It appears the RVC file format is primarily used by one vendor.
“The RVC file type is primarily associated with ‘TNTmips’ by MicroImages, Inc.. Applies to the entire TNT product line, including a free viewer. The TNT products support fully integrated GIS, image processing, CAD, TIN, desktop cartography, and geospatial database management.”
If you did not create this you may want to ask if it is possible to get in another format for your use if you cannot open it. IT looks like there is very little other applications that can work with this format.