Packet #40227101 Success

POSITION_APP packet from Zap South b734 (ZapS) to !ffffffff

45
Total Receptions
1
Unique Gateways
2
Hop Count
32
Payload Bytes
Packet Information
Database ID: 40227101
Mesh Packet ID: 0x1dc4422a
Used for correlation across gateways
Timestamp: 2026-05-18 02:42:52 UTC
From Node: Zap South b734 (ZapS)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: MoeTD (Moe)
Channel: ShortFast
RSSI: -127 dBm
SNR: -18.5 dBm
Hop Info: 2/3 hops
Start: 3, Limit: 1
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:77 m
Satellites:21
Precision:13 bits
Raw Packet Analysis
Complete field breakdown and MQTT privacy/exposure analysis
Packet 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:2 / 3
Privacy Summary
Exposure Level:
Broadcast
Privacy Features:
✓ 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...
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
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

FieldValueType
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 1
Remaining hops allowed 		uint32
hop_start 3
Initial hop limit 		uint32
hops_taken 2
Calculated: hop_start - hop_limit 		derived
rx_rssi -127.0 dBm
Signal strength at gateway 		int32
rx_snr -18.50 dB
Signal quality at gateway 		float
rx_time 1779072172
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 1779072172.5960472
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: !4ed3691c
Position Precision: 13 bits (~2900.0m accuracy)
Position precision meters: 2900.0
Signal Metrics: RSSI: -127.0 dBm
SNR: -18.50 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": 77, "sats_in_view": 21, "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": 499401258, "rx_time": 1779072172, "rx_snr": -18.5, "rx_rssi": -127, "hop_limit": 1, "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": "0d0000641c1500009ce0184d25aa7c0a6a28023d607c0a6a603c980115b8010d", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 476315648, "longitude_i": -526647296, "altitude": 77, "time": 1779072170, "location_source": "LOC_INTERNAL", "timestamp": 1779072096, "HDOP": 60, "sats_in_view": 21, "precision_bits": 13, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (32 bytes)
0d0000641c1500009ce0184d25aa7c0a6a28023d607c0a6a603c980115b8010d
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 packet
Correlation: Using Mesh Packet ID
Reception Locations

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 		-127.0 dBm -18.50 dB 2 ef crxb ShortFast 2026-05-18 02:42:52 UTC Current
MoeTD (Moe) -0.368s
Before 		-127.0 dBm -18.50 dB 2 ef crxb LongFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) -0.353s
Before 		-127.0 dBm -18.50 dB 2 ef crxb LongFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) -0.339s
Before 		-127.0 dBm -18.50 dB 2 ef crxb LongFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) -0.320s
Before 		-127.0 dBm -18.50 dB 2 ef crxb LongFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) -0.308s
Before 		-127.0 dBm -18.50 dB 2 ef crxb LongFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) -0.293s
Before 		-127.0 dBm -18.50 dB 2 ef crxb LongFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) -0.277s
Before 		-127.0 dBm -18.50 dB 2 ef crxb LongFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) -0.266s
Before 		-127.0 dBm -18.50 dB 2 ef crxb LongFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) -0.254s
Before 		-127.0 dBm -18.50 dB 2 ef crxb LongFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) -0.241s
Before 		-127.0 dBm -18.50 dB 2 ef crxb LongFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) -0.228s
Before 		-127.0 dBm -18.50 dB 2 ef crxb LongFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) -0.212s
Before 		-127.0 dBm -18.50 dB 2 ef crxb MediumFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) -0.198s
Before 		-127.0 dBm -18.50 dB 2 ef crxb MediumFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) -0.181s
Before 		-127.0 dBm -18.50 dB 2 ef crxb MediumFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) -0.164s
Before 		-127.0 dBm -18.50 dB 2 ef crxb MediumFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) -0.150s
Before 		-127.0 dBm -18.50 dB 2 ef crxb MediumFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) -0.137s
Before 		-127.0 dBm -18.50 dB 2 ef crxb MediumFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) -0.122s
Before 		-127.0 dBm -18.50 dB 2 ef crxb MediumFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) -0.108s
Before 		-127.0 dBm -18.50 dB 2 ef crxb MediumFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) -0.096s
Before 		-127.0 dBm -18.50 dB 2 ef crxb MediumFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) -0.083s
Before 		-127.0 dBm -18.50 dB 2 ef crxb MediumFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) -0.072s
Before 		-127.0 dBm -18.50 dB 2 ef crxb MediumFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) -0.059s
Before 		-127.0 dBm -18.50 dB 2 ef crxb ShortFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) -0.045s
Before 		-127.0 dBm -18.50 dB 2 ef crxb ShortFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) -0.031s
Before 		-127.0 dBm -18.50 dB 2 ef crxb ShortFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) -0.017s
Before 		-127.0 dBm -18.50 dB 2 ef crxb ShortFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) +0.016s
After 		-127.0 dBm -18.50 dB 2 ef crxb ShortFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) +0.030s
After 		-127.0 dBm -18.50 dB 2 ef crxb ShortFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) +0.048s
After 		-127.0 dBm -18.50 dB 2 ef crxb ShortFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) +0.062s
After 		-127.0 dBm -18.50 dB 2 ef crxb ShortFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) +0.075s
After 		-127.0 dBm -18.50 dB 2 ef crxb ShortFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) +0.089s
After 		-127.0 dBm -18.50 dB 2 ef crxb ShortFast 2026-05-18 02:42:52 UTC View
MoeTD (Moe) +0.106s
After 		-127.0 dBm -18.50 dB 2 ef crxb ShortTurbo 2026-05-18 02:42:52 UTC View
MoeTD (Moe) +0.120s
After 		-127.0 dBm -18.50 dB 2 ef crxb ShortTurbo 2026-05-18 02:42:52 UTC View
MoeTD (Moe) +0.135s
After 		-127.0 dBm -18.50 dB 2 ef crxb ShortTurbo 2026-05-18 02:42:52 UTC View
MoeTD (Moe) +0.148s
After 		-127.0 dBm -18.50 dB 2 ef crxb ShortTurbo 2026-05-18 02:42:52 UTC View
MoeTD (Moe) +0.161s
After 		-127.0 dBm -18.50 dB 2 ef crxb ShortTurbo 2026-05-18 02:42:52 UTC View
MoeTD (Moe) +0.174s
After 		-127.0 dBm -18.50 dB 2 ef crxb ShortTurbo 2026-05-18 02:42:52 UTC View
MoeTD (Moe) +0.188s
After 		-127.0 dBm -18.50 dB 2 ef crxb ShortTurbo 2026-05-18 02:42:52 UTC View
MoeTD (Moe) +0.204s
After 		-127.0 dBm -18.50 dB 2 ef crxb ShortTurbo 2026-05-18 02:42:52 UTC View
MoeTD (Moe) +0.237s
After 		-127.0 dBm -18.50 dB 2 ef crxb ShortTurbo 2026-05-18 02:42:52 UTC View
MoeTD (Moe) +0.266s
After 		-127.0 dBm -18.50 dB 2 ef crxb ShortTurbo 2026-05-18 02:42:52 UTC View
MoeTD (Moe) +0.309s
After 		-127.0 dBm -18.50 dB 2 ef crxb ShortTurbo 2026-05-18 02:42:52 UTC View
MoeTD (Moe) +0.336s
After 		-127.0 dBm -18.50 dB 2 ef crxb LongFast 2026-05-18 02:42:52 UTC View
45

Total Receptions

1

Unique Gateways