Packet #3786399 Success

POSITION_APP packet from CV-DA-CLM-868 (CVDA) to !ffffffff

20
Total Receptions
6
Unique Gateways
3
Hop Count
34
Payload Bytes
Packet Information
Database ID: 3786399
Mesh Packet ID: 0xa213bdc0
Used for correlation across gateways
Timestamp: 2025-07-15 08:37:19 UTC
From Node: CV-DA-CLM-868 (CVDA)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: XDCP-CLM-8 (XDC2)
Channel: LongFast
RSSI: -126 dBm
SNR: -17.75 dBm
Hop Info: 3/5 hops
Start: 5, Limit: 2
Payload Data
Protocol: POSITION_APP
Size: 34 bytes
Decoded: Yes
Decoded Data:
Latitude:41.602253°
Longitude:2.070938°
Altitude:321 m
Satellites:7
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:34 bytes
Gateway:!433e57bc
Channel:LongFast
Payload Type:POSITION_APP
Hop Count:3 / 5
Privacy Summary
Exposure Level:
Broadcast
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked
+ 1 more...
Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 3 more...
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !433e57bc
Node ID format
channel_id LongFast
Default public channel
packet MeshPacket (34 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 1554660803
Source node ID 		uint32
to 4294967295 (Broadcast)
Visible to all nodes 		uint32
decoded.portnum 3
POSITION_APP 		enum
decoded.payload_length 34 bytes size
hop_limit 2
Remaining hops allowed 		uint32
hop_start 5
Initial hop limit 		uint32
hops_taken 3
Calculated: hop_start - hop_limit 		derived
rx_rssi -126.0 dBm
Signal strength at gateway 		int32
rx_snr -17.75 dB
Signal quality at gateway 		float
rx_time 1752567105
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 222
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1752568639.750308
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)
  • ✓ Gateway node ID tracked
  • ✓ Reduced position precision: ~2900.0m accuracy
Exposure Risks:
  • ⚠ Visible to all nodes on channel
  • ⚠ Default channel - no encryption
  • ⚠ Packet visible to MQTT subscribers
  • ⚠ Multi-hop path visible (3 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !433e57bc
Position Precision: 13 bits (~2900.0m accuracy)
Position precision meters: 2900.0
Signal Metrics: RSSI: -126.0 dBm
SNR: -17.75 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:POSITION_APP
Size:34 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "latitude": 41.6022528, "longitude": 2.0709376, "altitude": 321, "sats_in_view": 7, "precision_bits": 13 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!433e57bc", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1554660803, "to": 4294967295, "id": 2719202752, "rx_time": 1752567105, "rx_snr": -17.75, "rx_rssi": -126, "hop_limit": 2, "hop_start": 5, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 222, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d0000cc181500003c0118c102254b0d7668280258d3017801800100980107b8010d", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 416022528, "longitude_i": 20709376, "altitude": 321, "time": 1752567115, "location_source": "LOC_INTERNAL", "PDOP": 211, "ground_speed": 1, "ground_track": 0, "sats_in_view": 7, "precision_bits": 13, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (34 bytes)
0d0000cc181500003c0118c102254b0d7668280258d3017801800100980107b8010d
Hex Analysis:
Size:34 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
XDCP-CLM-8 (XDC2) Primary 0.000s
Reference 		-126.0 dBm -17.75 dB 3 LongFast 2025-07-15 08:37:19 Current
CV-Oriol-GW-8 📡 (CVO2) -1535.154s
Before 		-104.0 dBm 3.50 dB 0 LongFast 2025-07-15 08:11:44 View
Cardedeu-GW-868 (GC) -1532.473s
Before 		-136.0 dBm -16.25 dB 2 LongFast 2025-07-15 08:11:47 View
MontcadaCentro-CL-868🗼🌐 (d9e8) -1531.545s
Before 		-112.0 dBm -13.00 dB 3 LongFast 2025-07-15 08:11:48 View
Rubí - FCS (FCS) -1529.862s
Before 		-128.0 dBm -18.75 dB 3 LongFast 2025-07-15 08:11:49 View
EB3FWC-Girona📡-GW-868 (EB3F) -1529.780s
Before 		-88.0 dBm 2.25 dB 3 LongFast 2025-07-15 08:11:49 View
XDCP-CLM-8 (XDC2) -77.042s
Before 		-126.0 dBm -17.75 dB 3 LongFast 2025-07-15 08:36:02 View
XDCP-CLM-8 (XDC2) -49.020s
Before 		-126.0 dBm -17.75 dB 3 LongFast 2025-07-15 08:36:30 View
XDCP-CLM-8 (XDC2) -27.018s
Before 		-126.0 dBm -17.75 dB 3 LongFast 2025-07-15 08:36:52 View
XDCP-CLM-8 (XDC2) +27.014s
After 		-126.0 dBm -17.75 dB 3 LongFast 2025-07-15 08:37:46 View
XDCP-CLM-8 (XDC2) +54.030s
After 		-126.0 dBm -17.75 dB 3 LongFast 2025-07-15 08:38:13 View
XDCP-CLM-8 (XDC2) +85.043s
After 		-126.0 dBm -17.75 dB 3 LongFast 2025-07-15 08:38:44 View
XDCP-CLM-8 (XDC2) +112.053s
After 		-126.0 dBm -17.75 dB 3 LongFast 2025-07-15 08:39:11 View
XDCP-CLM-8 (XDC2) +139.068s
After 		-126.0 dBm -17.75 dB 3 LongFast 2025-07-15 08:39:38 View
XDCP-CLM-8 (XDC2) +166.089s
After 		-126.0 dBm -17.75 dB 3 LongFast 2025-07-15 08:40:05 View
XDCP-CLM-8 (XDC2) +193.103s
After 		-126.0 dBm -17.75 dB 3 LongFast 2025-07-15 08:40:32 View
XDCP-CLM-8 (XDC2) +220.117s
After 		-126.0 dBm -17.75 dB 3 LongFast 2025-07-15 08:40:59 View
XDCP-CLM-8 (XDC2) +247.127s
After 		-126.0 dBm -17.75 dB 3 LongFast 2025-07-15 08:41:26 View
XDCP-CLM-8 (XDC2) +275.137s
After 		-126.0 dBm -17.75 dB 3 LongFast 2025-07-15 08:41:54 View
XDCP-CLM-8 (XDC2) +299.151s
After 		-126.0 dBm -17.75 dB 3 LongFast 2025-07-15 08:42:18 View
20

Total Receptions

6

Unique Gateways