Winegard (SWM-840 Switch Kit Winegard SWM-8 Switch Kit The Winegard SWM-840 SWM-8 Switch Kit allows the use of DIRECTV SWM-only technology receivers with non-SWM Winegard mobile satellite TV antennas The SWM-840 Kit includes: SWM-8 switch, power inserter, 4-way splitter, and mounting hardware Note that Model SK-SWM3 SWM TRAVELER antenna (Coast 80828) operates with DIRECTV SWM technology without separate accessories