Packet #17777571 Success
POSITION_APP packet from VE3FTS-915MHz (AT91) to !ffffffff
45
Total Receptions
1
Unique Gateways
2
Hop Count
37
Payload Bytes
Packet Information
| Database ID: | 17777571 |
|---|---|
| Mesh Packet ID: |
0xc4808ac0
Used for correlation across gateways |
| Timestamp: | 2026-03-27 08:50:15 UTC |
| From Node: | VE3FTS-915MHz (AT91) |
| To Node: | !ffffffff (ffff) |
| Success: | Processed |
| Protocol: |
POSITION_APP
Port: 3 |
| Gateway: | Crestwood (Crst) |
|---|---|
| Channel: | MediumFast |
| RSSI: | -128 dBm |
| SNR: | -17.5 dBm |
| Hop Info: |
2/5 hops
Start: 5, Limit: 3 |
| Relay Node: | None |
Payload Data
Protocol: POSITION_APP
Size: 37 bytes
Decoded:
Yes
Decoded Data:
| Latitude: | 43.004723° |
|---|---|
| Longitude: | -81.225318° |
| Altitude: | 237 m |
| Satellites: | 7 |
| 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: | 37 bytes |
|---|---|
| Gateway: | !433c6b10 |
| 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 |
!433c6b10
Node ID format |
channel_id |
MediumFast
|
packet |
MeshPacket (37 bytes)
Contains the actual mesh network packet |
MeshPacket Fields
Core mesh packet with routing and payload information
| Field | Value | Type |
|---|---|---|
from |
1819540892
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 |
5
Initial hop limit |
uint32 |
hops_taken |
2
Calculated: hop_start - hop_limit |
derived |
rx_rssi |
-128.0 dBm
Signal strength at gateway |
int32 |
rx_snr |
-17.50 dB
Signal quality at gateway |
float |
rx_time |
1774601415
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 |
Not set | uint32 |
tx_after |
Not set | uint32 |
timestamp |
1774601415.8676224
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
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: | !433c6b10 |
| Position Precision: | 14 bits (~1500.0m accuracy) |
| Position precision meters: | 1500.0 |
| Signal Metrics: |
RSSI: -128.0 dBm SNR: -17.50 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": 43.0047232,
"longitude": -81.2253184,
"altitude": 237,
"sats_in_view": 7,
"precision_bits": 14
}
Complete Protobuf Decode (JSON)
{
"service_envelope": {
"gateway_id": "!433c6b10",
"channel_id": "MediumFast",
"packet": "MeshPacket (see mesh_packet below)"
},
"mesh_packet": {
"from": 1819540892,
"to": 4294967295,
"id": 3296758464,
"rx_time": 1774601415,
"rx_snr": -17.5,
"rx_rssi": -128,
"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": 0,
"tx_after": 0,
"decoded": {
"portnum": 3,
"payload": "0d0000a21915000096cf18ed0125bf44c669280258b1027812800180cbc00c980107b8010e",
"want_response": null,
"dest": null,
"source": null,
"request_id": null,
"reply_id": null,
"emoji": null,
"parsed_payload": {
"latitude_i": 430047232,
"longitude_i": -812253184,
"altitude": 237,
"time": 1774601407,
"location_source": "LOC_INTERNAL",
"PDOP": 305,
