Motorola hopes Silver Lake will help accelerate its transition from selling only radios that police officers, fire departments and other emergency workers use, to a broader emergency communications platform, the newspaper reported. The investment, a so-called private investment in public equity, or PIPE, is in the form of debt that can be converted into common stock. Two top Silver Lake executives, Egon Durban and Greg Mondre, will join Motorola’s board as part of the deal Motorola plans to announce on Wednesday, the newspaper said.