Tokyo ADS-B Flight Tracker — Live Aircraft Radar

Welcome to the Tokyo 24/7 Live Flight Tracker! 📡✈️
This stream displays real-time ADS-B data of aircraft flying over the Greater Tokyo area (including RJTT, RJAA).
This project of evaluation is powered by ARENA — a custom-built ADS-B receiver
performance evaluation platform. The radar view you see is
generated by stream1090 (a modified tar1090), and the receiver
quality you observe live is continuously evaluated by ARENA's
statistical analysis pipeline.
Perfect for studying, coding, or just relaxing while watching the skies.

📍 Location: Tsuchiura, Ibaraki, Japan
📡 Receiver RF Chain:
• Antenna: Vinnant 1090/8-P
• Adapter: Mini-Circuits NM-SM50+
• LNA/Filter: Uputronics 1090MHz Filtered LNA
• Coax Cable: Fujikura 5D-FB (2m, Custom by Cosmo Wave) & Shikoku Densen 2.5DS-QFB (0.5m, Custom by NATEC)
• SDR: Airspy Mini

💻 Software Pipeline & Source Code:
• Decoder: airspy_adsb → readsb
• Frontend: Custom modified tar1090 for live streaming
• Server: Ubuntu Server
• GitHub (ARENA Engine): https://github.com/yukimurata0421/arena-eval-engine

❤️ Supporting The Project
The Tokyo 24/7 Live Flight Tracker is the public face of ARENA, a long-term research project on ADS-B receiver performance evaluation. The stream itself is offered freely, but running the receiver chain (Airspy Mini, LNA, custom RF cabling), keeping a dedicated server online 24/7, and continuously improving the hardware does have real running costs.

If the project has been useful for your study, your work, or just for relaxation, contributions of any size help me keep it running and gradually improve the receiver setup over time. Tips are appreciated but never required — the stream stays free either way.

PayPal: https://paypal.me/mediamyuki

This continuous live radar view tracks hundreds of aircraft positions, altitudes, and flight paths over Tokyo and surrounding airspace in real time. Operated by aviation researcher Yuki Murata using a precision Airspy Mini receiver in Tsuchiura, the feed is ideal for aviation enthusiasts, pilots, researchers, and anyone curious about the constant flow of commercial and general aviation traffic feeding Japan's busiest airports. The ARENA project evaluates receiver performance and makes the resulting feed freely available—perfect for study, relaxation, or deep-dive aviation monitoring.