Packet #27404536 Success

POSITION_APP packet from ShaiCOM 2 (S2) to !ffffffff

13
Total Receptions
13
Unique Gateways
4
Hop Count
28
Payload Bytes
Packet Information
Database ID: 27404536
Mesh Packet ID: 0x6d097a45
Used for correlation across gateways
Timestamp: 2025-12-13 14:33:24 UTC
From Node: ShaiCOM 2 (S2)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: tizon (Sylv)
Channel: MediumFast
RSSI: Unknown
SNR: Unknown
Hop Info: 4/4 hops
Start: 4, Limit: 0
Relay Node: 0c Sylv
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: 28 bytes
Decoded: Yes
Decoded Data:
Latitude:40.322662°
Longitude:-3.845325°
Altitude:615 m
Precision:17 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:!9e7809e8
Channel:MediumFast
Payload Type:POSITION_APP
Hop Count:4 / 4
Privacy Summary
Exposure Level:
Broadcast
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: MediumFast
+ 1 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 !9e7809e8
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 3680039040
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 4
Initial hop limit 		uint32
hops_taken 4
Calculated: hop_start - hop_limit 		derived
rx_rssi Not set int32
rx_snr Not set float
rx_time 1765636403
Receive timestamp 		fixed32
via_mqtt False
Direct LoRa transmission 		bool
want_ack False
No ACK requested 		bool
priority 64
Packet priority level 		enum
delayed Not set enum
channel Not set uint32
pki_encrypted False
Standard encryption 		bool
next_hop Not set uint32
relay_node 12
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1765636404.510964
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
Exposure Risks:
  • ⚠ Visible to all nodes on channel
  • ⚠ Packet visible to MQTT subscribers
  • ⚠ Full GPS precision shared
  • ⚠ Multi-hop path visible (4 hops)
MQTT-Specific Fields
Gateway ID: !9e7809e8
Position Precision: 17 bits (~182.0m accuracy)
Position precision meters: 182.0
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": 40.3226624, "longitude": -3.8453248, "altitude": 615, "sats_in_view": null, "precision_bits": 17 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!9e7809e8", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3680039040, "to": 4294967295, "id": 1829337669, "rx_time": 1765636403, "rx_snr": 0.0, "rx_rssi": 0, "hop_limit": 0, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 64, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 12, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00c00818150040b5fd18e7042530793d692803780e800156b80111", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 403226624, "longitude_i": -38453248, "altitude": 615, "time": 1765636400, "location_source": "LOC_EXTERNAL", "ground_speed": 14, "ground_track": 86, "precision_bits": 17, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (28 bytes)
0d00c00818150040b5fd18e7042530793d692803780e800156b80111
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
tizon (Sylv) Primary 0.000s
Reference 		Unknown Unknown 4 0c Sylv MediumFast 2025-12-13 14:33:24 UTC Current
🎄 SkG@Home 📡🌐 (SkGH) -1.832s
Before 		-83.0 dBm -12.75 dB 1 56 8d56 , 3d56 MediumFast 2025-12-13 14:33:22 UTC View
PXT_Home (PXT1) -0.942s
Before 		-115.0 dBm -4.75 dB 2 48 mfms MediumFast 2025-12-13 14:33:23 UTC View
Venturada2 🗼🌞 (Vb2) -0.857s
Before 		-90.0 dBm 7.50 dB 3 61 TO1 MediumFast 2025-12-13 14:33:23 UTC View
Fenix (FENX) -0.505s
Before 		-120.0 dBm -12.50 dB 3 61 TO1 MediumFast 2025-12-13 14:33:24 UTC View
XiaoWatt c4c8 🌐🔌 (c4c8) -0.470s
Before 		-79.0 dBm 8.50 dB 4 b0 Vbm , Vb2 MediumFast 2025-12-13 14:33:24 UTC View
[samsepi0l] 📡🌐 (tlg0) -0.255s
Before 		-97.0 dBm -4.00 dB 4 - MediumFast 2025-12-13 14:33:24 UTC View
GRN1-Base🗼🌐 🔋 (GRN1) -0.178s
Before 		-98.0 dBm 1.50 dB 4 b0 Vbm , Vb2 MediumFast 2025-12-13 14:33:24 UTC View
Eagle’s Nest (EAGL) -0.060s
Before 		-114.0 dBm -5.00 dB 4 74 MediumFast 2025-12-13 14:33:24 UTC View
Karabanchel_Baldur (KarB) +0.111s
After 		-83.0 dBm 8.75 dB 4 24 vid MediumFast 2025-12-13 14:33:24 UTC View
Meshtastic b2b4📡🌐 (b2b4) +0.113s
After 		-111.0 dBm -10.00 dB 4 24 vid MediumFast 2025-12-13 14:33:24 UTC View
P3 iGate 🏠🌐 (P3N2) +0.673s
After 		-35.0 dBm 11.50 dB 4 25 P3N1 MediumFast 2025-12-13 14:33:25 UTC View
Getafe ☀️ (GTF) +1.578s
After 		-124.0 dBm -14.75 dB 4 24 vid MediumFast 2025-12-13 14:33:26 UTC View
13

Total Receptions

13

Unique Gateways