https://www.amazon.com/gp/product/B01N7RNFRJ/

Doesn't output NMEA but it puts out GDL90 format GPS weather and traffic. Many EFIS's support the data but check with your manufacturer.

That one unfortunately wont work.

Your GRT expects RS-232 voltage levels and that unit will only output TTL. It needs to have the right serial number/name assigned so that Stratux knows to use it for serial data. /u/strangerwithadvice can give you more details regarding that.

I have setup a GRT system using this hardware https://www.amazon.com/Stratux-Serial-Adapter-RS-232-RS-485/dp/B01N7RNFRJ/

The wiki article and the original document point to the Stratux store on Amazon. I originally followed that link to purchase the dongle. As of this time, it is listed as "Currently Unavailable." This is why I purchased the unit I did, not knowing it would need to be updated before it would work with the Stratux.