Packet #28665678 Success

POSITION_APP packet from GJ T1000 (GJ89) to !ffffffff

28
Total Receptions
28
Unique Gateways
7
Hop Count
34
Payload Bytes
Packet Information
Database ID: 28665678
Mesh Packet ID: 0xd7bc9323
Used for correlation across gateways
Timestamp: 2025-12-19 12:19:43 UTC
From Node: GJ T1000 (GJ89)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: Albacete_01 🛜 (Ab01)
Channel: MediumFast
RSSI: -104 dBm
SNR: -4.0 dBm
Hop Info: 7/7 hops
Start: 7, Limit: 0
Relay Node: 54 📍
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:!a0cc16fc
Channel:MediumFast
Payload Type:POSITION_APP
Hop Count:7 / 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 !a0cc16fc
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 Not set uint32
hop_start 7
Initial hop limit 		uint32
hops_taken 7
Calculated: hop_start - hop_limit 		derived
rx_rssi -104.0 dBm
Signal strength at gateway 		int32
rx_snr -4.00 dB
Signal quality at gateway 		float
rx_time 1766146783
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 84
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1766146783.576013
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 (7 hops)
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !a0cc16fc
Position Precision: 15 bits (~729.0m accuracy)
Position precision meters: 729.0
Signal Metrics: RSSI: -104.0 dBm
SNR: -4.00 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": "!a0cc16fc", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 2945126916, "to": 4294967295, "id": 3619459875, "rx_time": 1766146783, "rx_snr": -4.0, "rx_rssi": -104, "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": 84, "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
Albacete_01 🛜 (Ab01) Primary 0.000s
Reference 		-104.0 dBm -4.00 dB 7 54 📍 MediumFast 2025-12-19 12:19:43 UTC Current
CARREFOUR ea5wa (WA01) -10.871s
Before 		-110.0 dBm -6.25 dB 3 a4 📍 MediumFast 2025-12-19 12:19:32 UTC View
San_Pablo🗼 (SP00) -10.868s
Before 		-119.0 dBm -12.25 dB 3 a4 📍 MediumFast 2025-12-19 12:19:32 UTC View
EAL Station 1 🗼🌐 (EAL1) -10.821s
Before 		-110.0 dBm -4.50 dB 3 a4 📍 MediumFast 2025-12-19 12:19:32 UTC View
[samsepi0l] 📡🌐 (tlg0) -10.649s
Before 		-106.0 dBm -11.75 dB 4 61 TO1 MediumFast 2025-12-19 12:19:32 UTC View
X Wing 🚀 Kenobi (Knb2) -10.401s
Before 		-102.0 dBm 7.00 dB 4 61 TO1 MediumFast 2025-12-19 12:19:33 UTC View
Villarejo01 (VIL1) -10.264s
Before 		-116.0 dBm -13.25 dB 4 61 TO1 MediumFast 2025-12-19 12:19:33 UTC View
Venturada2 🗼🌞 (Vb2) -10.222s
Before 		-42.0 dBm 10.75 dB 4 10 Vb MediumFast 2025-12-19 12:19:33 UTC View
JAGO1_Cañaveral (JAGO) -10.132s
Before 		-120.0 dBm -11.00 dB 5 38 tlg0 MediumFast 2025-12-19 12:19:33 UTC View
Eagle’s Nest (EAGL) -10.122s
Before 		-124.0 dBm -14.75 dB 5 38 tlg0 MediumFast 2025-12-19 12:19:33 UTC View
XiaoWatt c4c8 🌐🔌 (c4c8) -10.092s
Before 		-100.0 dBm -10.00 dB 5 38 tlg0 MediumFast 2025-12-19 12:19:33 UTC View
Ocumare Norte🗼🌐 (RRN) -9.675s
Before 		-106.0 dBm -11.50 dB 4 f4 VSF MediumFast 2025-12-19 12:19:33 UTC View
Meshtastic 1760 (1760) -9.311s
Before 		-135.0 dBm -12.50 dB 4 f4 VSF MediumFast 2025-12-19 12:19:34 UTC View
GRN1-Base🗼🌐 🔋 (GRN1) -9.272s
Before 		-103.0 dBm -6.50 dB 4 f4 VSF MediumFast 2025-12-19 12:19:34 UTC View
Karman’s HeltecV4 Beta (KHV4) -9.173s
Before 		-101.0 dBm -8.50 dB 6 74 CN1 MediumFast 2025-12-19 12:19:34 UTC View
Quixote_JS8_7 (QXT7) -9.130s
Before 		-18.0 dBm 11.00 dB 6 - MediumFast 2025-12-19 12:19:34 UTC View
Quixote_JS8_5🗼🌐 (QXT5) -9.128s
Before 		-114.0 dBm -8.50 dB 6 - MediumFast 2025-12-19 12:19:34 UTC View
Meshtastic 18a4 (18a4) -9.025s
Before 		Unknown Unknown 5 60 1760 MediumFast 2025-12-19 12:19:34 UTC View
PXT_Home (PXT1) -8.948s
Before 		-108.0 dBm 0.25 dB 6 11 BAS1 MediumFast 2025-12-19 12:19:34 UTC View
Karabanchel_Baldur (KarB) -8.910s
Before 		-94.0 dBm -1.25 dB 5 1c 1f1c , 🐷 MediumFast 2025-12-19 12:19:34 UTC View
Mec Rocket Meco (MRM) -8.770s
Before 		-114.0 dBm -13.75 dB 5 08 JPL2 MediumFast 2025-12-19 12:19:34 UTC View
P3 iGate 🏠🌐 (P3N2) -8.717s
Before 		-39.0 dBm 10.75 dB 6 25 P3N1 MediumFast 2025-12-19 12:19:34 UTC View
🤖 Nicolas Cage 🌐 (Cage) -8.606s
Before 		-96.0 dBm 9.75 dB 5 1c 🐷 MediumFast 2025-12-19 12:19:34 UTC View
tizon (Sylv) -8.579s
Before 		-98.0 dBm 7.75 dB 5 1c 🐷 MediumFast 2025-12-19 12:19:34 UTC View
Red Hook (Red) -8.551s
Before 		-57.0 dBm 9.25 dB 5 1c 🐷 MediumFast 2025-12-19 12:19:35 UTC View
Test_Skynet_01 (TS01) -8.532s
Before 		-100.0 dBm 7.75 dB 5 1c 🐷 MediumFast 2025-12-19 12:19:35 UTC View
Justicia Meshtastic b0e4 🏢 (b0e4) -8.357s
Before 		-117.0 dBm -12.25 dB 6 25 🌇 MediumFast 2025-12-19 12:19:35 UTC View
JP Terraza (JPT1) -7.203s
Before 		-99.0 dBm 2.50 dB 7 37 KTS1 , 1337 MediumFast 2025-12-19 12:19:36 UTC View
28

Total Receptions

28

Unique Gateways