P194 CEEFAX 194 Tue 18 Sip 23:41/35 ONSHOW BBC Bristol celebrates its 50th birthday this week. You can see BBC equipment from the earliest pioneering days of the 1930s to the most modern technology recently developed at Bristol, plus an exhibition of photographs and even a number of radio programmer being produced at the Victoria Rooms, Clifton The exhibition runs from Saturday, September 15 to Friday September 21 inclusive, and is open 1200-1800.