In 1950, a teletype service connected MMMO to Clark Air Force Base, US Naval Station Sangley Point and the Bureau of Telecommunications (precursor to the current National Telecommunications Commission. Moreover, Exchange of weather reports with foreign countries, aircraft-in-flight and four aeronautical stations in the country – Laoag, Legazpi, Cebu & Zamboanga began at this year. Private radio systems and the then National Civil Defense Administration also helped to facilitate the reception of data and dissemination of the forecasts and warnings. In 1954, radio transmissions of time signals (which were done seven times daily) began in the geophysical observatory (which was now called Astronomical Observatory at this time).