Packet #29868550 Success

POSITION_APP packet from CRISTALMOS-BASE1 (BAS1) to !ffffffff

13
Total Receptions
13
Unique Gateways
0
Hop Count
23
Payload Bytes
Packet Information
Database ID: 29868550
Mesh Packet ID: 0xac4cbe47
Used for correlation across gateways
Timestamp: 2025-12-24 17:19:03 UTC
From Node: CRISTALMOS-BASE1 (BAS1)
To Node: !ffffffff (ffff)
Success: Processed
Protocol: POSITION_APP
Port: 3
Gateway: Jolu base (JL1)
Channel: MediumFast
RSSI: -123 dBm
SNR: -12.25 dBm
Hop Info: 0/3 hops
Start: 3, Limit: 3
Relay Node: 11 BAS1
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: 23 bytes
Decoded: Yes
Decoded Data:
Latitude:40.319795°
Longitude:-3.855565°
Altitude:652 m
Precision:19 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:23 bytes
Gateway:!a0cb20bc
Channel:MediumFast
Payload Type:POSITION_APP
Hop Count:Unknown / 3
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 !a0cb20bc
Node ID format
channel_id MediumFast
packet MeshPacket (23 bytes)
Contains the actual mesh network packet
MeshPacket Fields

Core mesh packet with routing and payload information

FieldValueType
from 1296786961
Source node ID 		uint32
to 4294967295 (Broadcast)
Visible to all nodes 		uint32
decoded.portnum 3
POSITION_APP 		enum
decoded.payload_length 23 bytes size
hop_limit 3
Remaining hops allowed 		uint32
hop_start 3
Initial hop limit 		uint32
hops_taken 0
Calculated: hop_start - hop_limit 		derived
rx_rssi -123.0 dBm
Signal strength at gateway 		int32
rx_snr -12.25 dB
Signal quality at gateway 		float
rx_time 1766596589
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 17
Relay node ID 		uint32
tx_after Not set uint32
timestamp 1766596743.7257123
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
  • ✓ Zero-hop: direct from source to MQTT gateway
Exposure Risks:
  • ⚠ Visible to all nodes on channel
  • ⚠ Packet visible to MQTT subscribers
  • ⚠ Full GPS precision shared
  • ⚠ RF signal metrics exposed (location inference possible)
MQTT-Specific Fields
Gateway ID: !a0cb20bc
Position Precision: 19 bits (~45.0m accuracy)
Position precision meters: 45.0
Zero Hop Policy: Enabled
Direct gateway connection
Signal Metrics: RSSI: -123.0 dBm
SNR: -12.25 dB
Complete Payload Analysis

Detailed breakdown of all payload fields and decoded data

Payload Metadata:
Protocol:POSITION_APP
Size:23 bytes
Decoded: Yes
Complete Payload Data (JSON):
{ "latitude": 40.3197952, "longitude": -3.8555648, "altitude": 652, "sats_in_view": null, "precision_bits": 19 }
Complete Protobuf Decode (JSON)
{ "service_envelope": { "gateway_id": "!a0cb20bc", "channel_id": "MediumFast", "packet": "MeshPacket (see mesh_packet below)" }, "mesh_packet": { "from": 1296786961, "to": 4294967295, "id": 2890710599, "rx_time": 1766596589, "rx_snr": -12.25, "rx_rssi": -123, "hop_limit": 3, "hop_start": 3, "via_mqtt": 0, "want_ack": 0, "priority": 0, "delayed": 0, "channel_index": null, "pki_encrypted": 0, "next_hop": 0, "relay_node": 17, "tx_after": 0, "decoded": { "portnum": 3, "payload": "0d005008181500b0b3fd188c0528017800800100b80113", "want_response": null, "dest": null, "source": null, "request_id": null, "reply_id": null, "emoji": null, "parsed_payload": { "latitude_i": 403197952, "longitude_i": -38555648, "altitude": 652, "location_source": "LOC_MANUAL", "ground_speed": 0, "ground_track": 0, "precision_bits": 19, "type": "protobuf", "portnum": "POSITION_APP", "message_class": "Position" } } } }
Raw Packet Data (23 bytes)
0d005008181500b0b3fd188c0528017800800100b80113
Hex Analysis:
Size:23 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
Jolu base (JL1) Primary 0.000s
Reference 		-123.0 dBm -12.25 dB 0 11 BAS1 MediumFast 2025-12-24 17:19:03 UTC Current
🎄 SkG@Home 📡🌐 (SkGH) +0.566s
After 		-103.0 dBm -12.00 dB 0 11 BAS1 MediumFast 2025-12-24 17:19:04 UTC View
Karabanchel_Baldur (KarB) +1.792s
After 		-96.0 dBm -0.50 dB 2 1c 1f1c , 🐷 MediumFast 2025-12-24 17:19:05 UTC View
🤖 Nicolas Cage 🌐 (Cage) +2.068s
After 		-98.0 dBm 6.75 dB 2 1c 🐷 MediumFast 2025-12-24 17:19:05 UTC View
tizon (Sylv) +2.115s
After 		-102.0 dBm 5.25 dB 2 1c 🐷 MediumFast 2025-12-24 17:19:05 UTC View
Getafe ☀️ (GTF) +2.145s
After 		-120.0 dBm -11.00 dB 2 1c 🐷 MediumFast 2025-12-24 17:19:05 UTC View
Venturada2 🗼🌞 (Vb2) +2.347s
After 		-109.0 dBm -8.75 dB 2 cb RPT5 MediumFast 2025-12-24 17:19:06 UTC View
Ocumare Norte🗼🌐 (RRN) +2.580s
After 		-104.0 dBm -9.50 dB 3 b0 Sir , Vb2 MediumFast 2025-12-24 17:19:06 UTC View
[samsepi0l] 📡🌐 (tlg0) +2.628s
After 		-99.0 dBm -5.75 dB 3 b0 PUPM , Vb2 MediumFast 2025-12-24 17:19:06 UTC View
XiaoWatt c4c8 🌐🔌 (c4c8) +2.635s
After 		-76.0 dBm 9.25 dB 3 b0 Sir , Vb2 MediumFast 2025-12-24 17:19:06 UTC View
GRN1-Base🗼🌐 🔋 (GRN1) +2.849s
After 		-98.0 dBm -2.00 dB 3 b0 Sir , Vb2 MediumFast 2025-12-24 17:19:06 UTC View
Skynet (Sky) +9.573s
After 		Unknown 11.25 dB 3 ac 0001 MediumFast 2025-12-24 17:19:13 UTC View
0001 (49ac) +164.435s
After 		-79.0 dBm -9.25 dB 2 1c 🐷 MediumFast 2025-12-24 17:21:48 UTC View
13

Total Receptions

13

Unique Gateways