MUMBAI: Q1 2018 ended 30 June 2017 has been a bit of a mixed bag for the Sunil Mittal headed Bharati Airtel’s DTH biz – Airtel Digital TV. Its subscriber base expanded by nine per cent to 13.3 million as compared to 12.14 million in Q1 FY 2017 ended 30 June 2016. Net customer additions were hence around 499,000.