AFTER almost as many comebacks as Frank Sinatra, ATV newsreader Michelle Han insisted last week she would be leaving the station for the last time at the end of April. When Han, 39, makes her final broadcast with ATV it will mark the end of her third spell with the station since she first appeared in 1979. Since then Han has sandwiched her stints there with others at TVB, Britain's Channel Four News, as well as being a producer for the Hong Kong bureau of the now-defunct UK breakfast time programme TV AM. Now Han, married to public relations boss Tony Turner, has decided she wants a long break from presenting, and that means severing her links with the Broadcast Drive station, although she is looking for fresh challenges. ''I just need a break to see what's outside of ATV. I have been with ATV on and off for something like 15 years now and I think that it is time to look afresh at what I can do. ''I have had a good long stint at ATV - I remember that when I first started reading the news with Chris Bale, he had hair,'' said Han in a joking reference to her sometime co-presenter on the station's World Channel. Bale said he would miss her if she goes. ''I don't accept she's going - she's gone and come back so many times. If I have any say in it she won't go,'' he said. ''If she does go, she's going to be missed, and by no one more than me.'' Han insisted her departure was amicable. ''There is no conflict with anyone. It is just that after so much time you need a new challenge. I want to take some time off, maybe three months, and think about what I would like to do next,'' she said. Since rejoining ATV in 1990 for her latest spell with the station, there has been an explosion in programmes beaming into Asia through satellite television. ''Certainly I would be interested in listening to someone if they came by with an offer, but I would still like to have a break,'' added Han, who also presents a programme for the Cathay Pacific in-flight channel Discovery.