Outside of the normal requirements you must follow when conducting a sole source acquisition, we could find no special acquisition regulation requirements in the VAAR that you must follow (note: DoD personnel do have special requirements they must follow in similar situations as the DFARS supplements FAR part 11 for those type of acquisitions).

That said, if you are purchasing these radios for a VA medical facility there certainly may be specifications that must be used so as not to interfere with any other equipment being used. We are making the assumption that your custormer (hopefully) knows all of those and has built that into the requirement.