Packet #27336081 Success

POSITION_APP packet from EA3HGK CLM-8 (Gio) to !ffffffff

15
Total Receptions
15
Unique Gateways
2
Hop Count
33
Payload Bytes
Packet Information
Database ID: 27336081
Mesh Packet ID: 0xb431fb1b
Used for correlation across gateways
Timestamp: 2025-12-13 06:34:18 UTC
From Node: EA3HGK CLM-8 (Gio)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: EA3KZ-02 Terrassa (KZ02)
Channel: LongFast
RSSI: -101 dBm
SNR: -5.75 dBm
Hop Info: 2/4 hops
Start: 4, Limit: 2
Relay Node: e0 FCS4
Last byte of the last hop that relayed this packet - Candidate source node(s) based on 0-hop direct receptions
Payload Data
Protocol: POSITION_APP
Size: 33 bytes
Decoded: Yes
Decoded Data:
Latitude:41.468314°
Longitude:1.822310°
Altitude:207 m
Satellites:19
Precision:19 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:33 bytes
Gateway:!9ee85d50
Channel:LongFast
Payload Type:POSITION_APP
Hop Count:2 / 4
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 !9ee85d50
Node ID format
channel_id LongFast
Default public channel
packet MeshPacket (33 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 2054761996
Source node ID 		uint32
to 4294967295 (Broadcast)
Visible to all nodes 		uint32
decoded.portnum 3
POSITION_APP 		enum
decoded.payload_length 33 bytes size
hop_limit 2
Remaining hops allowed 		uint32
hop_start 4
Initial hop limit 		uint32
hops_taken 2
Calculated: hop_start - hop_limit 		derived
rx_rssi -101.0 dBm
Signal strength at gateway 		int32
rx_snr -5.75 dB
Signal quality at gateway 		float
rx_time 1765607656
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 224
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1765607658.607587
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 (2 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !9ee85d50
Position Precision: 19 bits (~45.0m accuracy)
Position precision meters: 45.0
Signal Metrics: RSSI: -101.0 dBm
SNR: -5.75 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:POSITION_APP
Size:33 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "latitude": 41.4683136, "longitude": 1.8223104, "altitude": 207, "sats_in_view": 19, "precision_bits": 19 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!9ee85d50", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2054761996, "to": 4294967295, "id": 3023174427, "rx_time": 1765607656, "rx_snr": -5.75, "rx_rssi": -101, "hop_limit": 2, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 224, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d0090b718150010160118cf0125e8083d69280258777800800100980113b80113", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 414683136, "longitude_i": 18223104, "altitude": 207, "time": 1765607656, "location_source": "LOC_INTERNAL", "PDOP": 119, "ground_speed": 0, "ground_track": 0, "sats_in_view": 19, "precision_bits": 19, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (33 bytes)
0d0090b718150010160118cf0125e8083d69280258777800800100980113b80113
Hex Analysis:
Size:33 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
EA3KZ-02 Terrassa (KZ02) Primary 0.000s
Reference 		-101.0 dBm -5.75 dB 2 e0 FCS4 LongFast 2025-12-13 06:34:18 UTC Current
EA3HGK 🔗 Sant Llorenç d'Hortons (Gio) -2.348s
Before 		-37.0 dBm 6.75 dB 0 0c Gio LongFast 2025-12-13 06:34:16 UTC View
Rubí - FCSv4 (FCS4) -1.214s
Before 		-93.0 dBm 2.50 dB 1 0a LongFast 2025-12-13 06:34:17 UTC View
CV-Oriol-GW-8 📡 (CVO2) -1.008s
Before 		-114.0 dBm -4.00 dB 1 0a LongFast 2025-12-13 06:34:17 UTC View
EAMG_rubí 🏠 (EAMG) -0.005s
Before 		-89.0 dBm -19.50 dB 2 e0 FCS4 LongFast 2025-12-13 06:34:18 UTC View
CROQUETASTIC-CL-868 (CRQT) +0.667s
After 		-134.0 dBm -10.75 dB 2 fc PTHX LongFast 2025-12-13 06:34:19 UTC View
StBoiCLM-8jj (SBJ1) +1.347s
After 		-115.0 dBm -7.00 dB 2 10 LongFast 2025-12-13 06:34:19 UTC View
CODY-ConcaDeTremp-GW-868 (CODY) +1.363s
After 		-128.0 dBm -20.50 dB 3 8f LongFast 2025-12-13 06:34:19 UTC View
EA3JAV-SBD-MPL2-CM-8 🏠 (MPL2) +1.664s
After 		-128.0 dBm -18.25 dB 3 8f LongFast 2025-12-13 06:34:20 UTC View
g0maintt (g0mq) +1.857s
After 		-77.0 dBm -6.75 dB 3 60 g0sr LongFast 2025-12-13 06:34:20 UTC View
Kira fijo casa (EVA1) +2.270s
After 		-94.0 dBm -2.50 dB 3 50 KZ02 LongFast 2025-12-13 06:34:20 UTC View
EB3FWC-Girona📡-GW-868 (EB3F) +2.536s
After 		-87.0 dBm 3.75 dB 4 - LongFast 2025-12-13 06:34:21 UTC View
🇮🇨nomada81🇪🇸 (YETi) +2.628s
After 		-111.0 dBm -8.25 dB 4 - LongFast 2025-12-13 06:34:21 UTC View
MontcadaCentro-CL-868🗼🌐 (d9e8) +4.305s
After 		-78.0 dBm 7.00 dB 4 18 SPAX LongFast 2025-12-13 06:34:22 UTC View
XDCP-GW-8 (XDC3) +9.321s
After 		-118.0 dBm -20.25 dB 4 b8 EVA1 LongFast 2025-12-13 06:34:27 UTC View
15

Total Receptions

15

Unique Gateways