July 2017 Issue

Altitude Encoders: Cheaper If Not Smaller

As ADS-B demand ramps up, so go encoder sales. Price competition is fierce and Trans-Cal has responded with a new model.

Altitude encoders are the doorstops of the avionics world. You have to have one, but don’t expect a sweep through the list of available hardware to yield impressive lists of features and capabilities. After all, all the gadgets do is electronically deliver altitude data to a transponder that then reports your altitude to ATC—Mode C.

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