AT&T engineered an unusual low-power antenna system inside a radio quiet zone at a snow resort in rural West Virginia, giving thousands of daily smartphone users network access for the first time.

Work on the multimillion-dollar solution started in 2013 and took months of testing with engineers at the National Radio Astronomy Observatory (NRAO) and staff at Snowshoe Mountain Ski Resort.

The custom-designed Distributed Antenna System (DAS) network went operational in 2015 and worked well for skiers over the past winter, according to Steven Little, senior radio access network engineer at AT&T.

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