Packet #39432782 Success
POSITION_APP packet from Happy Eric (:)) to !ffffffff
45
Total Receptions
1
Unique Gateways
3
Hop Count
37
Payload Bytes
Packet Information
| Database ID: | 39432782 |
|---|---|
| Mesh Packet ID: |
0x4bcea009
Used for correlation across gateways |
| Timestamp: | 2026-05-16 04:21:50 UTC |
| From Node: | Happy Eric (:)) |
| To Node: | !ffffffff (ffff) |
| Success: | Processed |
| Protocol: |
POSITION_APP
Port: 3 |
| Gateway: | Meshtastic b018 (b018) |
|---|---|
| Channel: | ShortFast |
| RSSI: | -120 dBm |
| SNR: | -9.5 dBm |
| Hop Info: |
3/7 hops
Start: 7, Limit: 4 |
| Relay Node: |
a8
Last byte of the last hop that relayed this packet |
Payload Data
Protocol: POSITION_APP
Size: 37 bytes
Decoded:
Yes
Decoded Data:
| Latitude: | 46.268416° |
|---|---|
| Longitude: | -72.587674° |
| Altitude: | 2635 m |
| Satellites: | 3 |
| 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: | 37 bytes |
|---|---|
| Gateway: | !db51b018 |
| Channel: | ShortFast |
| Payload Type: | POSITION_APP |
| Hop Count: | 3 / 7 |
Privacy Summary
Exposure Level:
Broadcast
Broadcast
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: ShortFast
+ 2 more...
✓ Direct LoRa transmission (not via MQTT)
✓ Custom channel: ShortFast
+ 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 |
!db51b018
Node ID format |
channel_id |
ShortFast
|
packet |
MeshPacket (37 bytes)
Contains the actual mesh network packet |
MeshPacket Fields
Core mesh packet with routing and payload information
| Field | Value | Type |
|---|---|---|
from |
3682167912
Source node ID |
uint32 |
to |
4294967295 (Broadcast)
Visible to all nodes |
uint32 |
decoded.portnum |
3
POSITION_APP |
enum |
decoded.payload_length |
37 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 |
-120.0 dBm
Signal strength at gateway |
int32 |
rx_snr |
-9.50 dB
Signal quality at gateway |
float |
rx_time |
1778905309
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 |
168
Relay node ID |
uint32 |
tx_after |
Not set | uint32 |
timestamp |
1778905310.7441602
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: ShortFast
- ✓ 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 (3 hops)
- ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
| Gateway ID: | !db51b018 |
| Position Precision: | 13 bits (~2900.0m accuracy) |
| Position precision meters: | 2900.0 |
| Signal Metrics: |
RSSI: -120.0 dBm SNR: -9.50 dB |
Complete Payload Analysis
Detailed breakdown of all payload fields and decoded data
Payload Metadata:
| Protocol: | POSITION_APP |
|---|---|
| Size: | 37 bytes |
| Decoded: | Yes |
Complete Payload Data (JSON):
{
"latitude": 46.268416,
"longitude": -72.5876736,
"altitude": 2635,
"sats_in_view": 3,
"precision_bits": 13
}
Complete Protobuf Decode (JSON)
{
"service_envelope": {
"gateway_id": "!db51b018",
"channel_id": "ShortFast",
"packet": "MeshPacket (see mesh_packet below)"
},
"mesh_packet": {
"from": 3682167912,
"to": 4294967295,
"id": 1271832585,
"rx_time": 1778905309,
"rx_snr": -9.5,
"rx_rssi": -120,
"hop_limit": 4,
"hop_start": 7,
"via_mqtt": false,
"want_ack": false,
"priority": 0,
"delayed": 0,
"channel_index": null,
"pki_encrypted": false,
"next_hop": 0,
"relay_node": 168,
"tx_after": 0,
"decoded": {
"portnum": 3,
"payload": "0d0000941b150000bcd418cb1425d8f0076a280258f209786d800180f9f810980103b8010d",
"want_response": null,
"dest": null,
"source": null,
"request_id": null,
"reply_id": null,
"emoji": null,
"parsed_payload": {
"latitude_i": 462684160,
"longitude_i": -725876736,
"altitude": 2635,
"time": 1778905304,
"location_source": "LOC_INTERNAL",
"PDOP": 1266,
"ground_speed": 109,
"ground_track": 35536000,
"sats_in_view": 3,
"precision_bits": 13,
"type": "protobuf",
"portnum": "POSITION_APP",
"message_class": "Position"
}
}
}
}
Raw Packet Data (37 bytes)
0d0000941b150000bcd418cb1425d8f0076a280258f209786d800180f9f810980103b8010d
Hex Analysis:
| Size: | 37 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 |
-120.0 dBm | -9.50 dB | 3 |
a8
|
ShortFast | 2026-05-16 04:21:50 UTC | Current |
| Meshtastic b018 (b018) |
-0.360s
Before |
-120.0 dBm | -9.50 dB | 3 |
a8
|
LongFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
-0.329s
Before |
-120.0 dBm | -9.50 dB | 3 |
a8
|
LongFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
-0.318s
Before |
-120.0 dBm | -9.50 dB | 3 |
a8
|
LongFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
-0.307s
Before |
-120.0 dBm | -9.50 dB | 3 |
a8
|
LongFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
