National Broadcasting Co. said it had decided...

National Broadcasting Co. said it had decided against buying the cable channel Tempo Television but plans to lease time on the channel instead. NBC announced last month that it had signed a letter of intent to buy Tempo Television to carry its new business news and sports programming. Tempo Television, a unit of Tempo Enterprises of Tulsa, Okla., provides outdoors, travel and informational programming to about 12 million subscribers. Under a new plan, the companies said NBC would lease time on the channel for a business news service to run from 6 a.m. to 8 p.m. weekdays, starting in early 1989.