Packet #28665643 Success

POSITION_APP packet from GJ T1000 (GJ89) to !ffffffff

28
Total Receptions
28
Unique Gateways
4
Hop Count
34
Payload Bytes
Packet Information
Database ID: 28665643
Mesh Packet ID: 0xd7bc9323
Used for correlation across gateways
Timestamp: 2025-12-19 12:19:33 UTC
From Node: GJ T1000 (GJ89)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: X Wing 🚀 Kenobi (Knb2)
Channel: MediumFast
RSSI: -102 dBm
SNR: 7.0 dBm
Hop Info: 4/7 hops
Start: 7, Limit: 3
Relay Node: 61 TO1
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: 34 bytes
Decoded: Yes
Decoded Data:
Latitude:38.187827°
Longitude:-1.893990°
Altitude:601 m
Satellites:7
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:34 bytes
Gateway:!112bbb6d
Channel:MediumFast
Payload Type:POSITION_APP
Hop Count:4 / 7
Privacy Summary
Exposure Level:
Broadcast
Privacy Features:
✓ 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...
MQTT ServiceEnvelope Fields

MQTT ServiceEnvelope contains the MeshPacket plus routing metadata

FieldValue
gateway_id !112bbb6d
Node ID format
channel_id MediumFast
packet MeshPacket (34 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 2945126916
Source node ID 		uint32
to 4294967295 (Broadcast)
Visible to all nodes 		uint32
decoded.portnum 3
POSITION_APP 		enum
decoded.payload_length 34 bytes size
hop_limit 3
Remaining hops allowed 		uint32
hop_start 7
Initial hop limit 		uint32
hops_taken 4
Calculated: hop_start - hop_limit 		derived
rx_rssi -102.0 dBm
Signal strength at gateway 		int32
rx_snr 7.00 dB
Signal quality at gateway 		float
rx_time 1766146773
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 97
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1766146773.1751206
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: ~729.0m accuracy
Exposure Risks:
  • ⚠ Visible to all nodes on channel
  • ⚠ Packet visible to MQTT subscribers
  • ⚠ Multi-hop path visible (4 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !112bbb6d
Position Precision: 15 bits (~729.0m accuracy)
Position precision meters: 729.0
Signal Metrics: RSSI: -102.0 dBm
SNR: 7.00 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:POSITION_APP
Size:34 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "latitude": 38.1878272, "longitude": -1.8939904, "altitude": 601, "sats_in_view": 7, "precision_bits": 15 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!112bbb6d", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2945126916, "to": 4294967295, "id": 3619459875, "rx_time": 1766146773, "rx_snr": 7.0, "rx_rssi": -102, "hop_limit": 3, "hop_start": 7, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 97, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d0000c316150000dffe18d90425d9424569280258ad017800800100980107b8010f", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 381878272, "longitude_i": -18939904, "altitude": 601, "time": 1766146777, "location_source": "LOC_INTERNAL", "PDOP": 173, "ground_speed": 0, "ground_track": 0, "sats_in_view": 7, "precision_bits": 15, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (34 bytes)
0d0000c316150000dffe18d90425d9424569280258ad017800800100980107b8010f
