Packet #5914362 Success

POSITION_APP packet from electrophys (ephy) to !ffffffff

16
Total Receptions
14
Unique Gateways
7
Hop Count
20
Payload Bytes
Packet Information
Database ID: 5914362
Mesh Packet ID: 0xd7e18ef4
Used for correlation across gateways
Timestamp: 2026-01-14 12:38:15 UTC
From Node: electrophys (ephy)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: SYSXX BGW8 (SXB8)
Channel: LongFast
RSSI: -127 dBm
SNR: -17.25 dBm
Hop Info: 7/7 hops
Start: 7, Limit: 0
Payload Data
Protocol: POSITION_APP
Size: 20 bytes
Decoded: Yes
Decoded Data:
Latitude:55.641702°
Longitude:37.488230°
Precision:17 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:!efffff01
Channel:LongFast
Payload Type:POSITION_APP
Hop Count:7 / 7
Privacy Summary
Exposure Level:
Broadcast
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked
Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 4 more...
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !efffff01
Node ID format
channel_id LongFast
Default public channel
packet MeshPacket (20 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 48602476
Source node ID 		uint32
to 4294967295 (Broadcast)
Visible to all nodes 		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 -127.0 dBm
Signal strength at gateway 		int32
rx_snr -17.25 dB
Signal quality at gateway 		float
rx_time 1768383496
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 1768383495.7769864
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)
  • ✓ Gateway node ID tracked
Exposure Risks:
  • ⚠ Visible to all nodes on channel
  • ⚠ Default channel - no encryption
  • ⚠ 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
Gateway ID: !efffff01
Position Precision: 17 bits (~182.0m accuracy)
Position precision meters: 182.0
Signal Metrics: RSSI: -127.0 dBm
SNR: -17.25 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": 55.6417024, "longitude": 37.4882304, "altitude": null, "sats_in_view": null, "precision_bits": 17 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!efffff01", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 48602476, "to": 4294967295, "id": 3621883636, "rx_time": 1768383496, "rx_snr": -17.25, "rx_rssi": -127, "hop_limit": 0, "hop_start": 7, "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": "0d00402a21150040581625a45667692801b80111", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 556417024, "longitude_i": 374882304, "time": 1768380068, "location_source": "LOC_MANUAL", "precision_bits": 17, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (20 bytes)
0d00402a21150040581625a45667692801b80111
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 BGW8 (SXB8) Primary 0.000s
Reference 		-127.0 dBm -17.25 dB 7 LongFast 2026-01-14 12:38:15 Current
SYSXX OGW8 (SXG8) -3002.766s
Before 		-71.0 dBm 6.25 dB 4 LongFast 2026-01-14 11:48:13 View
SYSXX YGW8 (SXY8) -3002.731s
Before 		Unknown 6.25 dB 4 LongFast 2026-01-14 11:48:13 View
Butyrskaya 868 (But8) -3001.757s
Before 		-102.0 dBm -2.00 dB 5 LongFast 2026-01-14 11:48:14 View
Zoͦmͫвⷡiͥeͤ [GW8] (🧟) -3000.279s
Before 		-91.0 dBm 1.00 dB 6 LongFast 2026-01-14 11:48:15 View
Aster-02 (AST2) -2996.669s
Before 		-98.0 dBm -11.75 dB 6 LongFast 2026-01-14 11:48:19 View
Medved GW8 (MED8) -2993.974s
Before 		-123.0 dBm -16.00 dB 6 LongFast 2026-01-14 11:48:21 View
patch866 (pth8) -2992.331s
Before 		-70.0 dBm 4.00 dB 7 LongFast 2026-01-14 11:48:23 View
EGarpunov 2 868 (Base) (BAO) (EG28) -2981.027s
Before 		-113.0 dBm -7.00 dB 7 LongFast 2026-01-14 11:48:34 View
Fostral (FSTR) -2980.946s
Before 		-83.0 dBm -16.75 dB 7 LongFast 2026-01-14 11:48:34 View
SYSXX BGW8 (SXB8) -2972.281s
Before 		-55.0 dBm 6.25 dB 5 LongFast 2026-01-14 11:48:43 View
Tsaritsyno_KB_U_868 (KBU8) -2968.932s
Before 		-109.0 dBm -1.25 dB 7 LongFast 2026-01-14 11:48:46 View
RN3ABX Georgy 2 (ABX2) -2577.382s
Before 		-111.0 dBm -2.75 dB 6 LongFast 2026-01-14 11:55:18 View
ZA_MKAD_22_868_1 (8681) -1998.918s
Before 		-137.0 dBm -14.25 dB 7 LongFast 2026-01-14 12:04:56 View
Dragon868-1 (D1) -1998.862s
Before 		-105.0 dBm -9.75 dB 7 LongFast 2026-01-14 12:04:56 View
Aster-02 (AST2) +0.054s
After 		-101.0 dBm -13.75 dB 7 LongFast 2026-01-14 12:38:15 View
16

Total Receptions

14

Unique Gateways