Packet #40204878 Success
POSITION_APP packet from Zap South b734 (ZapS) to !ffffffff
45
Total Receptions
1
Unique Gateways
1
Hop Count
32
Payload Bytes
Packet Information
| Database ID: | 40204878 |
|---|---|
| Mesh Packet ID: |
0x1ebcddcd
Used for correlation across gateways |
| Timestamp: | 2026-05-18 01:18:46 UTC |
| From Node: | Zap South b734 (ZapS) |
| To Node: | !ffffffff (ffff) |
| Success: | Processed |
| Protocol: |
POSITION_APP
Port: 3 |
| Gateway: | MoeTD (Moe) |
|---|---|
| Channel: | ShortFast |
| RSSI: | -125 dBm |
| SNR: | -17.0 dBm |
| Hop Info: |
1/3 hops
Start: 3, Limit: 2 |
| Relay Node: |
ef
crxb
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: 32 bytes
Decoded:
Yes
Decoded Data:
| Latitude: | 47.631565° |
|---|---|
| Longitude: | -52.664730° |
| Altitude: | 75 m |
| Satellites: | 20 |
| 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: | 32 bytes |
|---|---|
| Gateway: | !4ed3691c |
| Channel: | ShortFast |
| Payload Type: | POSITION_APP |
| Hop Count: | 1 / 3 |
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 |
!4ed3691c
Node ID format |
channel_id |
ShortFast
|
packet |
MeshPacket (32 bytes)
Contains the actual mesh network packet |
MeshPacket Fields
Core mesh packet with routing and payload information
| Field | Value | Type |
|---|---|---|
from |
14137140
Source node ID |
uint32 |
to |
4294967295 (Broadcast)
Visible to all nodes |
uint32 |
decoded.portnum |
3
POSITION_APP |
enum |
decoded.payload_length |
32 bytes
|
size |
hop_limit |
2
Remaining hops allowed |
uint32 |
hop_start |
3
Initial hop limit |
uint32 |
hops_taken |
1
Calculated: hop_start - hop_limit |
derived |
rx_rssi |
-125.0 dBm
Signal strength at gateway |
int32 |
rx_snr |
-17.00 dB
Signal quality at gateway |
float |
rx_time |
1779067125
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 |
239
Relay node ID |
uint32 |
tx_after |
Not set | uint32 |
timestamp |
1779067126.2999492
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 (1 hops)
- ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
| Gateway ID: | !4ed3691c |
| Position Precision: | 13 bits (~2900.0m accuracy) |
| Position precision meters: | 2900.0 |
| Signal Metrics: |
RSSI: -125.0 dBm SNR: -17.00 dB |
Complete Payload Analysis
Detailed breakdown of all payload fields and decoded data
Payload Metadata:
| Protocol: | POSITION_APP |
|---|---|
| Size: | 32 bytes |
| Decoded: | Yes |
Complete Payload Data (JSON):
{
"latitude": 47.6315648,
"longitude": -52.6647296,
"altitude": 75,
"sats_in_view": 20,
"precision_bits": 13
}
Complete Protobuf Decode (JSON)
{
"service_envelope": {
"gateway_id": "!4ed3691c",
"channel_id": "ShortFast",
"packet": "MeshPacket (see mesh_packet below)"
},
"mesh_packet": {
"from": 14137140,
"to": 4294967295,
"id": 515694029,
"rx_time": 1779067125,
"rx_snr": -17.0,
"rx_rssi": -125,
"hop_limit": 2,
"hop_start": 3,
"via_mqtt": false,
"want_ack": false,
"priority": 0,
"delayed": 0,
"channel_index": null,
"pki_encrypted": false,
"next_hop": 0,
"relay_node": 239,
"tx_after": 0,
"decoded": {
"portnum": 3,
"payload": "0d0000641c1500009ce0184b25f7680a6a28023d63680a6a603c980114b8010d",
"want_response": null,
"dest": null,
"source": null,
"request_id": null,
"reply_id": null,
"emoji": null,
"parsed_payload": {
"latitude_i": 476315648,
"longitude_i": -526647296,
"altitude": 75,
"time": 1779067127,
"location_source": "LOC_INTERNAL",
"timestamp": 1779066979,
"HDOP": 60,
"sats_in_view": 20,
"precision_bits": 13,
"type": "protobuf",
"portnum": "POSITION_APP",
"message_class": "Position"
}
}
}
}
Raw Packet Data (32 bytes)
0d0000641c1500009ce0184b25f7680a6a28023d63680a6a603c980114b8010d
Hex Analysis:
| Size: | 32 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 |
|---|---|---|---|---|---|---|---|---|
| MoeTD (Moe) Primary |
0.000s
Reference |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
ShortFast | 2026-05-18 01:18:46 UTC | Current |
| MoeTD (Moe) |
-0.547s
Before |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
LongFast | 2026-05-18 01:18:45 UTC | View |
| MoeTD (Moe) |
-0.488s
Before |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
LongFast | 2026-05-18 01:18:45 UTC | View |
| MoeTD (Moe) |
-0.470s
Before |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
LongFast | 2026-05-18 01:18:45 UTC | View |
| MoeTD (Moe) |
-0.442s
Before |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
LongFast | 2026-05-18 01:18:45 UTC | View |
| MoeTD (Moe) |
-0.406s
Before |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
LongFast | 2026-05-18 01:18:45 UTC | View |
| MoeTD (Moe) |
-0.358s
Before |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
LongFast | 2026-05-18 01:18:45 UTC | View |
| MoeTD (Moe) |
-0.321s
Before |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
LongFast | 2026-05-18 01:18:45 UTC | View |
| MoeTD (Moe) |
-0.298s
Before |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
LongFast | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
-0.245s
Before |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
LongFast | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
-0.232s
Before |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
LongFast | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
-0.219s
Before |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
LongFast | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
-0.208s
Before |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
MediumFast | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
-0.196s
Before |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
MediumFast | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
-0.183s
Before |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
MediumFast | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
-0.171s
Before |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
MediumFast | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
-0.157s
Before |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
MediumFast | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
-0.144s
Before |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
MediumFast | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
-0.130s
Before |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
MediumFast | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
-0.104s
Before |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
MediumFast | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
-0.085s
Before |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
MediumFast | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
-0.072s
Before |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
MediumFast | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
-0.058s
Before |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
MediumFast | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
-0.044s
Before |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
ShortFast | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
-0.029s
Before |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
ShortFast | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
-0.013s
Before |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
ShortFast | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
+0.013s
After |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
ShortFast | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
+0.026s
After |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
ShortFast | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
+0.046s
After |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
ShortFast | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
+0.059s
After |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
ShortFast | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
+0.072s
After |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
ShortFast | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
+0.084s
After |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
ShortFast | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
+0.104s
After |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
ShortFast | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
+0.122s
After |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
ShortTurbo | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
+0.132s
After |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
ShortTurbo | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
+0.144s
After |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
ShortTurbo | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
+0.158s
After |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
ShortTurbo | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
+0.174s
After |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
ShortTurbo | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
+0.192s
After |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
ShortTurbo | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
+0.205s
After |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
ShortTurbo | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
+0.219s
After |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
ShortTurbo | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
+0.231s
After |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
ShortTurbo | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
+0.241s
After |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
ShortTurbo | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
+0.252s
After |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
ShortTurbo | 2026-05-18 01:18:46 UTC | View |
| MoeTD (Moe) |
+0.271s
After |
-125.0 dBm | -17.00 dB | 1 |
ef
crxb
|
LongFast | 2026-05-18 01:18:46 UTC | View |
45
Total Receptions
1
Unique Gateways