Packet #27772570 Success

POSITION_APP packet from Kala_CLM (Kala) to !ffffffff

19
Total Receptions
19
Unique Gateways
4
Hop Count
37
Payload Bytes
Packet Information
Database ID: 27772570
Mesh Packet ID: 0xa583ad0f
Used for correlation across gateways
Timestamp: 2025-12-15 07:40:31 UTC
From Node: Kala_CLM (Kala)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: Ocumare Norte🗼🌐 (RRN)
Channel: MediumFast
RSSI: -105 dBm
SNR: -8.75 dBm
Hop Info: 4/5 hops
Start: 5, Limit: 1
Relay Node: b0 Vbm , Vb2
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: 37 bytes
Decoded: Yes
Decoded Data:
Latitude:40.311194°
Longitude:-3.440640°
Altitude:584 m
Satellites:5
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:37 bytes
Gateway:!b2a7c8d0
Channel:MediumFast
Payload Type:POSITION_APP
Hop Count:4 / 5
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 !b2a7c8d0
Node ID format
channel_id MediumFast
packet MeshPacket (37 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 3877556925
Source node ID 		uint32
to 4294967295 (Broadcast)
Visible to all nodes 		uint32
decoded.portnum 3
POSITION_APP 		enum
decoded.payload_length 37 bytes size
hop_limit 1
Remaining hops allowed 		uint32
hop_start 5
Initial hop limit 		uint32
hops_taken 4
Calculated: hop_start - hop_limit 		derived
rx_rssi -105.0 dBm
Signal strength at gateway 		int32
rx_snr -8.75 dB
Signal quality at gateway 		float
rx_time 1765784430
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 176
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1765784431.4948075
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 (4 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !b2a7c8d0
Position Precision: 15 bits (~729.0m accuracy)
Position precision meters: 729.0
Signal Metrics: RSSI: -105.0 dBm
SNR: -8.75 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:POSITION_APP
Size:37 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "latitude": 40.3111936, "longitude": -3.44064, "altitude": 584, "sats_in_view": 5, "precision_bits": 15 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!b2a7c8d0", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3877556925, "to": 4294967295, "id": 2776870159, "rx_time": 1765784430, "rx_snr": -8.75, "rx_rssi": -105, "hop_limit": 1, "hop_start": 5, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 176, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00000718150000f3fd18c804255fbb3f69280258b60278028001a0f3b40f980105b8010f", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 403111936, "longitude_i": -34406400, "altitude": 584, "time": 1765784415, "location_source": "LOC_INTERNAL", "PDOP": 310, "ground_speed": 2, "ground_track": 32324000, "sats_in_view": 5, "precision_bits": 15, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (37 bytes)
0d00000718150000f3fd18c804255fbb3f69280258b60278028001a0f3b40f980105b8010f
Hex Analysis:
Size:37 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
Ocumare Norte🗼🌐 (RRN) Primary 0.000s
Reference 		-105.0 dBm -8.75 dB 4 b0 Vbm , Vb2 MediumFast 2025-12-15 07:40:31 UTC Current
GRN1-Base🗼🌐 🔋 (GRN1) -0.695s
Before 		-106.0 dBm -8.25 dB 2 - MediumFast 2025-12-15 07:40:30 UTC View
Venturada2 🗼🌞 (Vb2) -0.532s
Before 		-74.0 dBm 7.75 dB 3 10 Vb MediumFast 2025-12-15 07:40:30 UTC View
Meshtastic b2b4📡🌐 (b2b4) -0.493s
Before 		-108.0 dBm -5.25 dB 3 2d SkyB MediumFast 2025-12-15 07:40:31 UTC View
tizon (Sylv) -0.163s
Before 		-104.0 dBm 2.50 dB 3 2d SkyB MediumFast 2025-12-15 07:40:31 UTC View
Fenix (FENX) -0.157s
Before 		-110.0 dBm -4.25 dB 3 2d SkyB MediumFast 2025-12-15 07:40:31 UTC View
Getafe ☀️ (GTF) -0.118s
Before 		-122.0 dBm -13.00 dB 3 2d SkyB MediumFast 2025-12-15 07:40:31 UTC View
JAGO1_Cañaveral (JAGO) +0.006s
After 		-123.0 dBm -14.50 dB 4 b0 Vbm , PUPM , Vb2 MediumFast 2025-12-15 07:40:31 UTC View
NodeJPL6 (JPL6) +0.012s
After 		-97.0 dBm -5.50 dB 4 b0 Vb2 MediumFast 2025-12-15 07:40:31 UTC View
XiaoWatt c4c8 🌐🔌 (c4c8) +0.033s
After 		-79.0 dBm 8.50 dB 4 b0 Vbm , Vb2 MediumFast 2025-12-15 07:40:31 UTC View
Meshtastic 1760 (1760) +0.342s
After 		-132.0 dBm -13.00 dB 4 b0 Vb2 MediumFast 2025-12-15 07:40:31 UTC View
Meshtastic 18a4 (18a4) +0.966s
After 		-59.0 dBm 13.00 dB 5 60 1760 MediumFast 2025-12-15 07:40:32 UTC View
ETH Goose (ET03) +1.085s
After 		-113.0 dBm -9.50 dB 4 72 Knb1 MediumFast 2025-12-15 07:40:32 UTC View
P3 iGate 🏠🌐 (P3N2) +1.314s
After 		-38.0 dBm 11.00 dB 5 25 P3N1 MediumFast 2025-12-15 07:40:32 UTC View
🎄 SkG@Home 📡🌐 (SkGH) +1.492s
After 		-85.0 dBm -14.75 dB 5 56 8d56 , 3d56 MediumFast 2025-12-15 07:40:32 UTC View
Eagle’s Nest (EAGL) +1.522s
After 		-114.0 dBm -4.75 dB 5 74 MediumFast 2025-12-15 07:40:33 UTC View
PXT_Home (PXT1) +2.230s
After 		-101.0 dBm 4.00 dB 5 fd BAS2 MediumFast 2025-12-15 07:40:33 UTC View
Zion 🗼 (Zion) +2.264s
After 		-113.0 dBm -12.75 dB 5 fd BAS2 MediumFast 2025-12-15 07:40:33 UTC View
Skynet (Sky) +97.597s
After 		-38.0 dBm 11.00 dB 3 2d SkyB MediumFast 2025-12-15 07:42:09 UTC View
19

Total Receptions

19

Unique Gateways