Hex Analysis:
Size:34 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
X Wing 🚀 Kenobi (Knb2) Primary 0.000s
Reference 		-102.0 dBm 7.00 dB 4 61 TO1 MediumFast 2025-12-19 12:19:33 UTC Current
CARREFOUR ea5wa (WA01) -0.470s
Before 		-110.0 dBm -6.25 dB 3 a4 📍 MediumFast 2025-12-19 12:19:32 UTC View
San_Pablo🗼 (SP00) -0.467s
Before 		-119.0 dBm -12.25 dB 3 a4 📍 MediumFast 2025-12-19 12:19:32 UTC View
EAL Station 1 🗼🌐 (EAL1) -0.420s
Before 		-110.0 dBm -4.50 dB 3 a4 📍 MediumFast 2025-12-19 12:19:32 UTC View
[samsepi0l] 📡🌐 (tlg0) -0.248s
Before 		-106.0 dBm -11.75 dB 4 61 TO1 MediumFast 2025-12-19 12:19:32 UTC View
Villarejo01 (VIL1) +0.137s
After 		-116.0 dBm -13.25 dB 4 61 TO1 MediumFast 2025-12-19 12:19:33 UTC View
Venturada2 🗼🌞 (Vb2) +0.179s
After 		-42.0 dBm 10.75 dB 4 10 Vb MediumFast 2025-12-19 12:19:33 UTC View
JAGO1_Cañaveral (JAGO) +0.269s
After 		-120.0 dBm -11.00 dB 5 38 tlg0 MediumFast 2025-12-19 12:19:33 UTC View
Eagle’s Nest (EAGL) +0.279s
After 		-124.0 dBm -14.75 dB 5 38 tlg0 MediumFast 2025-12-19 12:19:33 UTC View
XiaoWatt c4c8 🌐🔌 (c4c8) +0.309s
After 		-100.0 dBm -10.00 dB 5 38 tlg0 MediumFast 2025-12-19 12:19:33 UTC View
Ocumare Norte🗼🌐 (RRN) +0.726s
After 		-106.0 dBm -11.50 dB 4 f4 VSF MediumFast 2025-12-19 12:19:33 UTC View
Meshtastic 1760 (1760) +1.090s
After 		-135.0 dBm -12.50 dB 4 f4 VSF MediumFast 2025-12-19 12:19:34 UTC View
GRN1-Base🗼🌐 🔋 (GRN1) +1.129s
After 		-103.0 dBm -6.50 dB 4 f4 VSF MediumFast 2025-12-19 12:19:34 UTC View
Karman’s HeltecV4 Beta (KHV4) +1.228s
After 		-101.0 dBm -8.50 dB 6 74 CN1 MediumFast 2025-12-19 12:19:34 UTC View
Quixote_JS8_7 (QXT7) +1.271s
After 		-18.0 dBm 11.00 dB 6 - MediumFast 2025-12-19 12:19:34 UTC View
Quixote_JS8_5🗼🌐 (QXT5) +1.273s
After 		-114.0 dBm -8.50 dB 6 - MediumFast 2025-12-19 12:19:34 UTC View
Meshtastic 18a4 (18a4) +1.376s
After 		Unknown Unknown 5 60 1760 MediumFast 2025-12-19 12:19:34 UTC View
PXT_Home (PXT1) +1.453s
After 		-108.0 dBm 0.25 dB 6 11 BAS1 MediumFast 2025-12-19 12:19:34 UTC View
Karabanchel_Baldur (KarB) +1.491s
After 		-94.0 dBm -1.25 dB 5 1c 1f1c , 🐷 MediumFast 2025-12-19 12:19:34 UTC View
Mec Rocket Meco (MRM) +1.631s
After 		-114.0 dBm -13.75 dB 5 08 JPL2 MediumFast 2025-12-19 12:19:34 UTC View
P3 iGate 🏠🌐 (P3N2) +1.684s
After 		-39.0 dBm 10.75 dB 6 25 P3N1 MediumFast 2025-12-19 12:19:34 UTC View
🤖 Nicolas Cage 🌐 (Cage) +1.795s
After 		-96.0 dBm 9.75 dB 5 1c 🐷 MediumFast 2025-12-19 12:19:34 UTC View
tizon (Sylv) +1.822s
After 		-98.0 dBm 7.75 dB 5 1c 🐷 MediumFast 2025-12-19 12:19:34 UTC View
Red Hook (Red) +1.850s
After 		-57.0 dBm 9.25 dB 5 1c 🐷 MediumFast 2025-12-19 12:19:35 UTC View
Test_Skynet_01 (TS01) +1.868s
After 		-100.0 dBm 7.75 dB 5 1c 🐷 MediumFast 2025-12-19 12:19:35 UTC View
Justicia Meshtastic b0e4 🏢 (b0e4) +2.044s
After 		-117.0 dBm -12.25 dB 6 25 🌇 MediumFast 2025-12-19 12:19:35 UTC View
JP Terraza (JPT1) +3.198s
After 		-99.0 dBm 2.50 dB 7 37 KTS1 , 1337 MediumFast 2025-12-19 12:19:36 UTC View
Albacete_01 🛜 (Ab01) +10.401s
After 		-104.0 dBm -4.00 dB 7 54 📍 MediumFast 2025-12-19 12:19:43 UTC View
28

Total Receptions

28

Unique Gateways