Packet #39319200 Success
POSITION_APP packet from Meshtastic BIU GATEWAY (BIU2) to !ffffffff
46
Total Receptions
2
Unique Gateways
2
Hop Count
39
Payload Bytes
Packet Information
| Database ID: | 39319200 |
|---|---|
| Mesh Packet ID: |
0x616cec43
Used for correlation across gateways |
| Timestamp: | 2026-05-15 21:29:51 UTC |
| From Node: | Meshtastic BIU GATEWAY (BIU2) |
| To Node: | !ffffffff (ffff) |
| Success: | Processed |
| Protocol: |
POSITION_APP
Port: 3 |
| Gateway: | Mechanicus Alpha (M1) |
|---|---|
| Channel: | ShortFast |
| RSSI: | -125 dBm |
| SNR: | -16.5 dBm |
| Hop Info: |
2/7 hops
Start: 7, Limit: 5 |
| Relay Node: |
ce
Last byte of the last hop that relayed this packet |
Payload Data
Protocol: POSITION_APP
Size: 39 bytes
Decoded:
Yes
Decoded Data:
| Latitude: | 49.938432° |
|---|---|
| Longitude: | -97.071923° |
| Altitude: | 232 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: | 39 bytes |
|---|---|
| Gateway: | !433e868c |
| Channel: | ShortFast |
| Payload Type: | POSITION_APP |
| Hop Count: | 2 / 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 |
!433e868c
Node ID format |
channel_id |
ShortFast
|
packet |
MeshPacket (39 bytes)
Contains the actual mesh network packet |
MeshPacket Fields
Core mesh packet with routing and payload information
| Field | Value | Type |
|---|---|---|
from |
1272724880
Source node ID |
uint32 |
to |
4294967295 (Broadcast)
Visible to all nodes |
uint32 |
decoded.portnum |
3
POSITION_APP |
enum |
decoded.payload_length |
39 bytes
|
size |
hop_limit |
5
Remaining hops allowed |
uint32 |
hop_start |
7
Initial hop limit |
uint32 |
hops_taken |
2
Calculated: hop_start - hop_limit |
derived |
rx_rssi |
-125.0 dBm
Signal strength at gateway |
int32 |
rx_snr |
-16.50 dB
Signal quality at gateway |
float |
rx_time |
1778880590
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 |
206
Relay node ID |
uint32 |
tx_after |
Not set | uint32 |
timestamp |
1778880591.929132
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 (2 hops)
- ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
| Gateway ID: | !433e868c |
| Position Precision: | 13 bits (~2900.0m accuracy) |
| Position precision meters: | 2900.0 |
| Signal Metrics: |
RSSI: -125.0 dBm SNR: -16.50 dB |
Complete Payload Analysis
Detailed breakdown of all payload fields and decoded data
Payload Metadata:
| Protocol: | POSITION_APP |
|---|---|
| Size: | 39 bytes |
| Decoded: | Yes |
Complete Payload Data (JSON):
{
"latitude": 49.938432,
"longitude": -97.0719232,
"altitude": 232,
"sats_in_view": null,
"precision_bits": 13
}
Complete Protobuf Decode (JSON)
{
"service_envelope": {
"gateway_id": "!433e868c",
"channel_id": "ShortFast",
"packet": "MeshPacket (see mesh_packet below)"
},
"mesh_packet": {
"from": 1272724880,
"to": 4294967295,
"id": 1634528323,
"rx_time": 1778880590,
"rx_snr": -16.5,
"rx_rssi": -125,
"hop_limit": 5,
"hop_start": 7,
"via_mqtt": false,
"want_ack": false,
"priority": 0,
"delayed": 0,
"channel_index": null,
"pki_encrypted": false,
"next_hop": 0,
"relay_node": 206,
"tx_after": 0,
"decoded": {
"portnum": 3,
"payload": "0d0000c41d15000024c618e801254a90076a28013d4790076a50007800800100b001810bb8010d",
