Packet #12554002 Success

POSITION_APP packet from Venturada2🗼🌐☀️ (Vb2) to Sierra norte Madrid ⛰️🗼🌞 (SNM)

18
Total Receptions
18
Unique Gateways
2
Hop Count
28
Payload Bytes
Packet Information
Database ID: 12554002
Mesh Packet ID: 0x65676f4b
Used for correlation across gateways
Timestamp: 2025-09-28 07:12:57 UTC
From Node: Venturada2🗼🌐☀️ (Vb2)
To Node: Sierra norte Madrid ⛰️🗼🌞 (SNM)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: Meshtastic 53fc (53fc)
Channel: MediumSlow
RSSI: -112 dBm
SNR: Unknown
Hop Info: 2/3 hops
Start: 3, Limit: 1
Payload Data
Protocol: POSITION_APP
Size: 28 bytes
Decoded: Yes
Decoded Data:
Latitude:40.868250°
Longitude:-3.538944°
Altitude:1005 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:28 bytes
Gateway:!bfa953fc
Channel:MediumSlow
Payload Type:POSITION_APP
Hop Count:2 / 3
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 !bfa953fc
Node ID format
channel_id MediumSlow
packet MeshPacket (28 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 2687837872
Source node ID 		uint32
to 1129719940
Target node ID 		uint32
decoded.portnum 3
POSITION_APP 		enum
decoded.payload_length 28 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 -112.0 dBm
Signal strength at gateway 		int32
rx_snr Not set float
rx_time 1759043576
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 Not set uint32
tx_after Not set uint32
timestamp 1759043577.919481
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: ~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: !bfa953fc
Position Precision: 13 bits (~2900.0m accuracy)
Position precision meters: 2900.0
Signal Metrics: RSSI: -112.0 dBm
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:POSITION_APP
Size:28 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "latitude": 40.8682496, "longitude": -3.538944, "altitude": 1005, "sats_in_view": null, "precision_bits": 13 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!bfa953fc", "channel_id": "MediumSlow", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2687837872, "to": 1129719940, "id": 1701277515, "rx_time": 1759043576, "rx_snr": 0.0, "rx_rssi": -112, "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": 0, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00005c18150000e4fd18ed0725a8dfd86828017800800100b8010d", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 408682496, "longitude_i": -35389440, "altitude": 1005, "time": 1759043496, "location_source": "LOC_MANUAL", "ground_speed": 0, "ground_track": 0, "precision_bits": 13, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (28 bytes)
0d00005c18150000e4fd18ed0725a8dfd86828017800800100b8010d
Hex Analysis:
Size:28 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 53fc (53fc) Primary 0.000s
Reference 		-112.0 dBm Unknown 2 MediumSlow 2025-09-28 07:12:57 Current
Venturada2🗼🌐☀️ (Vb2) -81.216s
Before 		Unknown Unknown 0 MediumSlow 2025-09-28 07:11:36 View
SkG@Home 📡🌐 (SkGH) -66.396s
Before 		-126.0 dBm -17.75 dB 0 MediumSlow 2025-09-28 07:11:51 View
Malasaña Solar ☀️ (🌇) -62.539s
Before 		-115.0 dBm -7.25 dB 1 MediumSlow 2025-09-28 07:11:55 View
Suop 📡 🌐 (SUOP) -58.186s
Before 		-113.0 dBm -3.50 dB 1 MediumSlow 2025-09-28 07:11:59 View
Kenobi23 QTH (5aec) -58.044s
Before 		-99.0 dBm 1.00 dB 1 MediumSlow 2025-09-28 07:11:59 View
Meshtastic 18a4 (18a4) -57.813s
Before 		Unknown Unknown 2 MediumSlow 2025-09-28 07:12:00 View
Meshtastic 1760 (1760) -57.165s
Before 		-122.0 dBm -6.75 dB 1 MediumSlow 2025-09-28 07:12:00 View
Machu Pichu (MaPi) -54.640s
Before 		-94.0 dBm 0.50 dB 3 MediumSlow 2025-09-28 07:12:03 View
Will - Azuqueca (WAzq) -53.791s
Before 		-106.0 dBm 2.00 dB 3 MediumSlow 2025-09-28 07:12:04 View
Rodashtastic🗼🌐 (RDSt) -53.574s
Before 		-112.0 dBm -4.50 dB 3 MediumSlow 2025-09-28 07:12:04 View
Naranjo C191 🌐 (FNL) -53.571s
Before 		-112.0 dBm -4.25 dB 3 MediumSlow 2025-09-28 07:12:04 View
[TLG] 📡🌐🔋🔌 (tlg0) -53.570s
Before 		-110.0 dBm -4.50 dB 3 MediumSlow 2025-09-28 07:12:04 View
Mec Rocket Meco (MRM) -53.226s
Before 		-113.0 dBm -10.00 dB 3 MediumSlow 2025-09-28 07:12:04 View
EA5GHE-09 (58a8) -52.184s
Before 		-108.0 dBm -15.00 dB 2 MediumSlow 2025-09-28 07:12:05 View
g1bal (g1b0) -42.668s
Before 		-91.0 dBm 6.00 dB 3 MediumSlow 2025-09-28 07:12:15 View
Baldur Fijo (BalF) +1.765s
After 		-122.0 dBm -12.25 dB 3 MediumSlow 2025-09-28 07:12:59 View
G71NCH3-NB-MAD-02 (G71B) +2002.315s
After 		-39.0 dBm 9.00 dB 1 MediumSlow 2025-09-28 07:46:20 View
18

Total Receptions

18

Unique Gateways