PPL(A) - What does the term `aeronautical station` mean ?

Domanda id 2 - Comunicazioni in inglese - PPL(A) - Licenza Pilota Privato (Aerei)

Any station established to exchange radiotelephony communications

Station in the aeronautical telecommunication service located on land or on board of an aircraft to exchange radiotelephony communications

Station in the aeronautical mobile service located on land or, in certain instances, on board of a ship or on a platform at sea

An airborne station forming part of the aeronautical fixed telecommunication network (AFTN)