Avionics Report

April 2015 Issue

SiriusXM, ADS-B Radar Compared

The Garmin GTN750 screenshots above compare NEXRAD images as delivered by SiriusXM satellite, left, and FIS-B ADS-B uplink, right. While WSI is the weather provider of both datalink products, there are some obvious and considerable differences. Note that both screens are displaying the same NEXRAD returns, at three minutes old, and at a 75-mile map range.

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