Packet #7639172 Success

POSITION_APP packet from Meshtastic cd2c (cd2c) to !ffffffff

35
Total Receptions
1
Unique Gateways
0
Hop Count
23
Payload Bytes
Packet Information
Database ID: 7639172
Mesh Packet ID: 0x8cc8e372
Used for correlation across gateways
Timestamp: 2025-08-22 13:34:53 UTC
From Node: Meshtastic cd2c (cd2c)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: OSenseGury_CT_868 (SGur)
Channel: Iberia
RSSI: -37 dBm
SNR: 11.0 dBm
Hop Info: 0/4 hops
Start: 4, Limit: 4
Payload Data
Protocol: POSITION_APP
Size: 23 bytes
Decoded: Yes
Decoded Data:
Latitude:38.980813°
Longitude:-3.381658°
Altitude:657 m
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:23 bytes
Gateway:!5048c06d
Channel:Iberia
Payload Type:POSITION_APP
Hop Count:Unknown / 4
Privacy Summary
Exposure Level:
Broadcast
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: Iberia
+ 3 more...
Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 1 more...
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !5048c06d
Node ID format
channel_id Iberia
packet MeshPacket (23 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 2697776428
Source node ID 		uint32
to 4294967295 (Broadcast)
Visible to all nodes 		uint32
decoded.portnum 3
POSITION_APP 		enum
decoded.payload_length 23 bytes size
hop_limit 4
Remaining hops allowed 		uint32
hop_start 4
Initial hop limit 		uint32
hops_taken 0
Calculated: hop_start - hop_limit 		derived
rx_rssi -37.0 dBm
Signal strength at gateway 		int32
rx_snr 11.00 dB
Signal quality at gateway 		float
rx_time 1755868983
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 44
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1755869693.5844367
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: Iberia
  • ✓ Gateway node ID tracked
  • ✓ Reduced position precision: ~2900.0m accuracy
  • ✓ Zero-hop: direct from source to MQTT gateway
Exposure Risks:
  • ⚠ Visible to all nodes on channel
  • ⚠ Packet visible to MQTT subscribers
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !5048c06d
Position Precision: 13 bits (~2900.0m accuracy)
Position precision meters: 2900.0
Zero Hop Policy: Enabled
Direct gateway connection
Signal Metrics: RSSI: -37.0 dBm
SNR: 11.00 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:POSITION_APP
Size:23 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "latitude": 38.9808128, "longitude": -3.3816576, "altitude": 657, "sats_in_view": null, "precision_bits": 13 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!5048c06d", "channel_id": "Iberia", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2697776428, "to": 4294967295, "id": 2361975666, "rx_time": 1755868983, "rx_snr": 11.0, "rx_rssi": -37, "hop_limit": 4, "hop_start": 4, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 44, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00003c17150000fcfd18910528037800800100b8010d", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 389808128, "longitude_i": -33816576, "altitude": 657, "location_source": "LOC_EXTERNAL", "ground_speed": 0, "ground_track": 0, "precision_bits": 13, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (23 bytes)
0d00003c17150000fcfd18910528037800800100b8010d
Hex Analysis:
Size:23 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
OSenseGury_CT_868 (SGur) Primary 0.000s
Reference 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:34:53 Current
OSenseGury_CT_868 (SGur) -210.476s
Before 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:31:23 View
OSenseGury_CT_868 (SGur) -154.409s
Before 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:32:19 View
OSenseGury_CT_868 (SGur) -124.318s
Before 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:32:49 View
OSenseGury_CT_868 (SGur) -95.267s
Before 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:33:18 View
OSenseGury_CT_868 (SGur) -66.265s
Before 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:33:47 View
OSenseGury_CT_868 (SGur) -45.204s
Before 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:34:08 View
OSenseGury_CT_868 (SGur) -41.200s
Before 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:34:12 View
OSenseGury_CT_868 (SGur) -37.148s
Before 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:34:16 View
OSenseGury_CT_868 (SGur) -33.138s
Before 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:34:20 View
OSenseGury_CT_868 (SGur) -29.111s
Before 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:34:24 View
OSenseGury_CT_868 (SGur) -25.098s
Before 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:34:28 View
OSenseGury_CT_868 (SGur) -20.081s
Before 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:34:33 View
OSenseGury_CT_868 (SGur) -16.069s
Before 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:34:37 View
OSenseGury_CT_868 (SGur) -12.061s
Before 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:34:41 View
OSenseGury_CT_868 (SGur) -8.048s
Before 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:34:45 View
OSenseGury_CT_868 (SGur) -7.040s
Before 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:34:46 View
OSenseGury_CT_868 (SGur) -6.043s
Before 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:34:47 View
OSenseGury_CT_868 (SGur) -5.023s
Before 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:34:48 View
OSenseGury_CT_868 (SGur) -4.037s
Before 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:34:49 View
OSenseGury_CT_868 (SGur) -2.033s
Before 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:34:51 View
OSenseGury_CT_868 (SGur) -1.009s
Before 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:34:52 View
OSenseGury_CT_868 (SGur) +0.996s
After 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:34:54 View
OSenseGury_CT_868 (SGur) +1.998s
After 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:34:55 View
OSenseGury_CT_868 (SGur) +4.007s
After 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:34:57 View
OSenseGury_CT_868 (SGur) +5.016s
After 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:34:58 View
OSenseGury_CT_868 (SGur) +7.009s
After 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:35:00 View
OSenseGury_CT_868 (SGur) +8.036s
After 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:35:01 View
OSenseGury_CT_868 (SGur) +9.022s
After 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:35:02 View
OSenseGury_CT_868 (SGur) +11.047s
After 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:35:04 View
OSenseGury_CT_868 (SGur) +16.127s
After 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:35:09 View
OSenseGury_CT_868 (SGur) +17.128s
After 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:35:10 View
OSenseGury_CT_868 (SGur) +22.146s
After 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:35:15 View
OSenseGury_CT_868 (SGur) +24.154s
After 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:35:17 View
OSenseGury_CT_868 (SGur) +33.161s
After 		-37.0 dBm 11.00 dB 0 Iberia 2025-08-22 13:35:26 View
35

Total Receptions

1

Unique Gateways