Packet #424025 Success

POSITION_APP packet from NCK_HeltecV3_8S 2acc (2acc) to !ffffffff

5
Total Receptions
5
Unique Gateways
7
Hop Count
22
Payload Bytes
Packet Information
Database ID: 424025
Mesh Packet ID: 0x0fc4da71
Used for correlation across gateways
Timestamp: 2026-02-26 21:28:42 UTC
From Node: NCK_HeltecV3_8S 2acc (2acc)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: Meshtastic a5c0 (a5c0)
Channel: chat.cap.ru
RSSI: -145 dBm
SNR: -18.75 dBm
Hop Info: 7/7 hops
Start: 7, Limit: 0
Relay Node: 0b
Last byte of the last hop that relayed this packet
Payload Data
Protocol: POSITION_APP
Size: 22 bytes
Decoded: Yes
Decoded Data:
Latitude:56.116838°
Longitude:47.446426°
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:22 bytes
Gateway:!55c6a5c0
Channel:chat.cap.ru
Payload Type:POSITION_APP
Hop Count:7 / 7
Privacy Summary
Exposure Level:
Broadcast
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: chat.cap.ru
+ 1 more...
Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 3 more...
MQTT ServiceEnvelope Fields

FieldValue
gateway_id !55c6a5c0
Node ID format
channel_id chat.cap.ru
packet MeshPacket (22 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Canonical MeshPacket view reconstructed from stored protobuf bytes.

FieldValueType
from 3679988428
Source node ID 		uint32
to 4294967295 (Broadcast)
Visible to all nodes 		uint32
decoded.portnum POSITION_APP
POSITION_APP 		enum
decoded.payload_length 22 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 -145.0 dBm
Signal strength at gateway 		int32
rx_snr -18.75 dB
Signal quality at gateway 		float
rx_time 1772141322
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 105
Channel index 		uint32
pki_encrypted False
Standard encryption 		bool
next_hop Not set uint32
relay_node 11
Relay node ID 		uint32
tx_after Not set uint32
timestamp Not set 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: chat.cap.ru
  • ✓ Gateway node ID tracked
Exposure Risks:
  • ⚠ Visible to all nodes on channel
  • ⚠ 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: !55c6a5c0
Position Precision: 17 bits (~182.0m accuracy)
Position precision meters: 182.0
Signal Metrics: RSSI: -145.0 dBm
SNR: -18.75 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:POSITION_APP
Size:22 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "latitude": 56.1168384, "longitude": 47.4464256, "altitude": 0, "sats_in_view": null, "precision_bits": 17 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "packet": { "from": 3679988428, "to": 4294967295, "channel": 105, "decoded": { "portnum": "POSITION_APP", "payload": "DQDAciEVAMBHHBgAKAF4AIABALgBEQ==", "bitfield": 1 }, "id": 264559217, "rx_time": 1772141322, "rx_snr": -18.75, "rx_rssi": -145, "hop_start": 7, "relay_node": 11, "transport_mechanism": "TRANSPORT_LORA" }, "channel_id": "chat.cap.ru", "gateway_id": "!55c6a5c0" }, "mesh_packet": { "from": 3679988428, "to": 4294967295, "channel": 105, "decoded": { "portnum": "POSITION_APP", "payload": "DQDAciEVAMBHHBgAKAF4AIABALgBEQ==", "bitfield": 1, "parsed_payload": { "latitude_i": 561168384, "longitude_i": 474464256, "altitude": 0, "location_source": "LOC_MANUAL", "ground_speed": 0, "ground_track": 0, "precision_bits": 17, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } }, "id": 264559217, "rx_time": 1772141322, "rx_snr": -18.75, "rx_rssi": -145, "hop_start": 7, "relay_node": 11, "transport_mechanism": "TRANSPORT_LORA" } }
Raw Packet Data (22 bytes)
0d00c072211500c0471c180028017800800100b80111
Hex Analysis:
Size:22 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
Meshtastic a5c0 (a5c0) Primary 0.000s
Reference 		-145.0 dBm -18.75 dB 7 0b chat.cap.ru 2026-02-26 21:28:42 UTC Current
7 hops Gateways that received this packet after 7 hops
crane (cran) -32.633s
Before 		-111.0 dBm -6.75 dB 7 20 9b20 chat.cap.ru 2026-02-26 21:28:10 UTC View
Meshtastic 6f70 (6f70) +0.282s
After 		Unknown Unknown 7 c0 a5c0 chat.cap.ru 2026-02-26 21:28:43 UTC View
NCHK brsk (brsk) -33.745s
Before 		-16.0 dBm 7.25 dB 7 3d brs1 chat.cap.ru 2026-02-26 21:28:08 UTC View
NCHK brsk (brs1) -37.478s
Before 		-128.0 dBm -14.50 dB 7 cc 2acc chat.cap.ru 2026-02-26 21:28:05 UTC View
5

Total Receptions

5

Unique Gateways