The Yaesu FTV-901R is a three band, VHF/UHF transverter. The basic unit comes with equipped with 144 MHz capability. You may add 50 or 430 MHz as options. Repeater offset is provided for 6 and 2 meters, and full duplex operation on OSCAR modes A/B/J is possible with an external receiver. It is designed to match the FT-901DM and FT-902DM.