What’s the difference between 1090 and 978?

What’s the difference between 1090 and 978?

Beyond the basic equipage issue, there are still a lot of questions to consider. One of the first is 1090 vs. 978. That is, should you install an ADS-B Out transponder that works on the 1090 MHz frequency (sometimes called 1090ES) or the 978 MHz frequency (sometimes called a 978 UAT)?

 
Garmin GDL 84

Garmin GDL 84

For U.S. aircraft owners seeking an easy, cost-efficient way to meet the requirements for ADS-B “Out” equipage – while enjoying the “In” benefits of subscription-free weather and traffic – the Garmin GDL 84 offers the ideal solution.

 
We are the ADS-B Experts

We are the ADS-B Experts

By now, you’ve probably heard of Automatic Dependent Surveillance-Broadcast (ADS-B) and the requirement for many airplanes to add an ADS-B Out transponder to the panel. But you may be confused about what exactly ADS-B is, why you should care and what you should do.

 
Understanding ADS-B traffic

Understanding ADS-B traffic

Unlike ADS-B weather, which is broadcast continuously, traffic is only transmitted in response to specific prompts. This can make ADS-B traffic very confusing–when does it work and when doesn’t it work?

 
ADS-B 101: what you need to know

ADS-B 101: what you need to know

Considering upgrading your panel to meet the ADS-B Out requirement? Here’s what you need to know, all written in plain English.