The Raystar 114 is an older antennae. Check and see if the Raystar 120, 125, or 130 will work with your display. The 120 and 125 support both SeaTalk and NMEA. I'm not sure about the 130. You'll have better luck finding those models used on eBay.
Be careful, all those models have internal, non -serviceable batteries which aid in Sat. location. when dead it can take up to 10 min. to return a fix and coordinates.