Packet #28577558 Success

POSITION_APP packet from Kala_CLM (Kala) to !ffffffff

18
Total Receptions
18
Unique Gateways
3
Hop Count
36
Payload Bytes
Packet Information
Database ID: 28577558
Mesh Packet ID: 0xc9868656
Used for correlation across gateways
Timestamp: 2025-12-19 01:52:03 UTC
From Node: Kala_CLM (Kala)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: Karabanchel_Baldur (KarB)
Channel: MediumFast
RSSI: -92 dBm
SNR: 4.25 dBm
Hop Info: 3/7 hops
Start: 7, Limit: 4
Relay Node: 2d SkyB
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: 36 bytes
Decoded: Yes
Decoded Data:
Latitude:40.311194°
Longitude:-3.440640°
Altitude:78 m
Satellites:6
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:36 bytes
Gateway:!13280088
Channel:MediumFast
Payload Type:POSITION_APP
Hop Count:3 / 7
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 !13280088
Node ID format
channel_id MediumFast
packet MeshPacket (36 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 36 bytes size
hop_limit 4
Remaining hops allowed 		uint32
hop_start 7
Initial hop limit 		uint32
hops_taken 3
Calculated: hop_start - hop_limit 		derived
rx_rssi -92.0 dBm
Signal strength at gateway 		int32
rx_snr 4.25 dB
Signal quality at gateway 		float
rx_time 1766109122
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 45
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1766109123.3218558
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: !13280088
Position Precision: 15 bits (~729.0m accuracy)
Position precision meters: 729.0
Signal Metrics: RSSI: -92.0 dBm
SNR: 4.25 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:POSITION_APP
Size:36 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "latitude": 40.3111936, "longitude": -3.44064, "altitude": 78, "sats_in_view": 6, "precision_bits": 15 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!13280088", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 3877556925, "to": 4294967295, "id": 3381036630, "rx_time": 1766109122, "rx_snr": 4.25, "rx_rssi": -92, "hop_limit": 4, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 45, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00000718150000f3fd184e25bcaf4469280258ef0178008001d0808201980106b8010f", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 403111936, "longitude_i": -34406400, "altitude": 78, "time": 1766109116, "location_source": "LOC_INTERNAL", "PDOP": 239, "ground_speed": 0, "ground_track": 2130000, "sats_in_view": 6, "precision_bits": 15, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (36 bytes)
0d00000718150000f3fd184e25bcaf4469280258ef0178008001d0808201980106b8010f
Hex Analysis:
Size:36 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
Karabanchel_Baldur (KarB) Primary 0.000s
Reference 		-92.0 dBm 4.25 dB 3 2d SkyB MediumFast 2025-12-19 01:52:03 UTC Current
JAGO1_Cañaveral (JAGO) -0.740s
Before 		-120.0 dBm -12.25 dB 2 f4 VSF MediumFast 2025-12-19 01:52:02 UTC View
Ocumare Norte🗼🌐 (RRN) -0.735s
Before 		-102.0 dBm -7.50 dB 2 f4 VSF MediumFast 2025-12-19 01:52:02 UTC View
GRN1-Base🗼🌐 🔋 (GRN1) -0.731s
Before 		-110.0 dBm -10.25 dB 1 fc Anu2 MediumFast 2025-12-19 01:52:02 UTC View
XiaoWatt c4c8 🌐🔌 (c4c8) -0.662s
Before 		-84.0 dBm 5.75 dB 2 f4 VSF MediumFast 2025-12-19 01:52:02 UTC View
[samsepi0l] 📡🌐 (tlg0) -0.063s
Before 		-86.0 dBm 5.50 dB 1 fc 74fc , Anu2 MediumFast 2025-12-19 01:52:03 UTC View
Meshtastic b2b4📡🌐 (b2b4) -0.003s
Before 		-106.0 dBm -2.25 dB 3 2d SkyB MediumFast 2025-12-19 01:52:03 UTC View
Pozuelo (POZ1) +0.043s
After 		-93.0 dBm -13.50 dB 2 f4 VSF MediumFast 2025-12-19 01:52:03 UTC View
🤖 Nicolas Cage 🌐 (Cage) +0.287s
After 		-69.0 dBm 11.00 dB 3 2d SkyB MediumFast 2025-12-19 01:52:03 UTC View
Villarejo01 (VIL1) +0.453s
After 		-118.0 dBm -13.75 dB 3 61 TO1 MediumFast 2025-12-19 01:52:03 UTC View
Eagle’s Nest (EAGL) +0.559s
After 		-105.0 dBm 3.75 dB 3 a4 Raq1 MediumFast 2025-12-19 01:52:03 UTC View
ETH Goose (ET03) +1.183s
After 		-27.0 dBm 11.00 dB 4 41 ET01 MediumFast 2025-12-19 01:52:04 UTC View
PXT_Home (PXT1) +1.299s
After 		-93.0 dBm 9.50 dB 4 fd BAS2 MediumFast 2025-12-19 01:52:04 UTC View
Mec Rocket Meco (MRM) +1.614s
After 		-109.0 dBm -7.25 dB 4 a8 CALB MediumFast 2025-12-19 01:52:04 UTC View
Quixote_JS8_5🗼🌐 (QXT5) +1.885s
After 		-114.0 dBm -4.75 dB 5 - MediumFast 2025-12-19 01:52:05 UTC View
Quixote_JS8_7 (QXT7) +1.888s
After 		-18.0 dBm 11.25 dB 5 - MediumFast 2025-12-19 01:52:05 UTC View
Varela Bot 🏡🤖 (🤖) +1.963s
After 		-83.0 dBm 8.50 dB 4 1c 🏡 MediumFast 2025-12-19 01:52:05 UTC View
ETH Maverick (ET01) +2.715s
After 		-105.0 dBm -4.50 dB 3 61 TO1 MediumFast 2025-12-19 01:52:06 UTC View
18

Total Receptions

18

Unique Gateways