Clearwire promotes Erik Prusch to president-CEO; interim CEO

Clearwire promotes Erik Prusch to president-CEO; interim CEO John Stanton becomes executive chairman … Daniel Margolis, ex-Garvey Schubert, hired by FCC as attorney-adviser in Office of Communications Business Opportunities … Lobbyist registrations: Spectrum Bridge, Wiltshire & Grannis, effective July 1 … Chuck Davis, ex-Fandango, joins Boingo Wireless board … New members of Unified Communications Interoperability Forum board: Yair Wiener, Radvision, and Ashish Gupta, Vidyo … Scripps Networks moves Andy Singer, ex-DIY Network, to Travel Channel head of programming and production … Westwood One promotes Max Krasny to senior vice president/general manager-entertainment division and affiliate sales.