Quote Originally Posted by rnvinc View Post
I will make a mental note of this myself...

I didn't even think about the entire Nav tab disappearing when no antenna is recognized...

Let us know how things work out Don...

Rickie
I have a 798 si myself...ext. antenna not hd...I take my units off my boat so I have it at home... I also have a 110v power source with power cord. I just powered the unit up without the ant... no tab and no nav. screens. plug in spare ant and the tab and screens appear... unplug ant. and the tab and screens remain.

I got out on the lake one time and I didn't have any nav screens ....called HB my ant went out .....they replaced (under warranty)