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Comment by jamesblonde | Hacker News Reader

Is this a story, seriously? I've been using 4G in the tunnels in Stockholm since 2012, 3G before that.

Yup. Works for you, but happens not to just work, without deliberate effort, in NYC.

Interesting, I wonder why. Stockholm's subway was built in 1950[0], which is a bit newer than NYC's. That may or may not explain why.

0: https://en.wikipedia.org/wiki/Stockholm_metro

The Stockholm Metro got 3G in 2005, by installing a radiating cable that acts as an antenna[1]. Should work everywhere, really.

[1]: https://en.wikipedia.org/wiki/Leaky_feeder

Nice. from that Wiki article:

  An alternative to using leaky feeder in underground railways is to use Distributed Antenna System (DAS). A DAS system was deployed in some New York City Subway stations by Transit Wireless to provide WiFi and mobile phone and data coverage for customers.

I wonder what the pros and cons are for each solution.

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