On 10/8/2014 16:17, Keenan Tims wrote:

There is a provision in the regulations somewhere that allows underground/tunnel transmitters on licensed bands without a license, provided certain power limits are honoured outside of the tunnel. Perhaps they are operating under these provisions?

Which, if unlicensed, brings us back to the question of "by what authority, other than popular rioter opinion, are they REQUIRED to provide the service?". -- The unique Characteristics of System Administrators: The fact that they are infallible; and, The fact that they learn from their mistakes. Quis custodiet ipsos custodes