Packet #18159796 Success
POSITION_APP packet from VE3LJU2_base (LJU2) to !ffffffff
46
Total Receptions
2
Unique Gateways
2
Hop Count
27
Payload Bytes
Packet Information
| Database ID: | 18159796 |
|---|---|
| Mesh Packet ID: |
0x4eed019b
Used for correlation across gateways |
| Timestamp: | 2026-03-28 05:43:14 UTC |
| From Node: | VE3LJU2_base (LJU2) |
| To Node: | !ffffffff (ffff) |
| Success: | Processed |
| Protocol: |
POSITION_APP
Port: 3 |
| Gateway: | AH001 (0d74) |
|---|---|
| Channel: | MediumFast |
| RSSI: | -123 dBm |
| SNR: | -14.25 dBm |
| Hop Info: |
2/5 hops
Start: 5, Limit: 3 |
| Relay Node: |
38
Last byte of the last hop that relayed this packet |
Payload Data
Protocol: POSITION_APP
Size: 27 bytes
Decoded:
Yes
Decoded Data:
| Latitude: | 43.227546° |
|---|---|
| Longitude: | -79.875277° |
| Altitude: | 120 m |
| Precision: | 13 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: | 27 bytes |
|---|---|
| Gateway: | !b03d0d74 |
| Channel: | MediumFast |
| Payload Type: | POSITION_APP |
| Hop Count: | 2 / 5 |
Privacy Summary
Exposure Level:
Broadcast
Broadcast
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: MediumFast
+ 2 more...
✓ 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...
⚠ Visible to all nodes on channel
⚠ Packet visible to MQTT subscribers
+ 2 more...
MQTT ServiceEnvelope Fields
MQTT ServiceEnvelope contains the MeshPacket plus routing metadata
| Field | Value |
|---|---|
gateway_id |
!b03d0d74
Node ID format |
channel_id |
MediumFast
|
packet |
MeshPacket (27 bytes)
Contains the actual mesh network packet |
MeshPacket Fields
Core mesh packet with routing and payload information
| Field | Value | Type |
|---|---|---|
from |
181004372
Source node ID |
uint32 |
to |
4294967295 (Broadcast)
Visible to all nodes |
uint32 |
decoded.portnum |
3
POSITION_APP |
enum |
decoded.payload_length |
27 bytes
|
size |
hop_limit |
3
Remaining hops allowed |
uint32 |
hop_start |
5
Initial hop limit |
uint32 |
hops_taken |
2
Calculated: hop_start - hop_limit |
derived |
rx_rssi |
-123.0 dBm
Signal strength at gateway |
int32 |
rx_snr |
-14.25 dB
Signal quality at gateway |
float |
rx_time |
1774676593
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 |
56
Relay node ID |
uint32 |
tx_after |
Not set | uint32 |
timestamp |
1774676594.4641974
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: ~2900.0m accuracy
Exposure Risks:
- ⚠ Visible to all nodes on channel
- ⚠ Packet visible to MQTT subscribers
- ⚠ Multi-hop path visible (2 hops)
- ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
| Gateway ID: | !b03d0d74 |
| Position Precision: | 13 bits (~2900.0m accuracy) |
| Position precision meters: | 2900.0 |
| Signal Metrics: |
RSSI: -123.0 dBm SNR: -14.25 dB |
Complete Payload Analysis
Detailed breakdown of all payload fields and decoded data
Payload Metadata:
| Protocol: | POSITION_APP |
|---|---|
| Size: | 27 bytes |
| Decoded: | Yes |
Complete Payload Data (JSON):
{
"latitude": 43.2275456,
"longitude": -79.8752768,
"altitude": 120,
"sats_in_view": null,
"precision_bits": 13
}
Complete Protobuf Decode (JSON)
{
"service_envelope": {
"gateway_id": "!b03d0d74",
"channel_id": "MediumFast",
"packet": "MeshPacket (see mesh_packet below)"
},
"mesh_packet": {
"from": 181004372,
"to": 4294967295,
"id": 1324155291,
"rx_time": 1774676593,
"rx_snr": -14.25,
"rx_rssi": -123,
"hop_limit": 3,
"hop_start": 5,
"via_mqtt": false,
"want_ack": false,
"priority": 0,
"delayed": 0,
"channel_index": null,
"pki_encrypted": false,
"next_hop": 0,
"relay_node": 56,
"tx_after": 0,
"decoded": {
"portnum": 3,
"payload": "0d0000c41915000064d01878255e6ac76928017800800100b8010d",
"want_response": null,
"dest": null,
"source": null,
"request_id": null,
"reply_id": null,
"emoji": null,
"parsed_payload": {
"latitude_i": 432275456,
"longitude_i": -798752768,
"altitude": 120,
"time": 1774676574,
"location_source": "LOC_MANUAL",
"ground_speed": 0,
"ground_track": 0,
"precision_bits": 13,
"type": "protobuf",
"portnum": "POSITION_APP",
"message_class": "Position"
}
}
}
}
Raw Packet Data (27 bytes)
0d0000c41915000064d01878255e6ac76928017800800100b8010d
Hex Analysis:
| Size: | 27 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 |
|---|---|---|---|---|---|---|---|---|
| AH001 (0d74) Primary |
0.000s
Reference |
-123.0 dBm | -14.25 dB | 2 |
38
|
MediumFast | 2026-03-28 05:43:14 UTC | Current |
| AH001 (0d74) |
-0.203s
Before |
-123.0 dBm | -14.25 dB | 2 |
38
|
LongFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
-0.171s
Before |
-123.0 dBm | -14.25 dB | 2 |
38
|
LongFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
-0.159s
Before |
-123.0 dBm | -14.25 dB | 2 |
38
|
LongFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
-0.146s
