FEED-4CKU model. For use with primary Focus reception antennas. Frequency: 3.7 ~ 4.2GHz. and 11.70 ~ 12.75GHz. Also available with wide Ku band range, Model 4CKU-WB 3.7 ~ 4.2 GHz and 10.95 ~ 12.75GHz. Also model of C-Band Circular Model 4CCKU and band C and Ku extended model 4CCKU.