traffic display

1090ES ADS-B ADS-R aviation surveillance TIS-B UAT UAT 978

Cleared Direct Aug 3, 2026

ADS-R, the Rebroadcast That Vouches for You, and Why the Airplane on the Other Frequency Is Invisible Until a Ground Station Ties the Picture Together

ADS-R is why your ADS-B traffic display can be lying to you - here's how the dual-link system works and why you need ADS-B Out.

Vector

Cleared Direct Jul 22, 2026

The Dual-Link Gamble - Why American ADS-B Runs on Two Frequencies, and the Ghost Targets That TIS-B Was Built to Chase Down

Why US ADS-B uses two frequencies (978 and 1090 MHz), how TIS-B relays traffic between them, and why ghost targets appear.

Vector