perez.thea•24d agoMost Upvoted

Serious question about 1090ES vs UAT for traffic receivers

I spent the last few months messing around with two different ADS-B receivers for situational awareness in the shop. One was a 1090ES only unit and the other was a dual band that also picked up UAT from stuff like weather and traffic. I honestly thought the single band would be fine since most commercial traffic uses 1090. But after about 3 weeks of running both side by side near Denver, the dual band caught a ton of smaller GA planes that the 1090 totally missed. It made a huge difference when I was testing some antenna placements on a Cessna 172. Has anyone else noticed a big gap in coverage when sticking to just one frequency band?

2 comments

2 Comments

the_angela24d ago

That lines up with something I've noticed just in how people pick their tools in general. It's like when someone only uses one radio station to find out about local events and then acts surprised when they miss half the community stuff going on. Having that extra UAT band basically doubles your net, same way talking to both the old timers and the new guys gets you a fuller picture of what's actually happening around you.

harris.emma24d ago

Man that's a solid real world test right there. Did you notice if the UAT band picked up more traffic during certain times of day or in specific weather conditions? I'm curious if it's just a coverage thing or if the smaller planes are actively switching frequencies based on what's going on around them.