CONUS means that the beam covers the CONtinental US (lower 48 actually).A bit off-topic, but when I visit my favorite restaurant in New Philadelphia, Ohio, channel 5 (WEWS ABC) news has the best studio set and on-screen graphics I've ever seen!
Back on topic, I knew of CONUS/spotbeam, but not what they refer to, nor how they work. After viewing the map earlier, I understand what spotbeam is, but I am still not sure about CONUS. I take it that CONUS is an acronym as the letters are all capitalized, but no idea what it means.