Longwave (French: Les Grandes Ondes (à l'ouest), Portuguese: As Ondas de Abril) is a 2013 Swiss-French-Portuguese comedy-drama film directed by Lionel Baier.
The film's principal cast are Valérie Donzelli, Michel Vuillermoz, Patrick Lapp, and Francisco Belard.
The film is set in 1974, based on a true story about a Swiss production team working for Radio Suisse Romande, who are assigned to produce a puff piece in Portugal but instead witness the Carnation Revolution.
[2] The US premiere of Longwave was at the Palm Springs International Film Festival on January 10, 2014.
[4] The reviewer for Variety found that the director had demonstrated "his thoroughgoing knowledge of and delight in film history, yet his striving for a 1970s screwball vibe feels too forced and artificial".