For Sale is a Yaesu YO-301 solid-state monitorscope that covers 1.8 to 54 Mhz. It is a measuring instrument for amateur radio use that monitors on the air signal and also is a oscilloscope. I am selling as-is as it hasn't been in use for several years. When recently powered up it displayed a slight horizontal line that disappeared. IT WILL NEED REPAIR. Possibly the power supply!! It will also come with the owners manual. This unit compared very well with the Kenwood SM-220 monitorscope.