This site might be of interest to you:
http://www.airnavsystems.com/
Im not sure with the regulations in bahrain, this part of the world is a bit strange when it comes down to things like that. A buddy of mine has passed thru obbi once with a handheld reciever and when the customs agent asked him whats it for he just said it was part of his flight gear and he was able to pass thru ok. but im not sure how they will react towards bigger equipment.
Im trying to setup a live atc feed for omdb and omsj will let you know how that goes here.
another link since its of ur interest:
http://www.liveatc.net/
goodluck :-)