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Abstract: This paper analyses the implementation of Terrestrial Digital Technology (TDT) standards in Latin America. The analysis suggests that while some governments have chosen the standard attending to their industrial objectives, others have been influenced by the relevance of network externalities and scale economies and by the political and commercial relationship with their neighbours. The discussion about the technical characteristics of the systems was only relevant in the first years of the process, when the leading countries of the region had still not made their selection. Brazil decided to create its own version of the Japanese ISDB standard in 2006, and in the following years it has persuaded a significant part of the continent to choose it. Another block of countries has adopted the US ATSC standard. The most prominent case is that of Mexico, which has a preferential access to the US market. Only three countries have chosen the European DVB standard, the most widely used standard in the world. Colombia has tried to lead its introduction in the continent, but the results so far have been meagre. [Copyright &y& Elsevier]