On Wednesday Dish Network Corp. expressed its opposition to two major mergers in the U.S. telecom market in a letter to the Federal Communications Commission. In the letter, Dish urged the American regulator to put a stop to the deals between Comcast Corp and Time Warner Cable Inc., valued at $45.2 billion US, and AT&T and DirecTV, valued at $48.5 billion US, not including assumed debt. The first deal would reportedly create the largest cable and Internet provider in the country, and Dish said the merger creates “serious competitive concerns for the broadband and video marketplaces.” “The ability for DISH and other non-dominant players to compete in the broadband and video markets will be impacted by how the Commission responds to the mergers before it,” the company said. Comcast took over NBC/Universal in 2013, which Bloomberg ranked as the fourth-largest entertainment company at the time of the purchase. Not only would the combined company have control over distribution of content, Dish said, but “a combined Comcast/TWC will be able to exercise its enormous size to leverage programming content in anti-competitive ways.” The satellite TV company also spoke out against the proposed merger of DirecTV and AT&T, which it said also presents competitive concerns. “Among other things, AT&T and DIRECTV will also be able to combine their market power to leverage programming content, to the potential detriment of consumers,” the company said in the letter. Dish also told the FCC it would participate in America’s upcoming AWS-3 and 600 MHz spectrum auctions.