Reuters notes Motorola Solutions has forecast a weaker first quarter than Wall Street expected because of higher-than-anticipated expenses, sending its shares lower yesterday. In its first quarterly report as an independent company, the supplier of walkie-talkies and other wireless devices to companies and government agencies forecast sales growth of 3 percent to 4 percent in the first quarter of 2011. It said earnings from continuing operations would be US$0.29 a share to US$0.34 a share. Meanwhile the company posted a 13 percent increase in fourth-quarter quarterly revenue as demand for its wireless equipment rose. Motorola Solutions’ revenue rose to US$2.246 billion from US$1.983 billion a year earlier, had it been a separate company then. Government sales rose 9 percent to US$1.5 billion and enterprise sales were up 23 percent to US$772 million.