Yes, I'm saying the 942 (don't know about 811) provides a 12V power supply on the OTA antenna line which will power winegard sensar antennas. Voom accomplished this by using a diplexer-type device to send the 13/18 volt output of the box into the LNB at 13/18 V and send 12V into the antenna. The 942 provides 13/18V on the sat inputs, and 12V on the OTA input. See my simplified picture below.