Copyright © 2016  Grand Rapids Technologies, Inc.                      

Electronic Flight Instrumentation for Experimental Aircraft Since 1991


ADS-B Receivers


Software Updates

Radio & Audio Panel

GPS Options

Electrical System

Every builder has his or her own taste when it comes to devices such as weather & traffic information, radios, transponders, and GPS units. We strive to give builders a choice when it comes to third-party equipment.  This page is an overview of popular choices of our customers, with equipment supplements for some to help you install and use your product to its full potential with a GRT EFIS system. Check this page often for updates, as we are always adding to our equipment supplement library and third-party vendor list.

GRT systems are specifically designed to play nice with other manufacturers’ equipment.

Compatible Equipment Center


General List of Interfacing Equipment

If the devices you want are not on this list, give us a call – we can work with you to develop the interface.