Satellite TV Antenna Single Wire Multi-Switch Kit; Provides SWM (Single Wire Multi Switch) Operation Compatibility To Winegard Satellite TV Antennas That Do Not Operate With Multi-Switch Technology; For DIRECTV ®; With PI-28 or PI-29 Power Inverter and SWM-Splitter. Provides SWM (Single Wire Multi Switch) Operation Compatibility To Winegard Satellite TV Antennas. Allows the use of DIRECTV SWM (single-wire multiswitch) only technology receivers with non-SWM Winegard mobile satellite TV antennas.