You can mount it pretty much any where you want if you use another antenna. I used my GDL 39 early on as a means to get traffic and weather to my portables so it sat on top of the glare shield for a couple of years. Then when I redid my panel I needed a ADSB-In source to that was not only hard wired but the signal had to be dependable. So, I took stubby antenna off, bought the appropriate MHZ antenna from Delta Pop, mounted the shark fin antenna on the belly and mounted the GDL39 behind the panel. I can reach it if I really want to get the bluetooth connection to an iPad but that will be rare. Basically, I turned a portable in to a permanent mount.