UAT

Cleared Direct Oct 18, 2026

UAT versus One-Zero-Nine-Zero Extended Squitter, the Two-Frequency ADS-B Split, and the Traffic Picture Gap Every General Aviation Pilot Is Flying With

The FAA's ADS-B system runs on two incompatible frequencies - UAT and 1090ES - creating real traffic display gaps every GA pilot should understand.

Vector

Cleared Direct Oct 12, 2026

The UAT Mandate, the Nine Seventy-Eight Megahertz Frequency the Rest of the World Rejected, and the Traffic Display Gap Most Pilots Don't Know Exists

Two ADS-B-compliant aircraft can be invisible to each other due to America's dual-frequency mandate - understanding why matters most in mountain terrain.

Vector

Cleared Direct Aug 12, 2026

Ten Ninety Versus Nine Seventy-Eight, the Two-Frequency ADS-B System America Built That No One Else Copied

Why the U.S. built ADS-B on two frequencies - 978 MHz and 1090 MHz - and what every pilot must know about traffic coverage.

Vector

Cleared Direct Jul 24, 2026

The Dual-Link Gamble - Why American ADS-B Runs on Two Frequencies and What Nine Seventy-Eight and Ten Ninety Really Mean for the Traffic on Your Screen

Why U.S. ADS-B runs on two frequencies - 978 MHz UAT and 1090ES - and what that split means for the traffic on your screen.

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