SpaceX is reportedly seeking access to at least 80,000 cellular tower sites across the U.S. as it prepares to launch Starlink Mobile as a fourth nationwide wireless carrier. "We will be building out our terrestrial networks so there's broad-based connectivity anywhere that SpaceX and Starlink are allowed to operate," Musk said during SpaceX's earnings call this week. Satellite launches plus spectrum acquisition "will pave the way for Starlink Mobile to become a major mobile carrier in the US," he said. Bloomberg reports: One of the companies they're in talks with is Crown Castle, which, along with American Tower and Vertical Bridge Holdings, are among the largest owners of cellular towers. When asked on a Wednesday earnings conference call whether Crown Castle is discussing leases with SpaceX, Amazon.com or other satellite-based telecom providers, Chief Executive Officer Chris Hillabrant said, "You can assume that we're talking to all parties." He declined to discuss specific customer details. Mobile networks rely on antennas placed on towers across the country to transmit wireless signals. Carriers such as AT&T Inc., Verizon Communications Inc. and T-Mobile US Inc. typically lease room for their equipment at the tower sites because it's more cost effective than owning and maintaining them, in part because the facilities can be shared. The value of the deals with SpaceX could reach into the billions.

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