Packet #39842551 Success
POSITION_APP packet from Lambton Bridge1 - wiki.mt.gt (c578) to !ffffffff
45
Total Receptions
1
Unique Gateways
0
Hop Count
37
Payload Bytes
Packet Information
| Database ID: | 39842551 |
|---|---|
| Mesh Packet ID: |
0xafc0b9b9
Used for correlation across gateways |
| Timestamp: | 2026-05-17 04:12:37 UTC |
| From Node: | Lambton Bridge1 - wiki.mt.gt (c578) |
| To Node: | !ffffffff (ffff) |
| Success: | Processed |
| Protocol: |
POSITION_APP
Port: 3 |
| Gateway: | Lambton Bridge1 - wiki.mt.gt (c578) |
|---|---|
| Channel: | LongFast |
| RSSI: | Unknown |
| SNR: | Unknown |
| Hop Info: |
0/3 hops
Start: 3, Limit: 3 |
| Relay Node: |
78
c578
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: 37 bytes
Decoded:
Yes
Decoded Data:
| Latitude: | 42.965402° |
|---|---|
| Longitude: | -82.129715° |
| Altitude: | 330 m |
| Satellites: | 5 |
| 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: | !c4f7c578 |
| Channel: | LongFast |
| Payload Type: | POSITION_APP |
| Hop Count: | Unknown / 3 |
Privacy Summary
Exposure Level:
Broadcast
Broadcast
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked
+ 2 more...
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked
+ 2 more...
Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 1 more...
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 1 more...
MQTT ServiceEnvelope Fields
MQTT ServiceEnvelope contains the MeshPacket plus routing metadata
| Field | Value |
|---|---|
gateway_id |
!c4f7c578
Node ID format |
channel_id |
LongFast
Default public channel |
packet |
MeshPacket (37 bytes)
Contains the actual mesh network packet |
MeshPacket Fields
Core mesh packet with routing and payload information
| Field | Value | Type |
|---|---|---|
from |
3304572280
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 |
3
Remaining hops allowed |
uint32 |
hop_start |
3
Initial hop limit |
uint32 |
hops_taken |
0
Calculated: hop_start - hop_limit |
derived |
rx_rssi |
Not set | int32 |
rx_snr |
Not set | float |
rx_time |
1778991157
Receive timestamp |
fixed32 |
via_mqtt |
False
Direct LoRa transmission |
bool |
want_ack |
False
No ACK requested |
bool |
priority |
10
Packet priority level |
enum |
delayed |
Not set | enum |
channel |
Not set | uint32 |
pki_encrypted |
False
Standard encryption |
bool |
next_hop |
Not set | uint32 |
relay_node |
120
Relay node ID |
uint32 |
tx_after |
Not set | uint32 |
timestamp |
1778991157.5830572
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)
- ✓ 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
- ⚠ Default channel - no encryption
- ⚠ Packet visible to MQTT subscribers
MQTT-Specific Fields
| Gateway ID: | !c4f7c578 |
| Position Precision: | 13 bits (~2900.0m accuracy) |
| Position precision meters: | 2900.0 |
| Zero Hop Policy: |
Enabled
Direct gateway connection |
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": 42.9654016,
"longitude": -82.1297152,
"altitude": 330,
"sats_in_view": 5,
"precision_bits": 13
}
Complete Protobuf Decode (JSON)
{
"service_envelope": {
"gateway_id": "!c4f7c578",
"channel_id": "LongFast",
"packet": "MeshPacket (see mesh_packet below)"
},
"mesh_packet": {
"from": 3304572280,
"to": 4294967295,
"id": 2948643257,
"rx_time": 1778991157,
"rx_snr": 0.0,
"rx_rssi": 0,
"hop_limit": 3,
"hop_start": 3,
"via_mqtt": false,
"want_ack": false,
"priority": 10,
"delayed": 0,
"channel_index": null,
"pki_encrypted": false,
"next_hop": 0,
"relay_node": 120,
"tx_after": 0,
"decoded": {
"portnum": 3,
"payload": "0d00009c191500000ccf18ca02253540096a280258e602781e8001d0f4f605980105b8010d",
"want_response": null,
"dest": null,
"source": null,
"request_id": null,
"reply_id": null,
"emoji": null,
"parsed_payload": {
"latitude_i": 429654016,
"longitude_i": -821297152,
"altitude": 330,
"time": 1778991157,
"location_source": "LOC_INTERNAL",
"PDOP": 358,
"ground_speed": 30,
"ground_track": 12434000,
"sats_in_view": 5,
"precision_bits": 13,
"type": "protobuf",
"portnum": "POSITION_APP",
"message_class": "Position"
}
}
}
}
Raw Packet Data (37 bytes)
0d00009c191500000ccf18ca02253540096a280258e602781e8001d0f4f605980105b8010d
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 |
|---|---|---|---|---|---|---|---|---|
| Lambton Bridge1 - wiki.mt.gt (c578) Primary |
0.000s
Reference |
Unknown | Unknown | 0 |
78
c578
|
LongFast | 2026-05-17 04:12:37 UTC | Current |
| Lambton Bridge1 - wiki.mt.gt (c578) |
-0.048s
Before |
Unknown | Unknown | 0 |
78
c578
|
LongFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
-0.037s
Before |
Unknown | Unknown | 0 |
78
c578
|
LongFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
-0.026s
Before |
Unknown | Unknown | 0 |
78
c578
|
LongFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
-0.012s
