I'm sorry Nigel but it's not superior at all, it's downright dangerous. The adoption of UAT in the USA is a mistake. With UAT based ADS-B, you are invisible to commercial aircraft! TCAS is unable to see UAT. So Qantas Link, Rex, the RFDS etc can't see you. ATC can but that is of minimal use to us. Datalinked weather is a nice bit of window dressing but not at the expense of 76,000kg of high-speed rolled sheet metal doing 300kts not being able to see me!
Case iPad transmission > We should be pushing the UAT version of ADS-B, far superior to 1090 > transponder technology and offers a full datalink capability so weather > warnings, ATC directions etc can be broadcasted. We only went down the road > of using 1090 here because a lot of the commercial aircraft were fitted with > mode S transponders and only needed to add an approved GPS source to go > ADS-B >
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