well there are 2 ways to go, either cheap or expensive... It looks like airtronics makes a 27mhz Am 3 channel computer radio that has 12 model memory. Otherwise you have the more expensive solution which would be to go with a 3 channel FM computer radio and purchase 2 extra recievers... I personally would do this and get a synthesized system while your at it.... Airtronics and Jr both make nice systems. I personally prefer JR radio and you can get the JR XS3 for $180 at Stormer hobbies, with the recievers costing $75 each... $350 might seem kinda steep, but concidering you get the security of an FM radio and can control up to 6 models (10 models if you decide to get the $220 XS3 pro)...... and you never have to worry about radio crystals or those stupid knobs getting bumped changing your settings while in transit ever agian!!!