Packet #29203818 Success

POSITION_APP packet from D4NISC ☀️🏠 (D4N) to !ffffffff

15
Total Receptions
15
Unique Gateways
3
Hop Count
28
Payload Bytes
Packet Information
Database ID: 29203818
Mesh Packet ID: 0x3ac90948
Used for correlation across gateways
Timestamp: 2025-12-21 19:37:59 UTC
From Node: D4NISC ☀️🏠 (D4N)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: GRN1-Base🗼🌐 🔋 (GRN1)
Channel: MediumFast
RSSI: -105 dBm
SNR: -8.25 dBm
Hop Info: 3/4 hops
Start: 4, Limit: 1
Relay Node: None
Payload Data
Protocol: POSITION_APP
Size: 28 bytes
Decoded: Yes
Decoded Data:
Latitude:40.180122°
Longitude:-3.689677°
Altitude:636 m
Precision:15 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:!43b706e8
Channel:MediumFast
Payload Type:POSITION_APP
Hop Count:3 / 4
Privacy Summary
Exposure Level:
Broadcast
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: MediumFast
+ 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 !43b706e8
Node ID format
channel_id MediumFast
packet MeshPacket (28 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 2464501878
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 1
Remaining hops allowed 		uint32
hop_start 4
Initial hop limit 		uint32
hops_taken 3
Calculated: hop_start - hop_limit 		derived
rx_rssi -105.0 dBm
Signal strength at gateway 		int32
rx_snr -8.25 dB
Signal quality at gateway 		float
rx_time 1766345877
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 1766345879.8667445
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: MediumFast
  • ✓ Gateway node ID tracked
  • ✓ Reduced position precision: ~729.0m accuracy
Exposure Risks:
  • ⚠ Visible to all nodes on channel
  • ⚠ Packet visible to MQTT subscribers
  • ⚠ Multi-hop path visible (3 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !43b706e8
Position Precision: 15 bits (~729.0m accuracy)
Position precision meters: 729.0
Signal Metrics: RSSI: -105.0 dBm
SNR: -8.25 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": 40.1801216, "longitude": -3.6896768, "altitude": 636, "sats_in_view": null, "precision_bits": 15 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!43b706e8", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2464501878, "to": 4294967295, "id": 986253640, "rx_time": 1766345877, "rx_snr": -8.25, "rx_rssi": -105, "hop_limit": 1, "hop_start": 4, "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": "0d0000f317150000cdfd18fc0425924c486928017800800100b8010f", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 401801216, "longitude_i": -36896768, "altitude": 636, "time": 1766345874, "location_source": "LOC_MANUAL", "ground_speed": 0, "ground_track": 0, "precision_bits": 15, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (28 bytes)
0d0000f317150000cdfd18fc0425924c486928017800800100b8010f
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 Relay Channel Timestamp Actions
GRN1-Base🗼🌐 🔋 (GRN1) Primary 0.000s
Reference 		-105.0 dBm -8.25 dB 3 - MediumFast 2025-12-21 19:37:59 UTC Current
ETH Maverick (ET01) -2.533s
Before 		-88.0 dBm 1.75 dB 1 72 Knb1 MediumFast 2025-12-21 19:37:57 UTC View
🎄 SkG@Home 📡🌐 (SkGH) -2.036s
Before 		-103.0 dBm -12.25 dB 2 f5 SPK3 , RPT4 MediumFast 2025-12-21 19:37:57 UTC View
ETH Goose (ET03) -1.595s
Before 		-31.0 dBm 10.50 dB 2 41 ET01 MediumFast 2025-12-21 19:37:58 UTC View
Venturada2 🗼🌞 (Vb2) -0.690s
Before 		-97.0 dBm -0.75 dB 4 f5 RPT4 MediumFast 2025-12-21 19:37:59 UTC View
Wake Up, Neo...📡 (NEO) -0.687s
Before 		-97.0 dBm -7.50 dB 4 f5 RPT4 MediumFast 2025-12-21 19:37:59 UTC View
Aldinra_1640_🗼_🌐 (AldB) -0.378s
Before 		-114.0 dBm -6.75 dB 4 f5 RPT4 MediumFast 2025-12-21 19:37:59 UTC View
Rodashtastic🗼🌐 (RDSt) -0.153s
Before 		-115.0 dBm -5.50 dB 4 e8 GRN1 MediumFast 2025-12-21 19:37:59 UTC View
Varela Bot 🏡🤖 (🤖) +0.268s
After 		-81.0 dBm 9.00 dB 4 1c 🏡 MediumFast 2025-12-21 19:38:00 UTC View
Meshtastic b2b4📡🌐 (b2b4) +0.323s
After 		-111.0 dBm -8.50 dB 4 2d SkyB MediumFast 2025-12-21 19:38:00 UTC View
Karabanchel_Baldur (KarB) +0.527s
After 		-101.0 dBm -7.25 dB 4 e6 a9e6 MediumFast 2025-12-21 19:38:00 UTC View
Skynet (Sky) +0.585s
After 		-48.0 dBm 10.50 dB 4 2d SkyB MediumFast 2025-12-21 19:38:00 UTC View
tizon (Sylv) +0.590s
After 		-117.0 dBm -9.50 dB 4 2d SkyB MediumFast 2025-12-21 19:38:00 UTC View
🤖 Nicolas Cage 🌐 (Cage) +0.616s
After 		-68.0 dBm 10.75 dB 4 2d SkyB MediumFast 2025-12-21 19:38:00 UTC View
Otto_Base_2 (Ott2) +25.190s
After 		-50.0 dBm 10.25 dB 4 2d SkyB MediumFast 2025-12-21 19:38:25 UTC View
15

Total Receptions

15

Unique Gateways