LPWAN instigator Sigfox has announced that it will expand its US rollout tenfold, covering one hundred cities in the country. Partnering with tower, rooftop, and billboard site owners, the company says it has access to 230,000 potential sites for its base stations – but is keeping quiet about how many base stations it will actually be installing. Allen Proithis, Sigfox’s North America President, told us that the expansion will still be kept in-house, much like how Sigfox runs its French network. In other markets, the company uses network partners and revenue share agreements to build out without having to construct the networks itself, but Proithis confirmed that Sigfox isn’t planning on rolling its US operations into an Sigfox Network Operator…