The Micron Wireless DDH2. It Holds 2 SDR Small Diversity Receivers and one pair of antennas feeds both receivers. The receivers are also powered via the antenna sockets so there is no need for internal batteries. Additional RF outputs allow an extra receiver to be powered from the DDH using the cables provided. Its powered via a 4 pin hires connector and fits conveniently in a mixer bag. This DDH 2 is on Channels 38/39 for use on frequency range of 606 - 638 mhz.