Packet #1518217 Success

POSITION_APP packet from mtec/mobile (mtec) to !ffffffff

8
Total Receptions
8
Unique Gateways
7
Hop Count
36
Payload Bytes
Packet Information
Database ID: 1518217
Mesh Packet ID: 0x2bad601f
Used for correlation across gateways
Timestamp: 2025-11-02 14:41:47 UTC
From Node: mtec/mobile (mtec)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: Poncho@pft! | MedSlow (pft!)
Channel: LongFast
RSSI: -125 dBm
SNR: -13.5 dBm
Hop Info: 7/7 hops
Start: 7, Limit: 0
Relay Node: 0c MG , UGKH , 440c
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: 36 bytes
Decoded: Yes
Decoded Data:
Latitude:40.717517°
Longitude:-73.996698°
Altitude:30 m
Satellites:6
Precision:15 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:36 bytes
Gateway:!1f39475d
Channel:LongFast
Payload Type:POSITION_APP
Hop Count:7 / 7
Privacy Summary
Exposure Level:
Broadcast
Privacy Features:
✓ Direct LoRa transmission (not via MQTT)
✓ Gateway node ID tracked
+ 1 more...
Exposure Risks:
⚠ Visible to all nodes on channel
⚠ Default channel - no encryption
+ 3 more...
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !1f39475d
Node ID format
channel_id LongFast
Default public channel
packet MeshPacket (36 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 2787478458
Source node ID 		uint32
to 4294967295 (Broadcast)
Visible to all nodes 		uint32
decoded.portnum 3
POSITION_APP 		enum
decoded.payload_length 36 bytes size
hop_limit Not set uint32
hop_start 7
Initial hop limit 		uint32
hops_taken 7
Calculated: hop_start - hop_limit 		derived
rx_rssi -125.0 dBm
Signal strength at gateway 		int32
rx_snr -13.50 dB
Signal quality at gateway 		float
rx_time 1762094566
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 12
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1762094507.1611116
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: ~729.0m accuracy
Exposure Risks:
  • ⚠ Visible to all nodes on channel
  • ⚠ Default channel - no encryption
  • ⚠ Packet visible to MQTT subscribers
  • ⚠ Multi-hop path visible (7 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !1f39475d
Position Precision: 15 bits (~729.0m accuracy)
Position precision meters: 729.0
Signal Metrics: RSSI: -125.0 dBm
SNR: -13.50 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:POSITION_APP
Size:36 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "latitude": 40.7175168, "longitude": -73.9966976, "altitude": 30, "sats_in_view": 6, "precision_bits": 15 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!1f39475d", "channel_id": "LongFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2787478458, "to": 4294967295, "id": 732782623, "rx_time": 1762094566, "rx_snr": -13.5, "rx_rssi": -125, "hop_limit": 0, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 12, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d00004518150000e5d3181e25c86d0769280258cb0178178001a0fcc309980106b8010f", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 407175168, "longitude_i": -739966976, "altitude": 30, "time": 1762094536, "location_source": "LOC_INTERNAL", "PDOP": 203, "ground_speed": 23, "ground_track": 19988000, "sats_in_view": 6, "precision_bits": 15, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (36 bytes)
0d00004518150000e5d3181e25c86d0769280258cb0178178001a0fcc309980106b8010f
Hex Analysis:
Size:36 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
Poncho@pft! | MedSlow (pft!) Primary 0.000s
Reference 		-125.0 dBm -13.50 dB 7 0c MG , UGKH , 440c LongFast 2025-11-02 14:41:47 UTC Current
dkTowerBot (dkTB) -9.114s
Before 		-102.0 dBm -12.25 dB 3 7b 4b7b LongFast 2025-11-02 14:41:38 UTC View
JLO3 - HQ T-Echo (JLO3) -8.498s
Before 		-121.0 dBm -15.25 dB 3 7b 4b7b LongFast 2025-11-02 14:41:38 UTC View
aurelia (🧚) -8.352s
Before 		-104.0 dBm 3.75 dB 3 7b 4b7b LongFast 2025-11-02 14:41:38 UTC View
!b1b7dfe8 (dfe8) -5.461s
Before 		-55.0 dBm 6.50 dB 4 52 JLO3 LongFast 2025-11-02 14:41:41 UTC View
CBZ0 🚕 mobile (CBZ0) -5.203s
Before 		-119.0 dBm -13.25 dB 4 4c JLY3 , SST LongFast 2025-11-02 14:41:41 UTC View
DRP0 Astoria (DRP0) -4.040s
Before 		-71.0 dBm 6.00 dB 5 ac JJ00 , swam , 🌀 , A3WS , FF1 , 🌃 , 09ac , feac , 98ac LongFast 2025-11-02 14:41:43 UTC View
Claudiopolis-440c (440c) -2.138s
Before 		-101.0 dBm -9.25 dB 6 01 LongFast 2025-11-02 14:41:45 UTC View
8

Total Receptions

8

Unique Gateways