I have a Raymarine RL80C I just took off of my boat, I upgraded to a HD Unit. It is a 10.4" Color Display and the antenna is a 4K 48" Open Array S5 is the model. It was originally installed on my boat in 2003. The interconnect cable was damaged uninstalling the unit so that is something that would need to be replaced, it is available at Raymarine's website for $275 . This unit is in working order. Includes sunshade cover. I am selling this unit for $1000 , I just don't have the room to store it. I will also have the 7" Chartplotter which will network with this unit available for sale very soon as well.
This unit is sold , but I am going to have an RL70 GPS/ Sounder with DSM250 sounder and ray120 antenna available in a week or two if anyone is interested .