Packet #17801156 Success
POSITION_APP packet from Meshtastic 1cd3 (1cd3) to !ffffffff
45
Total Receptions
1
Unique Gateways
0
Hop Count
36
Payload Bytes
Packet Information
| Database ID: | 17801156 |
|---|---|
| Mesh Packet ID: |
0x29402256
Used for correlation across gateways |
| Timestamp: | 2026-03-27 09:55:27 UTC |
| From Node: | Meshtastic 1cd3 (1cd3) |
| To Node: | !ffffffff (ffff) |
| Success: | Processed |
| Protocol: |
POSITION_APP
Port: 3 |
| Gateway: | Meshtastic b018 (b018) |
|---|---|
| Channel: | MediumFast |
| RSSI: | -33 dBm |
| SNR: | 7.5 dBm |
| Hop Info: |
0/7 hops
Start: 7, Limit: 7 |
| Relay Node: |
d3
1cd3
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: | 46.412595° |
|---|---|
| Longitude: | -72.522138° |
| Altitude: | 38 m |
| Satellites: | 8 |
| Precision: | 14 bits |
Raw Packet Analysis
Complete field breakdown and MQTT privacy/exposure analysisPacket Structure
MQTT Packet Flow:
ServiceEnvelope (MQTT layer) → MeshPacket (Mesh layer) → Decoded Payload (Application data)
| Total Size: | 36 bytes |
|---|---|
| Gateway: | !db51b018 |
| Channel: | MediumFast |
| Payload Type: | POSITION_APP |
| Hop Count: | Unknown / 7 |
Privacy Summary
Exposure Level:
Broadcast
Broadcast
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: MediumFast
+ 3 more...
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: MediumFast
+ 3 more...
Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 1 more...
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 1 more...
MQTT ServiceEnvelope Fields
MQTT ServiceEnvelope contains the MeshPacket plus routing metadata
| Field | Value |
|---|---|
gateway_id |
!db51b018
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
| Field | Value | Type |
|---|---|---|
from |
4164623571
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 |
7
Remaining hops allowed |
uint32 |
hop_start |
7
Initial hop limit |
uint32 |
hops_taken |
0
Calculated: hop_start - hop_limit |
derived |
rx_rssi |
-33.0 dBm
Signal strength at gateway |
int32 |
rx_snr |
7.50 dB
Signal quality at gateway |
float |
rx_time |
1774605326
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 |
211
Relay node ID |
uint32 |
tx_after |
Not set | uint32 |
timestamp |
1774605327.6766217
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: ~1500.0m 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: | !db51b018 |
| Position Precision: | 14 bits (~1500.0m accuracy) |
| Position precision meters: | 1500.0 |
| Zero Hop Policy: |
Enabled
Direct gateway connection |
| Signal Metrics: |
RSSI: -33.0 dBm SNR: 7.50 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": 46.4125952,
"longitude": -72.5221376,
"altitude": 38,
"sats_in_view": 8,
"precision_bits": 14
}
Complete Protobuf Decode (JSON)
{
"service_envelope": {
"gateway_id": "!db51b018",
"channel_id": "MediumFast",
"packet": "MeshPacket (see mesh_packet below)"
},
"mesh_packet": {
"from": 4164623571,
"to": 4294967295,
"id": 692068950,
"rx_time": 1774605326,
"rx_snr": 7.5,
"rx_rssi": -33,
"hop_limit": 7,
"hop_start": 7,
"via_mqtt": false,
"want_ack": false,
"priority": 0,
"delayed": 0,
"channel_index": null,
"pki_encrypted": false,
"next_hop": 0,
"relay_node": 211,
"tx_after": 0,
"decoded": {
"portnum": 3,
"payload": "0d0000aa1b150000c6d4182625dd53c669280258b70178008001a08f9409980108b8010e",
"want_response": null,
"dest": null,
"source": null,
"request_id": null,
"reply_id": null,
"emoji": null,
"parsed_payload": {
"latitude_i": 464125952,
"longitude_i": -725221376,
"altitude": 38,
"time": 1774605277,
"location_source": "LOC_INTERNAL",
"PDOP": 183,
"ground_speed": 0,
"ground_track": 19204000,
"sats_in_view": 8,
"precision_bits": 14,
"type": "protobuf",
"portnum": "POSITION_APP",
"message_class": "Position"
}
}
}
}
Raw Packet Data (36 bytes)
0d0000aa1b150000c6d4182625dd53c669280258b70178008001a08f9409980108b8010e
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 packetCorrelation: Using Mesh Packet ID
Reception Locations
Loading...
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 |
|---|---|---|---|---|---|---|---|---|
| Meshtastic b018 (b018) Primary |
0.000s
Reference |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
MediumFast | 2026-03-27 09:55:27 UTC | Current |
| Meshtastic b018 (b018) |
-0.248s
Before |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
LongFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
-0.217s
Before |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
LongFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
-0.197s
Before |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
LongFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
-0.179s
Before |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
LongFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
-0.161s
Before |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
LongFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
-0.143s
Before |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
LongFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
-0.133s
Before |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
LongFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
-0.121s
Before |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
LongFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
-0.109s
Before |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
LongFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
-0.097s
Before |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
LongFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
-0.079s
Before |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
LongFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
-0.068s
Before |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
MediumFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
-0.056s
Before |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
MediumFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
-0.044s
Before |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
MediumFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
-0.033s
Before |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
MediumFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
-0.022s
Before |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
MediumFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
-0.011s
Before |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
MediumFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
+0.011s
After |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
MediumFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
+0.022s
After |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
MediumFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
+0.032s
After |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
MediumFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
+0.043s
After |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
MediumFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
+0.053s
After |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
ShortFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
+0.065s
After |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
ShortFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
+0.077s
After |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
ShortFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
+0.089s
After |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
ShortFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
+0.101s
After |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
ShortFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
+0.113s
After |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
ShortFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
+0.125s
After |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
ShortFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
+0.137s
After |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
ShortFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
+0.148s
After |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
ShortFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
+0.157s
After |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
ShortFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
+0.184s
After |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
ShortFast | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
+0.195s
After |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
ShortTurbo | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
+0.205s
After |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
ShortTurbo | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
+0.216s
After |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
ShortTurbo | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
+0.227s
After |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
ShortTurbo | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
+0.238s
After |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
ShortTurbo | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
+0.250s
After |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
ShortTurbo | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
+0.262s
After |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
ShortTurbo | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
+0.274s
After |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
ShortTurbo | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
+0.286s
After |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
ShortTurbo | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
+0.298s
After |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
ShortTurbo | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
+0.310s
After |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
ShortTurbo | 2026-03-27 09:55:27 UTC | View |
| Meshtastic b018 (b018) |
+0.321s
After |
-33.0 dBm | 7.50 dB | 0 |
d3
1cd3
|
LongFast | 2026-03-27 09:55:27 UTC | View |
45
Total Receptions
1
Unique Gateways