"ground_speed": 18,
"ground_track": 26224000,
"sats_in_view": 7,
"precision_bits": 14,
"type": "protobuf",
"portnum": "POSITION_APP",
"message_class": "Position"
}
}
}
}
Raw Packet Data (37 bytes)
0d0000a21915000096cf18ed0125bf44c669280258b1027812800180cbc00c980107b8010e
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 |
|---|---|---|---|---|---|---|---|---|
| Crestwood (Crst) Primary |
0.000s
Reference |
-128.0 dBm | -17.50 dB | 2 | - | MediumFast | 2026-03-27 08:50:15 UTC | Current |
| Crestwood (Crst) |
-0.238s
Before |
-128.0 dBm | -17.50 dB | 2 | - | LongFast | 2026-03-27 08:50:15 UTC | View |
| Crestwood (Crst) |
-0.207s
Before |
-128.0 dBm | -17.50 dB | 2 | - | LongFast | 2026-03-27 08:50:15 UTC | View |
| Crestwood (Crst) |
-0.187s
Before |
-128.0 dBm | -17.50 dB | 2 | - | LongFast | 2026-03-27 08:50:15 UTC | View |
| Crestwood (Crst) |
-0.170s
Before |
-128.0 dBm | -17.50 dB | 2 | - | LongFast | 2026-03-27 08:50:15 UTC | View |
| Crestwood (Crst) |
-0.161s
Before |
-128.0 dBm | -17.50 dB | 2 | - | LongFast | 2026-03-27 08:50:15 UTC | View |
| Crestwood (Crst) |
-0.144s
Before |
-128.0 dBm | -17.50 dB | 2 | - | LongFast | 2026-03-27 08:50:15 UTC | View |
| Crestwood (Crst) |
-0.126s
Before |
-128.0 dBm | -17.50 dB | 2 | - | LongFast | 2026-03-27 08:50:15 UTC | View |
| Crestwood (Crst) |
-0.115s
Before |
-128.0 dBm | -17.50 dB | 2 | - | LongFast | 2026-03-27 08:50:15 UTC | View |
| Crestwood (Crst) |
-0.104s
Before |
-128.0 dBm | -17.50 dB | 2 | - | LongFast | 2026-03-27 08:50:15 UTC | View |
| Crestwood (Crst) |
-0.093s
Before |
-128.0 dBm | -17.50 dB | 2 | - | LongFast | 2026-03-27 08:50:15 UTC | View |
| Crestwood (Crst) |
-0.082s
Before |
-128.0 dBm | -17.50 dB | 2 | - | LongFast | 2026-03-27 08:50:15 UTC | View |
| Crestwood (Crst) |
-0.072s
Before |
-128.0 dBm | -17.50 dB | 2 | - | MediumFast | 2026-03-27 08:50:15 UTC | View |
| Crestwood (Crst) |
-0.050s
Before |
-128.0 dBm | -17.50 dB | 2 | - | MediumFast | 2026-03-27 08:50:15 UTC | View |
| Crestwood (Crst) |
-0.035s
Before |
-128.0 dBm | -17.50 dB | 2 | - | MediumFast | 2026-03-27 08:50:15 UTC | View |
| Crestwood (Crst) |
-0.024s
Before |
-128.0 dBm | -17.50 dB | 2 | - | MediumFast | 2026-03-27 08:50:15 UTC | View |
| Crestwood (Crst) |
-0.012s
Before |
-128.0 dBm | -17.50 dB | 2 | - | MediumFast | 2026-03-27 08:50:15 UTC | View |
| Crestwood (Crst) |
+0.016s
After |
-128.0 dBm | -17.50 dB | 2 | - | MediumFast | 2026-03-27 08:50:15 UTC | View |
| Crestwood (Crst) |
+0.027s
After |
-128.0 dBm | -17.50 dB | 2 | - | MediumFast | 2026-03-27 08:50:15 UTC | View |
| Crestwood (Crst) |
+0.037s
After |
-128.0 dBm | -17.50 dB | 2 | - | MediumFast | 2026-03-27 08:50:15 UTC | View |
| Crestwood (Crst) |
+0.051s
After |
-128.0 dBm | -17.50 dB | 2 | - | MediumFast | 2026-03-27 08:50:15 UTC | View |
