Packet #13617476 Success

POSITION_APP packet from EA4LS QTH (4LS1) to !ffffffff

11
Total Receptions
11
Unique Gateways
2
Hop Count
34
Payload Bytes
Packet Information
Database ID: 13617476
Mesh Packet ID: 0xd8410b1c
Used for correlation across gateways
Timestamp: 2025-10-04 21:52:12 UTC
From Node: EA4LS QTH (4LS1)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: Arganda C191 🌐 (ARG)
Channel: MediumSlow
RSSI: -109 dBm
SNR: -1.0 dBm
Hop Info: 2/3 hops
Start: 3, Limit: 1
Payload Data
Protocol: POSITION_APP
Size: 34 bytes
Decoded: Yes
Decoded Data:
Latitude:40.658534°
Longitude:-4.063232°
Altitude:1014 m
Satellites:6
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:34 bytes
Gateway:!9ee79500
Channel:MediumSlow
Payload Type:POSITION_APP
Hop Count:2 / 3
Privacy Summary
Exposure Level:
Broadcast
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: MediumSlow
+ 2 more...
Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 2 more...
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !9ee79500
Node ID format
channel_id MediumSlow
packet MeshPacket (34 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 3127200688
Source node ID 		uint32
to 4294967295 (Broadcast)
Visible to all nodes 		uint32
decoded.portnum 3
POSITION_APP 		enum
decoded.payload_length 34 bytes size
hop_limit 1
Remaining hops allowed 		uint32
hop_start 3
Initial hop limit 		uint32
hops_taken 2
Calculated: hop_start - hop_limit 		derived
rx_rssi -109.0 dBm
Signal strength at gateway 		int32
rx_snr -1.00 dB
Signal quality at gateway 		float
rx_time 1759612060
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 136
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1759614732.9018698
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)
  • ✓ Custom channel: MediumSlow
  • ✓ Gateway node ID tracked
  • ✓ Reduced position precision: ~2900.0m accuracy
Exposure Risks:
  • ⚠ Visible to all nodes on channel
  • ⚠ Packet visible to MQTT subscribers
  • ⚠ Multi-hop path visible (2 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !9ee79500
Position Precision: 13 bits (~2900.0m accuracy)
Position precision meters: 2900.0
Signal Metrics: RSSI: -109.0 dBm
SNR: -1.00 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:POSITION_APP
Size:34 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "latitude": 40.6585344, "longitude": -4.063232, "altitude": 1014, "sats_in_view": 6, "precision_bits": 13 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!9ee79500", "channel_id": "MediumSlow", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3127200688, "to": 4294967295, "id": 3628141340, "rx_time": 1759612060, "rx_snr": -1.0, "rx_rssi": -109, "hop_limit": 1, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 136, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00003c1815000094fd18f60725978ce168280258dd127800800100980106b8010d", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 406585344, "longitude_i": -40632320, "altitude": 1014, "time": 1759612055, "location_source": "LOC_INTERNAL", "PDOP": 2397, "ground_speed": 0, "ground_track": 0, "sats_in_view": 6, "precision_bits": 13, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (34 bytes)
0d00003c1815000094fd18f60725978ce168280258dd127800800100980106b8010d
Hex Analysis:
Size:34 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
Arganda C191 🌐 (ARG) Primary 0.000s
Reference 		-109.0 dBm -1.00 dB 2 MediumSlow 2025-10-04 21:52:12 Current
Villalbilla02 (VBV2) -2671.086s
Before 		-111.0 dBm -3.25 dB 2 MediumSlow 2025-10-04 21:07:41 View
Trasto 🐰 Va (trva) -2671.071s
Before 		-114.0 dBm -10.25 dB 2 MediumSlow 2025-10-04 21:07:41 View
Malasaña Solar ☀️ (🌇) -2671.069s
Before 		-79.0 dBm 7.75 dB 2 MediumSlow 2025-10-04 21:07:41 View
Venturada2🗼🌐☀️ (Vb2) -2670.421s
Before 		-95.0 dBm -13.50 dB 2 MediumSlow 2025-10-04 21:07:42 View
Meshtastic 1760 (1760) -2670.111s
Before 		-131.0 dBm -15.00 dB 3 MediumSlow 2025-10-04 21:07:42 View
GRN1-Base🗼🌐 (GRN1) -2670.093s
Before 		-90.0 dBm 4.50 dB 3 MediumSlow 2025-10-04 21:07:42 View
Zion 🗼 (Zion) -2669.394s
Before 		-107.0 dBm -13.25 dB 3 MediumSlow 2025-10-04 21:07:43 View
Meshtastic 2688 (2688) -2669.047s
Before 		-118.0 dBm -1.00 dB 3 MediumSlow 2025-10-04 21:07:43 View
Baldur Fijo (BalF) -2667.661s
Before 		-111.0 dBm -11.00 dB 3 MediumSlow 2025-10-04 21:07:45 View
Meshtastic 54a4 Justicia (54a4) -2666.478s
Before 		-112.0 dBm -10.00 dB 3 MediumSlow 2025-10-04 21:07:46 View
11

Total Receptions

11

Unique Gateways