ZAGREB (Croatia), July 20 (SeeNews) – Sweden's Tele2 said its wireless unit in Croatia turned to a positive EBITDA (earnings before interest, tax, depreciation and amortisation) of 11.0 million Swedish crowns ($1.7 million/1.2 million euro) in the first half of 2011 from a negative EBITDA of 38 million crowns a year earlier.