Yes I've done that before/ it works pretty good for 10MHz and up. The 02 skymaster that I flew in air shows actually had one mounted right above the pilot's position on top of the cockpit/ it was used on all the Military 02s as standard 20 MHz and up to 70Mhz no tuning needed. I can't remember the military model number/ but it could easily be install and approved. If using the long wire NDB/ADF antenna any antenna tuner would work, I have used manual tuners and auto tuners. On my Skymasters 337/p337s and use on many other highwing aircraft over the years/ it is about 20 foot or longer and works good for 5 MHz and up.