I am looking for a small device to sit on a rotating antenna mast that can send the direction it's pointing in, in degrees relative to north (True or magnetic). The mast is circa 60 feet tall, an RF link would be ideal, wired much less so. Cost IS an issue. Does any such device exist or could be fairly easily built or modified? I would also need some sort of display about 40 feet at ground level, from the mast. Thanks. Maybe a transducer for model aircraft?