Packet #12552607 Success

POSITION_APP packet from 鳥居 (⛩) to Sierra norte Madrid ⛰️🗼🌞 (SNM)

14
Total Receptions
14
Unique Gateways
0
Hop Count
20
Payload Bytes
Packet Information
Database ID: 12552607
Mesh Packet ID: 0x6d602810
Used for correlation across gateways
Timestamp: 2025-09-28 07:09:58 UTC
From Node: 鳥居 (⛩)
To Node: Sierra norte Madrid ⛰️🗼🌞 (SNM)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: Meshtastic 18a4 (18a4)
Channel: MediumSlow
RSSI: -112 dBm
SNR: -5.25 dBm
Hop Info: 0/3 hops
Start: 3, Limit: 3
Payload Data
Protocol: POSITION_APP
Size: 20 bytes
Decoded: Yes
Decoded Data:
Latitude:40.442266°
Longitude:-3.676570°
Precision:15 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:!c0c318a4
Channel:MediumSlow
Payload Type:POSITION_APP
Hop Count:Unknown / 3
Privacy Summary
Exposure Level:
Direct Message
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 4 more...
Exposure Risks:
⚠ Packet visible to MQTT subscribers
⚠ RF signal metrics exposed (location inference possible)
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !c0c318a4
Node ID format
channel_id MediumSlow
packet MeshPacket (20 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 2551456468
Source node ID 		uint32
to 1129719940
Target node ID 		uint32
decoded.portnum 3
POSITION_APP 		enum
decoded.payload_length 20 bytes size
hop_limit 3
Remaining hops allowed 		uint32
hop_start 3
Initial hop limit 		uint32
hops_taken 0
Calculated: hop_start - hop_limit 		derived
rx_rssi -112.0 dBm
Signal strength at gateway 		int32
rx_snr -5.25 dB
Signal quality at gateway 		float
rx_time 1759043454
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 212
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1759043398.623656
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
  • ✓ Custom channel: MediumSlow
  • ✓ Gateway node ID tracked
  • ✓ Reduced position precision: ~729.0m accuracy
  • ✓ Zero-hop: direct from source to MQTT gateway
Exposure Risks:
  • ⚠ Packet visible to MQTT subscribers
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !c0c318a4
Position Precision: 15 bits (~729.0m accuracy)
Position precision meters: 729.0
Zero Hop Policy: Enabled
Direct gateway connection
Signal Metrics: RSSI: -112.0 dBm
SNR: -5.25 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": 40.4422656, "longitude": -3.6765696, "altitude": null, "sats_in_view": null, "precision_bits": 15 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!c0c318a4", "channel_id": "MediumSlow", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2551456468, "to": 1129719940, "id": 1835018256, "rx_time": 1759043454, "rx_snr": -5.25, "rx_rssi": -112, "hop_limit": 3, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 212, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00001b18150000cffd252bdfd8682801b8010f", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 404422656, "longitude_i": -36765696, "time": 1759043371, "location_source": "LOC_MANUAL", "precision_bits": 15, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (20 bytes)
0d00001b18150000cffd252bdfd8682801b8010f
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
Meshtastic 18a4 (18a4) Primary 0.000s
Reference 		-112.0 dBm -5.25 dB 0 MediumSlow 2025-09-28 07:09:58 Current
Kenobi23 QTH (5aec) +0.077s
After 		-93.0 dBm 4.50 dB 0 MediumSlow 2025-09-28 07:09:58 View
Meshtastic 1760 (1760) +1.020s
After 		-112.0 dBm 1.25 dB 0 MediumSlow 2025-09-28 07:09:59 View
Venturada2🗼🌐☀️ (Vb2) +90.756s
After 		-100.0 dBm -3.75 dB 1 MediumSlow 2025-09-28 07:11:29 View
Malasaña Solar ☀️ (🌇) +91.158s
After 		-118.0 dBm -12.00 dB 1 MediumSlow 2025-09-28 07:11:29 View
Rodashtastic🗼🌐 (RDSt) +99.256s
After 		-116.0 dBm -8.00 dB 3 MediumSlow 2025-09-28 07:11:37 View
EA5GHE-09 (58a8) +99.385s
After 		-109.0 dBm -14.25 dB 2 MediumSlow 2025-09-28 07:11:38 View
[TLG] 📡🌐🔋🔌 (tlg0) +99.742s
After 		-114.0 dBm -5.00 dB 3 MediumSlow 2025-09-28 07:11:38 View
Monolito (MoN) +101.627s
After 		-68.0 dBm 9.00 dB 3 MediumSlow 2025-09-28 07:11:40 View
Will - Azuqueca (WAzq) +118.678s
After 		-106.0 dBm 1.50 dB 3 MediumSlow 2025-09-28 07:11:57 View
Machu Pichu (MaPi) +118.907s
After 		-91.0 dBm -2.50 dB 3 MediumSlow 2025-09-28 07:11:57 View
Naranjo C191 🌐 (FNL) +118.963s
After 		-112.0 dBm -3.75 dB 3 MediumSlow 2025-09-28 07:11:57 View
Mec Rocket Meco (MRM) +119.098s
After 		-113.0 dBm -12.25 dB 3 MediumSlow 2025-09-28 07:11:57 View
G71NCH3-NB-MAD-02 (G71B) +2176.603s
After 		-40.0 dBm 9.00 dB 3 MediumSlow 2025-09-28 07:46:15 View
14

Total Receptions

14

Unique Gateways