I want to know the answer to the following question:
When did test transmissions of HDTV begin in Europe?
All the background I'm provided with is that "Test transmissions had been active since the IBC exhibition in September 2003, but the New Year's Day broadcast marked the official launch of the HD1 channel, and the official start of direct-to-home HDTV in Europe.". Is that enough to answer the question?
Answer: yes