Packet #29917261 Success

POSITION_APP packet from LA SELVA ⛰️📡 (sel8) to USCSS NOSTROMO (XENO)

10
Total Receptions
10
Unique Gateways
2
Hop Count
23
Payload Bytes
Packet Information
Database ID: 29917261
Mesh Packet ID: 0xb1a5a4a5
Used for correlation across gateways
Timestamp: 2025-12-24 22:18:16 UTC
From Node: LA SELVA ⛰️📡 (sel8)
To Node: USCSS NOSTROMO (XENO)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: ROQUETAS 2 - EA7HMB ☀️🗼 (RQT2)
Channel: MediumFast
RSSI: -99 dBm
SNR: -6.5 dBm
Hop Info: 2/5 hops
Start: 5, Limit: 3
Relay Node: 0f AL11
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: 23 bytes
Decoded: Yes
Decoded Data:
Latitude:37.932237°
Longitude:-1.703936°
Altitude:1521 m
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:23 bytes
Gateway:!047e8e78
Channel:MediumFast
Payload Type:POSITION_APP
Hop Count:2 / 5
Privacy Summary
Exposure Level:
Direct Message
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Targeted to specific node
+ 3 more...
Exposure Risks:
⚠ Packet visible to MQTT subscribers
⚠ Multi-hop path visible (2 hops)
+ 1 more...
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !047e8e78
Node ID format
channel_id MediumFast
packet MeshPacket (23 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 2397953166
Source node ID 		uint32
to 2510649520
Target node ID 		uint32
decoded.portnum 3
POSITION_APP 		enum
decoded.payload_length 23 bytes size
hop_limit 3
Remaining hops allowed 		uint32
hop_start 5
Initial hop limit 		uint32
hops_taken 2
Calculated: hop_start - hop_limit 		derived
rx_rssi -99.0 dBm
Signal strength at gateway 		int32
rx_snr -6.50 dB
Signal quality at gateway 		float
rx_time 1766614697
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 15
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1766614696.6859763
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: MediumFast
  • ✓ Gateway node ID tracked
  • ✓ Reduced position precision: ~2900.0m accuracy
Exposure Risks:
  • ⚠ Packet visible to MQTT subscribers
  • ⚠ Multi-hop path visible (2 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !047e8e78
Position Precision: 13 bits (~2900.0m accuracy)
Position precision meters: 2900.0
Signal Metrics: RSSI: -99.0 dBm
SNR: -6.50 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:POSITION_APP
Size:23 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "latitude": 37.9322368, "longitude": -1.703936, "altitude": 1521, "sats_in_view": null, "precision_bits": 13 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!047e8e78", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2397953166, "to": 2510649520, "id": 2980422821, "rx_time": 1766614697, "rx_snr": -6.5, "rx_rssi": -99, "hop_limit": 3, "hop_start": 5, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 15, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00009c16150000fcfe18f10b28017800800100b8010d", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 379322368, "longitude_i": -17039360, "altitude": 1521, "location_source": "LOC_MANUAL", "ground_speed": 0, "ground_track": 0, "precision_bits": 13, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (23 bytes)
0d00009c16150000fcfe18f10b28017800800100b8010d
Hex Analysis:
Size:23 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
ROQUETAS 2 - EA7HMB ☀️🗼 (RQT2) Primary 0.000s
Reference 		-99.0 dBm -6.50 dB 2 0f AL11 MediumFast 2025-12-24 22:18:16 UTC Current
CARREFOUR ea5wa (WA01) -3.171s
Before 		-114.0 dBm -9.00 dB 3 a4 📍 MediumFast 2025-12-24 22:18:13 UTC View
San_Pablo🗼 (SP00) -3.167s
Before 		-123.0 dBm -14.75 dB 3 a4 📍 MediumFast 2025-12-24 22:18:13 UTC View
EAL Station 1 🗼🌐 (EAL1) -3.142s
Before 		-109.0 dBm -3.75 dB 3 a4 📍 MediumFast 2025-12-24 22:18:13 UTC View
Karman’s HeltecV4 Beta (KHV4) -1.304s
Before 		-106.0 dBm -13.00 dB 5 64 ALT1 MediumFast 2025-12-24 22:18:15 UTC View
NarKT3S3📡 (NKT3) +0.793s
After 		-115.0 dBm -14.50 dB 4 fa ALTA MediumFast 2025-12-24 22:18:17 UTC View
EA8EE_Albacete (EA8E) +0.934s
After 		-102.0 dBm -5.75 dB 5 38 MIK1 MediumFast 2025-12-24 22:18:17 UTC View
Mula_LaTorre_Int (MUL2) +2.143s
After 		-43.0 dBm 10.75 dB 1 9c MULA MediumFast 2025-12-24 22:18:18 UTC View
El_chito_portatil (Chpo) +4.914s
After 		-121.0 dBm -10.25 dB 4 fa ALTA MediumFast 2025-12-24 22:18:21 UTC View
USCSS NOSTROMO (XENO) +18.322s
After 		-110.0 dBm -2.25 dB 4 - MediumFast 2025-12-24 22:18:35 UTC View
10

Total Receptions

10

Unique Gateways