Originally Posted by twistedtree
Does everything work, or are there particular problems that you are trying to solve?
Do you have space identified to install the E140?
If things work, and all you want is to install the net radar scanner, then I would just do that, and leave the old one in place as a back up if there is room. This assumes the E120/140 can work with the Super HD, which I think they can, but you should confirm with Raymarine.
Bottom line is I wouldn't start replacing stuff unless something is broken or there is a specific new capability that you are after. With integrated systems, as soon as you start replacing one thing it very quickly becomes a slippery slope and you will find yourself doing a complete refit for big $$.
I can create room for the extra E140
if I install a HD Radar do I keep the old one (still working good)
I was thinking may be AIS