When he returned from Switzerland, where he had studied Electrical Engineering, he had to do his compulsory military service which had been deferred while he was completing his education. A friend of his told him "Don't go into the Army, join the Navy; they have an amazing wireless station at Votanikos with which they can contact the Fleet anywhere in the world". As it happened there was a vacancy for an officer and Stefanos together with another young man called Nikolis faced a Selection Board of naval officers who really didn't know what qualifications they were looking for. He was successful whereas Nikolis went to the Ministry of Posts & Telegraphs where he ended up as Director-General many years later. The MARCONI COMPANY of England had built an impressive wireless station for the Greek Royal Navy at Votanikos, a suburb of Athens. There was a transmitter which operated on 600 metres and a larger one on long waves above 2,000 metres which used the callsign SXA. Stefanos told me how he was summoned by the Director of the Naval Station Admiral Mezeviris who asked him "Tell me, young man, what do you know about wireless?" "Well sir," replied Eleftheriou, "I studied Electrical Engineering in Switzerland--I really don't anything about wireless." "Neither do I," replied the Admiral candidly. "Nor do most of my officers. We must set up a school to train technicians and wireless operators. I entrust you with the task of getting all the necessary books and other materials. Write to England, the U.S.A., France and Germany and get whatever you need. When you are ready I will appoint staff to assist you." That was how Eleftheriou became the head of the first school for training wireless officers for the Greek Royal Navy. A couple of years later Eleftheriou joined the staff of the Ministry of Post & Telegraphs. A newspaper of 1930 had a photograph of him with one of his triplet sons. In his capacity of Head of the Telecommunications Section at the Ministry he worked hard to get official recognition of amateur radio. A handful of us who were active 'under cover' so to speak, frequently visited him in his office. He was a very likeable person and had a talent for anecdotes. One day he told us that he had attended a Joint Services Committee which had been set up to study the requirements for building a broadcasting station in Athens. A station had been in regular operation in the northern city of Thessaloniki (Salonica) since 1928, built by the pioneer of Broadcasting in the Balkans Christos Tsingeridis.