-0.296s
Before |
-120.0 dBm | -9.50 dB | 3 |
a8
|
LongFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
-0.279s
Before |
-120.0 dBm | -9.50 dB | 3 |
a8
|
LongFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
-0.268s
Before |
-120.0 dBm | -9.50 dB | 3 |
a8
|
LongFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
-0.257s
Before |
-120.0 dBm | -9.50 dB | 3 |
a8
|
LongFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
-0.246s
Before |
-120.0 dBm | -9.50 dB | 3 |
a8
|
LongFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
-0.235s
Before |
-120.0 dBm | -9.50 dB | 3 |
a8
|
LongFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
-0.217s
Before |
-120.0 dBm | -9.50 dB | 3 |
a8
|
LongFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
-0.206s
Before |
-120.0 dBm | -9.50 dB | 3 |
a8
|
MediumFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
-0.193s
Before |
-120.0 dBm | -9.50 dB | 3 |
a8
|
MediumFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
-0.182s
Before |
-120.0 dBm | -9.50 dB | 3 |
a8
|
MediumFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
-0.171s
Before |
-120.0 dBm | -9.50 dB | 3 |
a8
|
MediumFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
-0.159s
Before |
-120.0 dBm | -9.50 dB | 3 |
a8
|
MediumFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
-0.147s
Before |
-120.0 dBm | -9.50 dB | 3 |
a8
|
MediumFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
-0.135s
Before |
-120.0 dBm | -9.50 dB | 3 |
a8
|
MediumFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
-0.123s
Before |
-120.0 dBm | -9.50 dB | 3 |
a8
|
MediumFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
-0.107s
Before |
-120.0 dBm | -9.50 dB | 3 |
a8
|
MediumFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
-0.096s
Before |
-120.0 dBm | -9.50 dB | 3 |
a8
|
MediumFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
-0.084s
Before |
-120.0 dBm | -9.50 dB | 3 |
a8
|
MediumFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
-0.072s
Before |
-120.0 dBm | -9.50 dB | 3 |
a8
|
ShortFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
-0.061s
Before |
-120.0 dBm | -9.50 dB | 3 |
a8
|
ShortFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
-0.051s
Before |
-120.0 dBm | -9.50 dB | 3 |
a8
|
ShortFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
-0.037s
Before |
-120.0 dBm | -9.50 dB | 3 |
a8
|
ShortFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
-0.023s
Before |
-120.0 dBm | -9.50 dB | 3 |
a8
|
ShortFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
-0.011s
Before |
-120.0 dBm | -9.50 dB | 3 |
a8
|
ShortFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
+0.019s
After |
-120.0 dBm | -9.50 dB | 3 |
a8
|
ShortFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
+0.032s
After |
-120.0 dBm | -9.50 dB | 3 |
a8
|
ShortFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
+0.050s
After |
-120.0 dBm | -9.50 dB | 3 |
a8
|
ShortFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
+0.062s
After |
-120.0 dBm | -9.50 dB | 3 |
a8
|
ShortFast | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
+0.074s
After |
-120.0 dBm | -9.50 dB | 3 |
a8
|
ShortTurbo | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
+0.086s
After |
-120.0 dBm | -9.50 dB | 3 |
a8
|
ShortTurbo | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
+0.098s
After |
-120.0 dBm | -9.50 dB | 3 |
a8
|
ShortTurbo | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
+0.110s
After |
-120.0 dBm | -9.50 dB | 3 |
a8
|
ShortTurbo | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
+0.122s
After |
-120.0 dBm | -9.50 dB | 3 |
a8
|
ShortTurbo | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
+0.133s
After |
-120.0 dBm | -9.50 dB | 3 |
a8
|
ShortTurbo | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
+0.152s
After |
-120.0 dBm | -9.50 dB | 3 |
a8
|
ShortTurbo | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
+0.168s
After |
-120.0 dBm | -9.50 dB | 3 |
a8
|
ShortTurbo | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
+0.179s
After |
-120.0 dBm | -9.50 dB | 3 |
a8
|
ShortTurbo | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
+0.189s
After |
-120.0 dBm | -9.50 dB | 3 |
a8
|
ShortTurbo | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
+0.201s
After |
-120.0 dBm | -9.50 dB | 3 |
a8
|
ShortTurbo | 2026-05-16 04:21:50 UTC | View |
| Meshtastic b018 (b018) |
+0.213s
After |
-120.0 dBm | -9.50 dB | 3 |
a8
|
LongFast | 2026-05-16 04:21:50 UTC | View |
45
Total Receptions
1
Unique Gateways