In the VDX group, we have a SDR Kiwi model from 0 to 30 Mhz available to the subscribers, to which we have connected three antennas, a cubic antenna of a vertical polarized element at thirteen meters high (model CQ11 of Big-signal for the 11 meter band, we also have a cubic of four elements (horizontal) at thirteen meters, for the same band, and soon we will have a long wire antenna of about 200 meters for the rest of the bands. Said SDR, is in the best position in the city of Valencia at five hundred meters altitude and twenty kilometers from the capital.