These are bandpass filters for a new FM Tee Combiner for two FM stations in Missouri. The two three-section bandpass filters will combine the two stations and feed a new diplexed eight-bay ROTOTILLER® FM antenna. Most of the ROTOTILLER FM antennas built by ERI are made for only one FM channel and transmit a single channel. The antenna can also be designed to transmit two, three, or more FM stations from one antenna. In this case, the two FM stations are 13 MHz apart. The SHPX-8C3-SP FM antenna consists of two four-bay center-fed arrays combined with an additional center feed.