FCV587 8.4" Color Fishfinder Combo with 600W Transom Mount Transducer FCV587 The FCV587 is a dual frequency (50 kHz and 200 kHz) Color LCD Sounder featuring Furuno's DSP technology. The FCV587 displays underwater conditions in 8, 16 or 64 colors on a super-bright 8.4" LCD screen. Features: Dual-Frequency 50/200 kHz DSP Filter makes the picture clearer and easier to discriminate between baitfish an