ZNBC Expands Radio 4 Signal to Solwezi By Chansa Kunda The Zambia National Broadcasting Corporation (ZNBC) Radio 4 signal is now operational in Solwezi District of North-Western Province. The Radio 4 signal will be running on frequency 88.9 FM. ZNBC Head of Corporate Affairs, Yvette Chanda, says this is a strategic move and part of ZNBC's ongoing efforts to expand the reach of Radio 4 beyond the line of rail. Ms. Chanda says ZNBC recognizes the immense power of radio in disseminating information