was going to try a vhf antenna splitter
I've never liked doing that.
I've seen factory installed units with that ribbon cable antenna also. The ones I've seen there was not any complaints where I live.
But I personally install the 12in "Rubber Ducky" antenna's on boat that that I work on.
I have installed them laying down on top of E-Box's, but still under the canvas of the T-top. No one even knows it's there.
On my Flounder boat [a custom SeaArk 1860] it is installed on the side of the console.
Note that when I have installed these....Sometimes the thickness of the panel is larger than the screw that comes with it will allow. I solve this by getting a longer screw, but note that it is a metric thread.
These antennas could be mounted on the side of the pilothouse or on top of it.
But be careful about mounting on the side where someone will try and use it as a hand hold.
I buy them thru BOE, but can't find it on their website. Just call Jim and ask for a 12in "Rubber Ducky" AM/FM antenna.
http://www.amazon.com/AM-FM-Antenna-72- ... _pr_sims_t