Packet #12112853 Success

POSITION_APP packet from Lothorien1 (a692) to !ffffffff

18
Total Receptions
18
Unique Gateways
5
Hop Count
28
Payload Bytes
Packet Information
Database ID: 12112853
Mesh Packet ID: 0x8a1ea141
Used for correlation across gateways
Timestamp: 2025-09-25 17:10:42 UTC
From Node: Lothorien1 (a692)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: Zion 🗼 (Zion)
Channel: MediumSlow
RSSI: -107 dBm
SNR: -12.25 dBm
Hop Info: 5/5 hops
Start: 5, Limit: 0
Payload Data
Protocol: POSITION_APP
Size: 28 bytes
Decoded: Yes
Decoded Data:
Latitude:40.448819°
Longitude:-3.381658°
Altitude:589 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:!849c2e30
Channel:MediumSlow
Payload Type:POSITION_APP
Hop Count:5 / 5
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 !849c2e30
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 2444928658
Source node ID 		uint32
to 4294967295 (Broadcast)
Visible to all nodes 		uint32
decoded.portnum 3
POSITION_APP 		enum
decoded.payload_length 28 bytes size
hop_limit Not set uint32
hop_start 5
Initial hop limit 		uint32
hops_taken 5
Calculated: hop_start - hop_limit 		derived
rx_rssi -107.0 dBm
Signal strength at gateway 		int32
rx_snr -12.25 dB
Signal quality at gateway 		float
rx_time 1758820240
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 86
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1758820242.3069663
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 (5 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !849c2e30
Position Precision: 13 bits (~2900.0m accuracy)
Position precision meters: 2900.0
Signal Metrics: RSSI: -107.0 dBm
SNR: -12.25 dB
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": 40.4488192, "longitude": -3.3816576, "altitude": 589, "sats_in_view": null, "precision_bits": 13 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!849c2e30", "channel_id": "MediumSlow", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2444928658, "to": 4294967295, "id": 2317263169, "rx_time": 1758820240, "rx_snr": -12.25, "rx_rssi": -107, "hop_limit": 0, "hop_start": 5, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 86, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00001c18150000fcfd18cd04258677d56828037800800100b8010d", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 404488192, "longitude_i": -33816576, "altitude": 589, "time": 1758820230, "location_source": "LOC_EXTERNAL", "ground_speed": 0, "ground_track": 0, "precision_bits": 13, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (28 bytes)
0d00001c18150000fcfd18cd04258677d56828037800800100b8010d
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
Zion 🗼 (Zion) Primary 0.000s
Reference 		-107.0 dBm -12.25 dB 5 MediumSlow 2025-09-25 17:10:42 Current
Rodashtastic🗼🌐 (RDSt) -8.451s
Before 		-121.0 dBm -13.25 dB 2 MediumSlow 2025-09-25 17:10:33 View
GRN1-Base🗼🌐 (GRN1) -8.432s
Before 		-99.0 dBm -2.00 dB 2 MediumSlow 2025-09-25 17:10:33 View
[TLG] 📡🌐🔋🔌 (tlg0) -8.177s
Before 		-112.0 dBm -6.25 dB 2 MediumSlow 2025-09-25 17:10:34 View
Mec Rocket Meco (MRM) -8.158s
Before 		-33.0 dBm 8.50 dB 2 MediumSlow 2025-09-25 17:10:34 View
Venturada2🗼🌐☀️ (Vb2) -7.684s
Before 		-98.0 dBm 2.50 dB 3 MediumSlow 2025-09-25 17:10:34 View
Will - Azuqueca (WAzq) -6.793s
Before 		-109.0 dBm -10.50 dB 4 MediumSlow 2025-09-25 17:10:35 View
Machu Pichu (MaPi) -6.499s
Before 		-99.0 dBm 0.75 dB 4 MediumSlow 2025-09-25 17:10:35 View
Fuenca fijo (c578) -6.487s
Before 		-128.0 dBm -14.75 dB 4 MediumSlow 2025-09-25 17:10:35 View
Malasaña Solar ☀️ (🌇) -6.468s
Before 		-118.0 dBm -9.00 dB 4 MediumSlow 2025-09-25 17:10:35 View
Meshtastic fbec (fbec) -6.383s
Before 		-133.0 dBm -11.00 dB 4 MediumSlow 2025-09-25 17:10:35 View
Alma Tracker (AGPS) -5.569s
Before 		-111.0 dBm -8.50 dB 5 MediumSlow 2025-09-25 17:10:36 View
Meshtastic 53fc (53fc) -5.347s
Before 		-113.0 dBm -2.25 dB 5 MediumSlow 2025-09-25 17:10:36 View
Baldur Fijo (BalF) -4.842s
Before 		-109.0 dBm -3.75 dB 5 MediumSlow 2025-09-25 17:10:37 View
Quass001 ☄️ (Q001) -4.706s
Before 		-118.0 dBm -6.75 dB 5 MediumSlow 2025-09-25 17:10:37 View
Meshtastic 1760 (1760) -3.439s
Before 		-135.0 dBm -16.25 dB 4 MediumSlow 2025-09-25 17:10:38 View
Meshtastic 18a4 (18a4) -2.494s
Before 		-51.0 dBm 13.50 dB 5 MediumSlow 2025-09-25 17:10:39 View
SkG@Home 📡🌐 (SkGH) -0.973s
Before 		-112.0 dBm -3.75 dB 5 MediumSlow 2025-09-25 17:10:41 View
18

Total Receptions

18

Unique Gateways