Product Sheet TTC XPDR-2400 Radar Enhancing C-Band Transponder Product Sheet Download the Product Sheet share The XPDR-2400 series transponder is the next generation of C-band transponders. It is used primarily to augment and enhance the tracking capabilities of C-band ground radars. Download Resource Login to download this resource Username Enter your Curtiss-Wright Defense Solutions username. Password Enter the password that accompanies your username. Don’t have an account?Register here.