Can I caliper brakes to the Robinson V2 frame?

The Robinson V2 frame is not intended for use with caliper brakes, however they could potentially be fitted if required.
The frame dimensions (rear) are specified at 370mm axle to brake pivot, meaning the drop needed is 60mm depending on manufacturing tolerances. The fork dimensions (front) are specified at 375mm axle to brake pivot, meaning the drop needed is 60mm depending on manufacturing tolerances.

An example of a suitable brake would be the Dia-Compe BRS202