September 2013 Issue
Levil iLevil AW: Cut-rate ADAHRS
If youre willing to fool with the plumbing, this portable ADS-B box will output honest, no-kidding airspeed. Still, its not reliable enough for backup.
Amidst the swarm of ADS-B portables we saw last spring was Levils iLevil, which combines ADS-B with a MEMS AHRS for display on cockpit tablets. (See the June 2013 Aviation Consumer for a report.) Levil has followed up with the $1395 AW model, which adds pitot/static sensing to the basic AHRS. So instead of GPS groundspeed and pressure altitude, the devicerunning through a tablet appwill display indicated airspeed and pressure altitude.
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