| Crestwood (Crst) |
+0.062s
After |
-128.0 dBm | -17.50 dB | 2 | - | MediumFast | 2026-03-27 08:50:15 UTC | View |
| Crestwood (Crst) |
+0.072s
After |
-128.0 dBm | -17.50 dB | 2 | - | ShortFast | 2026-03-27 08:50:15 UTC | View |
| Crestwood (Crst) |
+0.083s
After |
-128.0 dBm | -17.50 dB | 2 | - | ShortFast | 2026-03-27 08:50:15 UTC | View |
| Crestwood (Crst) |
+0.094s
After |
-128.0 dBm | -17.50 dB | 2 | - | ShortFast | 2026-03-27 08:50:15 UTC | View |
| Crestwood (Crst) |
+0.105s
After |
-128.0 dBm | -17.50 dB | 2 | - | ShortFast | 2026-03-27 08:50:15 UTC | View |
| Crestwood (Crst) |
+0.117s
After |
-128.0 dBm | -17.50 dB | 2 | - | ShortFast | 2026-03-27 08:50:15 UTC | View |
| Crestwood (Crst) |
+0.129s
After |
-128.0 dBm | -17.50 dB | 2 | - | ShortFast | 2026-03-27 08:50:15 UTC | View |
| Crestwood (Crst) |
+0.141s
After |
-128.0 dBm | -17.50 dB | 2 | - | ShortFast | 2026-03-27 08:50:16 UTC | View |
| Crestwood (Crst) |
+0.153s
After |
-128.0 dBm | -17.50 dB | 2 | - | ShortFast | 2026-03-27 08:50:16 UTC | View |
| Crestwood (Crst) |
+0.164s
After |
-128.0 dBm | -17.50 dB | 2 | - | ShortFast | 2026-03-27 08:50:16 UTC | View |
| Crestwood (Crst) |
+0.177s
After |
-128.0 dBm | -17.50 dB | 2 | - | ShortFast | 2026-03-27 08:50:16 UTC | View |
| Crestwood (Crst) |
+0.189s
After |
-128.0 dBm | -17.50 dB | 2 | - | ShortFast | 2026-03-27 08:50:16 UTC | View |
| Crestwood (Crst) |
+0.201s
After |
-128.0 dBm | -17.50 dB | 2 | - | ShortTurbo | 2026-03-27 08:50:16 UTC | View |
| Crestwood (Crst) |
+0.211s
After |
-128.0 dBm | -17.50 dB | 2 | - | ShortTurbo | 2026-03-27 08:50:16 UTC | View |
| Crestwood (Crst) |
+0.222s
After |
-128.0 dBm | -17.50 dB | 2 | - | ShortTurbo | 2026-03-27 08:50:16 UTC | View |
| Crestwood (Crst) |
+0.233s
After |
-128.0 dBm | -17.50 dB | 2 | - | ShortTurbo | 2026-03-27 08:50:16 UTC | View |
| Crestwood (Crst) |
+0.244s
After |
-128.0 dBm | -17.50 dB | 2 | - | ShortTurbo | 2026-03-27 08:50:16 UTC | View |
| Crestwood (Crst) |
+0.255s
After |
-128.0 dBm | -17.50 dB | 2 | - | ShortTurbo | 2026-03-27 08:50:16 UTC | View |
| Crestwood (Crst) |
+0.265s
After |
-128.0 dBm | -17.50 dB | 2 | - | ShortTurbo | 2026-03-27 08:50:16 UTC | View |
| Crestwood (Crst) |
+0.276s
After |
-128.0 dBm | -17.50 dB | 2 | - | ShortTurbo | 2026-03-27 08:50:16 UTC | View |
| Crestwood (Crst) |
+0.287s
After |
-128.0 dBm | -17.50 dB | 2 | - | ShortTurbo | 2026-03-27 08:50:16 UTC | View |
| Crestwood (Crst) |
+0.300s
After |
-128.0 dBm | -17.50 dB | 2 | - | ShortTurbo | 2026-03-27 08:50:16 UTC | View |
| Crestwood (Crst) |
+0.312s
After |
-128.0 dBm | -17.50 dB | 2 | - | ShortTurbo | 2026-03-27 08:50:16 UTC | View |
| Crestwood (Crst) |
+0.324s
After |
-128.0 dBm | -17.50 dB | 2 | - | LongFast | 2026-03-27 08:50:16 UTC | View |
45
Total Receptions
1
Unique Gateways