Help with *.ndb MAP file!

[dallas contractor]

FRom what I read this is used in aviation , it is the beacon that are used by pilots to help in navigation. So unless you need to fly it is no use to you.Finding nearby NDBs using GPS
In addition to a paper or online sectional map, NDBs can be found on the Flight Simulator Map view and your GPS. To get NDB info from the GPS, bring it up and press the NEAREST BUTTON. Now press the right side of the oval-shaped rocker button twice to take you to the nearest NDB page. Press the Cursor 'CRSR' button, to enter the page. (If you're using the GPS 500, use the arrows on the inner cursor 'CRSR' knob instead of the rocker.)