I use a pair of 5.8GHz ones that a friend got for an aborted camera on a plane project to beam mine out to the portable set. noisy as hell and very spotty reception. Probably would be solved with some better antennas.

For remote return I have a cheap set of 433MHz things. First lot failed with the mysky but the second lot that were sold as being mysky compatible work a treat. They do crap all over the 433MHz band when there are CFL's on in the room making my weather station not work.