.25 dB 6 LongFast 2026-01-14 08:41:55 View
10

Total Receptions

10

Unique Gateways