Please note that it is an offence to use the amateur frequencies if you do not hold a valid amateur radio licence. In the UK, amateurs are not permitted to operate from any air vehicle whilst it is in flight.
Incidentally, it's not just FM used in the amateur bands - we can also use AM, SSB, CW (Morse), TV, teleprinter, etc, etc.......and equipment is available that can operate on all of them; it is not, however, CAA type-approved.