"want_response": null,
"dest": null,
"source": null,
"request_id": null,
"reply_id": null,
"emoji": null,
"parsed_payload": {
"latitude_i": 499384320,
"longitude_i": -970719232,
"altitude": 232,
"time": 1778880586,
"location_source": "LOC_MANUAL",
"timestamp": 1778880583,
"altitude_geoidal_separation": 0,
"ground_speed": 0,
"ground_track": 0,
"seq_number": 1409,
"precision_bits": 13,
"type": "protobuf",
"portnum": "POSITION_APP",
"message_class": "Position"
}
}
}
}
Raw Packet Data (39 bytes)
0d0000c41d15000024c618e801254a90076a28013d4790076a50007800800100b001810bb8010d
Hex Analysis:
| Size: | 39 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 |
|---|---|---|---|---|---|---|---|---|
| Mechanicus Alpha (M1) Primary |
0.000s
Reference |
-125.0 dBm | -16.50 dB | 2 |
ce
|
ShortFast | 2026-05-15 21:29:51 UTC | Current |
| Mechanicus Alpha (M1) |
-0.350s
Before |
-125.0 dBm | -16.50 dB | 2 |
ce
|
LongFast | 2026-05-15 21:29:51 UTC | View |
| Mechanicus Alpha (M1) |
-0.323s
Before |
-125.0 dBm | -16.50 dB | 2 |
ce
|
LongFast | 2026-05-15 21:29:51 UTC | View |
| Mechanicus Alpha (M1) |
-0.310s
Before |
-125.0 dBm | -16.50 dB | 2 |
ce
|
LongFast | 2026-05-15 21:29:51 UTC | View |
| Mechanicus Alpha (M1) |
-0.292s
Before |
-125.0 dBm | -16.50 dB | 2 |
ce
|
LongFast | 2026-05-15 21:29:51 UTC | View |
| Mechanicus Alpha (M1) |
-0.260s
Before |
-125.0 dBm | -16.50 dB | 2 |
ce
|
LongFast | 2026-05-15 21:29:51 UTC | View |
| Mechanicus Alpha (M1) |
-0.242s
Before |
-125.0 dBm | -16.50 dB | 2 |
ce
|
LongFast | 2026-05-15 21:29:51 UTC | View |
| Mechanicus Alpha (M1) |
-0.224s
Before |
-125.0 dBm | -16.50 dB | 2 |
ce
|
LongFast | 2026-05-15 21:29:51 UTC | View |
| Mechanicus Alpha (M1) |
-0.207s
Before |
-125.0 dBm | -16.50 dB | 2 |
ce
|
LongFast | 2026-05-15 21:29:51 UTC | View |
| Mechanicus Alpha (M1) |
-0.190s
Before |
-125.0 dBm | -16.50 dB | 2 |
ce
|
LongFast | 2026-05-15 21:29:51 UTC | View |
| Mechanicus Alpha (M1) |
-0.170s
Before |
-125.0 dBm | -16.50 dB | 2 |
ce
|
LongFast | 2026-05-15 21:29:51 UTC | View |
| Mechanicus Alpha (M1) |
-0.158s
Before |
-125.0 dBm | -16.50 dB | 2 |
ce
|
LongFast | 2026-05-15 21:29:51 UTC | View |
| Mechanicus Alpha (M1) |
-0.147s
Before |
-125.0 dBm | -16.50 dB | 2 |
ce
|
MediumFast | 2026-05-15 21:29:51 UTC | View |
| Mechanicus Alpha (M1) |
-0.135s
Before |
-125.0 dBm | -16.50 dB | 2 |
ce
|
MediumFast | 2026-05-15 21:29:51 UTC | View |
| Mechanicus Alpha (M1) |
-0.124s
Before |
-125.0 dBm | -16.50 dB | 2 |
ce
|
MediumFast | 2026-05-15 21:29:51 UTC | View |
| Mechanicus Alpha (M1) |
-0.113s
Before |
-125.0 dBm | -16.50 dB | 2 |
ce
|
MediumFast | 2026-05-15 21:29:51 UTC | View |
| Mechanicus Alpha (M1) |
-0.101s
Before |
-125.0 dBm | -16.50 dB | 2 |
ce
|
MediumFast | 2026-05-15 21:29:51 UTC | View |
| Mechanicus Alpha (M1) |
-0.090s
Before |
-125.0 dBm | -16.50 dB | 2 |
ce
|
MediumFast | 2026-05-15 21:29:51 UTC | View |
| Mechanicus Alpha (M1) |
-0.077s
Before |
-125.0 dBm | -16.50 dB | 2 |
ce
|
MediumFast | 2026-05-15 21:29:51 UTC | View |
| Mechanicus Alpha (M1) |
-0.065s
Before |
-125.0 dBm | -16.50 dB | 2 |
ce
|
MediumFast | 2026-05-15 21:29:51 UTC | View |
| Mechanicus Alpha (M1) |