Before |
-123.0 dBm | -14.25 dB | 2 |
38
|
LongFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
-0.132s
Before |
-123.0 dBm | -14.25 dB | 2 |
38
|
LongFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
-0.121s
Before |
-123.0 dBm | -14.25 dB | 2 |
38
|
LongFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
-0.109s
Before |
-123.0 dBm | -14.25 dB | 2 |
38
|
LongFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
-0.097s
Before |
-123.0 dBm | -14.25 dB | 2 |
38
|
LongFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
-0.086s
Before |
-123.0 dBm | -14.25 dB | 2 |
38
|
LongFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
-0.074s
Before |
-123.0 dBm | -14.25 dB | 2 |
38
|
LongFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
-0.062s
Before |
-123.0 dBm | -14.25 dB | 2 |
38
|
LongFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
-0.048s
Before |
-123.0 dBm | -14.25 dB | 2 |
38
|
MediumFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
-0.036s
Before |
-123.0 dBm | -14.25 dB | 2 |
38
|
MediumFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
-0.024s
Before |
-123.0 dBm | -14.25 dB | 2 |
38
|
MediumFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
-0.012s
Before |
-123.0 dBm | -14.25 dB | 2 |
38
|
MediumFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
+0.015s
After |
-123.0 dBm | -14.25 dB | 2 |
38
|
MediumFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
+0.026s
After |
-123.0 dBm | -14.25 dB | 2 |
38
|
MediumFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
+0.037s
After |
-123.0 dBm | -14.25 dB | 2 |
38
|
MediumFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
+0.050s
After |
-123.0 dBm | -14.25 dB | 2 |
38
|
MediumFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
+0.065s
After |
-123.0 dBm | -14.25 dB | 2 |
38
|
MediumFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
+0.077s
After |
-123.0 dBm | -14.25 dB | 2 |
38
|
MediumFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
+0.088s
After |
-123.0 dBm | -14.25 dB | 2 |
38
|
ShortFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
+0.099s
After |
-123.0 dBm | -14.25 dB | 2 |
38
|
ShortFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
+0.110s
After |
-123.0 dBm | -14.25 dB | 2 |
38
|
ShortFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
+0.121s
After |
-123.0 dBm | -14.25 dB | 2 |
38
|
ShortFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
+0.133s
After |
-123.0 dBm | -14.25 dB | 2 |
38
|
ShortFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
+0.144s
After |
-123.0 dBm | -14.25 dB | 2 |
38
|
ShortFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
+0.155s
After |
-123.0 dBm | -14.25 dB | 2 |
38
|
ShortFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
+0.166s
After |
-123.0 dBm | -14.25 dB | 2 |
38
|
ShortFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
+0.177s
After |
-123.0 dBm | -14.25 dB | 2 |
38
|
ShortFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
+0.188s
After |
-123.0 dBm | -14.25 dB | 2 |
38
|
ShortFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
+0.204s
After |
-123.0 dBm | -14.25 dB | 2 |
38
|
ShortFast | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
+0.222s
After |
-123.0 dBm | -14.25 dB | 2 |
38
|
ShortTurbo | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
+0.234s
After |
-123.0 dBm | -14.25 dB | 2 |
38
|
ShortTurbo | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
+0.248s
After |
-123.0 dBm | -14.25 dB | 2 |
38
|
ShortTurbo | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
+0.260s
After |
-123.0 dBm | -14.25 dB | 2 |
38
|
ShortTurbo | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
+0.273s
After |
-123.0 dBm | -14.25 dB | 2 |
38
|
ShortTurbo | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
+0.288s
After |
-123.0 dBm | -14.25 dB | 2 |
38
|
ShortTurbo | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
+0.299s
After |
-123.0 dBm | -14.25 dB | 2 |
38
|
ShortTurbo | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
+0.312s
After |
-123.0 dBm | -14.25 dB | 2 |
38
|
ShortTurbo | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
+0.323s
After |
-123.0 dBm | -14.25 dB | 2 |
38
|
ShortTurbo | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
+0.336s
After |
-123.0 dBm | -14.25 dB | 2 |
38
|
ShortTurbo | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
+0.348s
After |
-123.0 dBm | -14.25 dB | 2 |
38
|
ShortTurbo | 2026-03-28 05:43:14 UTC | View |
| AH001 (0d74) |
+0.360s
After |
-123.0 dBm | -14.25 dB | 2 |
38
|
LongFast | 2026-03-28 05:43:14 UTC | View |
| FLAN-F208 (FLAN) |
+3.336s
After |
-43.0 dBm | 6.25 dB | 4 |
96
FLAM
|
LongFast | 2026-03-28 05:43:17 UTC | View |
46
Total Receptions
2
Unique Gateways