Before |
Unknown | Unknown | 0 |
78
c578
|
LongFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.013s
After |
Unknown | Unknown | 0 |
78
c578
|
LongFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.023s
After |
Unknown | Unknown | 0 |
78
c578
|
LongFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.035s
After |
Unknown | Unknown | 0 |
78
c578
|
LongFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.048s
After |
Unknown | Unknown | 0 |
78
c578
|
LongFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.060s
After |
Unknown | Unknown | 0 |
78
c578
|
LongFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.073s
After |
Unknown | Unknown | 0 |
78
c578
|
LongFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.084s
After |
Unknown | Unknown | 0 |
78
c578
|
MediumFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.095s
After |
Unknown | Unknown | 0 |
78
c578
|
MediumFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.107s
After |
Unknown | Unknown | 0 |
78
c578
|
MediumFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.118s
After |
Unknown | Unknown | 0 |
78
c578
|
MediumFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.135s
After |
Unknown | Unknown | 0 |
78
c578
|
MediumFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.147s
After |
Unknown | Unknown | 0 |
78
c578
|
MediumFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.163s
After |
Unknown | Unknown | 0 |
78
c578
|
MediumFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.177s
After |
Unknown | Unknown | 0 |
78
c578
|
MediumFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.203s
After |
Unknown | Unknown | 0 |
78
c578
|
MediumFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.224s
After |
Unknown | Unknown | 0 |
78
c578
|
MediumFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.241s
After |
Unknown | Unknown | 0 |
78
c578
|
MediumFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.252s
After |
Unknown | Unknown | 0 |
78
c578
|
ShortFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.269s
After |
Unknown | Unknown | 0 |
78
c578
|
ShortFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.288s
After |
Unknown | Unknown | 0 |
78
c578
|
ShortFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.298s
After |
Unknown | Unknown | 0 |
78
c578
|
ShortFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.314s
After |
Unknown | Unknown | 0 |
78
c578
|
ShortFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.326s
After |
Unknown | Unknown | 0 |
78
c578
|
ShortFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.337s
After |
Unknown | Unknown | 0 |
78
c578
|
ShortFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.356s
After |
Unknown | Unknown | 0 |
78
c578
|
ShortFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.372s
After |
Unknown | Unknown | 0 |
78
c578
|
ShortFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.390s
After |
Unknown | Unknown | 0 |
78
c578
|
ShortFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.412s
After |
Unknown | Unknown | 0 |
78
c578
|
ShortFast | 2026-05-17 04:12:37 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.432s
After |
Unknown | Unknown | 0 |
78
c578
|
ShortTurbo | 2026-05-17 04:12:38 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.447s
After |
Unknown | Unknown | 0 |
78
c578
|
ShortTurbo | 2026-05-17 04:12:38 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.477s
After |
Unknown | Unknown | 0 |
78
c578
|
ShortTurbo | 2026-05-17 04:12:38 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.497s
After |
Unknown | Unknown | 0 |
78
c578
|
ShortTurbo | 2026-05-17 04:12:38 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.516s
After |
Unknown | Unknown | 0 |
78
c578
|
ShortTurbo | 2026-05-17 04:12:38 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.534s
After |
Unknown | Unknown | 0 |
78
c578
|
ShortTurbo | 2026-05-17 04:12:38 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.554s
After |
Unknown | Unknown | 0 |
78
c578
|
ShortTurbo | 2026-05-17 04:12:38 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.575s
After |
Unknown | Unknown | 0 |
78
c578
|
ShortTurbo | 2026-05-17 04:12:38 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.593s
After |
Unknown | Unknown | 0 |
78
c578
|
ShortTurbo | 2026-05-17 04:12:38 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.605s
After |
Unknown | Unknown | 0 |
78
c578
|
ShortTurbo | 2026-05-17 04:12:38 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.617s
After |
Unknown | Unknown | 0 |
78
c578
|
ShortTurbo | 2026-05-17 04:12:38 UTC | View |
| Lambton Bridge1 - wiki.mt.gt (c578) |
+0.629s
After |
Unknown | Unknown | 0 |
78
c578
|
LongFast | 2026-05-17 04:12:38 UTC | View |
45
Total Receptions
1
Unique Gateways