CBS, whose network is home to naval intelligence drama “NCIS” and comedy “The Big Bang Theory”, said revenue from affiliates and subscription fees rose 10.8 percent in the three months ended March 31. The company has been focusing more on non-advertising revenue, such as subscription and retransmission fees, to help offset fluctuations in advertising revenue, which can vary from quarter to quarter depending on events. Advertising revenue accounted for about 51 percent of total revenue in the quarter.