This small town is on the west coast of Ireland, in County Galway.

From Wikipedia: Clifden gained prominence after 1905 when Guglielmo Marconi decided to build his first high power transatlantic long wave wireless telegraphy station four miles (6 km) south of the town to minimize the distance to its sister station in Glace Bay, Nova Scotia. The first point-to-point fixed wireless service connecting Europe with North America opened for public service with the transmission of 10,000 words on 17 October 1907.

At peak times, up to 200 people were employed by the Clifden wireless station, among them Jack Phillips, who later perished as Chief Radio Operator on the Titanic.

There is another interesting fact about Clifden. Near to the Marconi site is where the first successful transatlantic crossing by aeroplane came to an end. John Alcock and Arthur Brown flew a Vickers Vimy bomber type from St John's Newfoundland for sixteen hours through very difficult conditions and eventually crash-landed here.