# Choosing an antenna
While Ardusimple offer such things as "calibrated" antennas for survey, you don't really need them. You have a choice to go either single, single with an IMU (we'll explain that later) or dual - and these antennas will work just fine.
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Being not-bright-green-and-yellow, they hide on the roof of your machine really well. And they're that cheap, they're not even worth stealing. Can't quite say the same about your FireStarters, eh...!
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