I experimented with trying to get my new base to connect to my TMX-2050 today and was not successful because I do not have a radio connected to my system.  5 years ago I changed my AG-815 to one with two GPS receivers so I could use it for TrueTracker implement steering.  We were using RTX at the time so we didn't get it with a 900 mhz radio.  Now AgRemote won't let me make any changes because there is no radio.  I may have to try the VRS route with this display.  What does a VRS unlock cost?