Re: Radio Broadcast link from a/c
If an ordinary mobile phone won't work (or can't be used legally), I'd suggest using an Iridium phone - very nearly SOP on the majority of biz jets in the US at least. Even without the external antenna my guess is that it should give you clear transmissions through the cabin windows. I'd be much more worried about the ambient noise, turboprops are not known for quiet cabins so you may not get exactly broadcast quality sound.