Modulation of a DC voltage to communicate from an antenna controller to a configurable antenna is disclosed. The DC voltage may communicate to both data and power circuits within the configurable antenna. The antenna controller and configurable antenna may be coupled by two electrical conductors over which both the modulated DC voltage and a radio frequency (RF) signal are communicated. By communicating both the RF signal and configuration data over the same two wire conductor, the configuration data can be communicated through a legacy RF connection in the antenna controller.