AOR SDU-5600 color spectrum display for several AOR and Icom receivers. Works with the AOR-5000, 8600 series, and 3000 with mod. Also works with some Icom receivers. Excellent working condition, and provides a nice overview of various frequency ranges visually. Includes interconnect cables and AC power cable for the unit. I used this display with my AOR-5000. Selectable IF input range. Nice clear display with nominal use.