-0.054s
Before |
-125.0 dBm | -16.50 dB | 2 |
ce
|
MediumFast | 2026-05-15 21:29:51 UTC | View |
| Mechanicus Alpha (M1) |
-0.043s
Before |
-125.0 dBm | -16.50 dB | 2 |
ce
|
MediumFast | 2026-05-15 21:29:51 UTC | View |
| Mechanicus Alpha (M1) |
-0.033s
Before |
-125.0 dBm | -16.50 dB | 2 |
ce
|
MediumFast | 2026-05-15 21:29:51 UTC | View |
| Mechanicus Alpha (M1) |
-0.022s
Before |
-125.0 dBm | -16.50 dB | 2 |
ce
|
ShortFast | 2026-05-15 21:29:51 UTC | View |
| Mechanicus Alpha (M1) |
-0.012s
Before |
-125.0 dBm | -16.50 dB | 2 |
ce
|
ShortFast | 2026-05-15 21:29:51 UTC | View |
| Mechanicus Alpha (M1) |
+0.012s
After |
-125.0 dBm | -16.50 dB | 2 |
ce
|
ShortFast | 2026-05-15 21:29:51 UTC | View |
| Mechanicus Alpha (M1) |
+0.042s
After |
-125.0 dBm | -16.50 dB | 2 |
ce
|
ShortFast | 2026-05-15 21:29:51 UTC | View |
| Mechanicus Alpha (M1) |
+0.067s
After |
-125.0 dBm | -16.50 dB | 2 |
ce
|
ShortFast | 2026-05-15 21:29:51 UTC | View |
| Mechanicus Alpha (M1) |
+0.093s
After |
-125.0 dBm | -16.50 dB | 2 |
ce
|
ShortFast | 2026-05-15 21:29:52 UTC | View |
| Mechanicus Alpha (M1) |
+0.118s
After |
-125.0 dBm | -16.50 dB | 2 |
ce
|
ShortFast | 2026-05-15 21:29:52 UTC | View |
| Mechanicus Alpha (M1) |
+0.142s
After |
-125.0 dBm | -16.50 dB | 2 |
ce
|
ShortFast | 2026-05-15 21:29:52 UTC | View |
| Mechanicus Alpha (M1) |
+0.166s
After |
-125.0 dBm | -16.50 dB | 2 |
ce
|
ShortFast | 2026-05-15 21:29:52 UTC | View |
| Mechanicus Alpha (M1) |
+0.184s
After |
-125.0 dBm | -16.50 dB | 2 |
ce
|
ShortFast | 2026-05-15 21:29:52 UTC | View |
| Mechanicus Alpha (M1) |
+0.213s
After |
-125.0 dBm | -16.50 dB | 2 |
ce
|
ShortTurbo | 2026-05-15 21:29:52 UTC | View |
| Mechanicus Alpha (M1) |
+0.241s
After |
-125.0 dBm | -16.50 dB | 2 |
ce
|
ShortTurbo | 2026-05-15 21:29:52 UTC | View |
| Mechanicus Alpha (M1) |
+0.267s
After |
-125.0 dBm | -16.50 dB | 2 |
ce
|
ShortTurbo | 2026-05-15 21:29:52 UTC | View |
| Mechanicus Alpha (M1) |
+0.298s
After |
-125.0 dBm | -16.50 dB | 2 |
ce
|
ShortTurbo | 2026-05-15 21:29:52 UTC | View |
| Mechanicus Alpha (M1) |
+0.322s
After |
-125.0 dBm | -16.50 dB | 2 |
ce
|
ShortTurbo | 2026-05-15 21:29:52 UTC | View |
| Mechanicus Alpha (M1) |
+0.346s
After |
-125.0 dBm | -16.50 dB | 2 |
ce
|
ShortTurbo | 2026-05-15 21:29:52 UTC | View |
| Mechanicus Alpha (M1) |
+0.370s
After |
-125.0 dBm | -16.50 dB | 2 |
ce
|
ShortTurbo | 2026-05-15 21:29:52 UTC | View |
| Mechanicus Alpha (M1) |
+0.397s
After |
-125.0 dBm | -16.50 dB | 2 |
ce
|
ShortTurbo | 2026-05-15 21:29:52 UTC | View |
| Mechanicus Alpha (M1) |
+0.417s
After |
-125.0 dBm | -16.50 dB | 2 |
ce
|
ShortTurbo | 2026-05-15 21:29:52 UTC | View |
| Mechanicus Alpha (M1) |
+0.442s
After |
-125.0 dBm | -16.50 dB | 2 |
ce
|
ShortTurbo | 2026-05-15 21:29:52 UTC | View |
| Mechanicus Alpha (M1) |
+0.468s
After |
-125.0 dBm | -16.50 dB | 2 |
ce
|
ShortTurbo | 2026-05-15 21:29:52 UTC | View |
| Mechanicus Alpha (M1) |
+0.493s
After |
-125.0 dBm | -16.50 dB | 2 |
ce
|
LongFast | 2026-05-15 21:29:52 UTC | View |
| lidman2 (lid2) |
+0.517s
After |
-128.0 dBm | -14.75 dB | 2 |
ce
|
LongFast | 2026-05-15 21:29:52 UTC | View |
46
Total Receptions
2
Unique Gateways