Today's Garmin® GNC® 300XL TSO takes its place with other navigation and communication pioneers, combining a powerful 12 parallel channel receiver with a 760 channel VHF transceiver with a C129a, A1 IFR certified moving map GPS/comm. This marries two of Garmin's product development strengths: crisp, high-detail moving map technology and Garmin's legacy of proven, approach-certified IFR GPS receivers.
The GNC 300XL TSO's Moving Map is exceptionally sharp, with the familiar yellow-on-black DSTN (doublesuper twist nematic) LCD display that won rave reviews in the VFR-only GPS 150XL and GNC 250XL. Individual pixels in these displays are transparent to the viewer, and SUAs actually appear as curved rings, with easily distinguishable alphanumeric characters and a high-resolution display that's readable from every angle in all lighting conditions. A photocell in the display automatically controls the intensity of the backlight and will reverse the display from black-on-yellow to yellow-on-black for maximum contrast in daylight or nighttime viewing. Aviators can also choose to make these adjustments manually depending on their individual preferences.