RTHK will today unveil a revamp of its Putonghua channel to appease listeners who have flooded the station with complaints. More than 80 fans of the 'golden oldies' and news on Radio Seven, which was ditched in March to make way for the Mandarin-language programmes, have lodged protests with the Television and Entertainment Licensing Authority. Just two months after the new channel was launched, executives at the government-funded station will bring back the old tunes, expand current affairs, introduce talk-back radio and financial news. However, they will be in Putonghua rather than Cantonese which was used previously on Radio Seven. An authority spokesman said it had received 86 complaints about axing of the nostalgic songs and Cantonese programmes to make way for the channel, designed to help residents improve their Putonghua and provide shows for mainland immigrants. Demands for the channel to be reinstated were received from 35 listeners. RTHK is said to have received hundreds of complaints. Sources at the station criticised the lack of planning which led to the Putonghua service changes so soon after it was introduced.