Ok so the Microair radio is fitted and sorted, the AVmap is on its armrest mount and working with satellites & airfields galore and no gliches...The only hinderence I now have to contend with is the constant hiss of interference from the Avmap to the radio..The antenna leads are separated by 3 feet of cockpit. Of course the Avmap is fairly near the radio, but then, so is everything else. Any ideas how to damp out the radio transmissions from the AVmap? It runs, at present, on internal batteries. I can't realistically get the radio and avmap much further apart...............I would love to know where I am going without the snake impersonations in my ear.....Geoffrey.