To alleviate congestion on the 1090 MHz band, the FAA created another option for ADS-B solutions that run on a dedicated 978 MHz band – Universal Access Transceiver, or UAT. 978 UAT radios can be configured to provide both ADS-B “Out” and “In” capability in a single product. The ADS-B “Out” broadcast on 978 MHz carries all the same tracking data sent by Extended Squitter (ES) transponders on 1090 MHz. However, on the ADS-B “In” side, the additional bandwidth afforded by the 978 MHz spectrum allows for a much more extensive list of data uplink services.
Do you fly above 18,000 feet?
YES– 978 UAT is not an option for you. You must pursue a 1090ES solution.
NO– 978 UAT may be a solutions that’s right for you. One of the 978 UAT Universal Access Transceivers listed below, transmitting a WAAS signal from an approved GPS navigator or a separate WAAS GPS receiver, will fulfill your ADS-B Out requirement.