KOLKATA, 18 JULY: The state government has requested All India Radio (AIR) to undertake a survey to examine the transmission capacity of Kolkata-A-Channel, after reports that fishermen in the Bay of Bengal on the Indian side are receiving signals from a Bangladesh radio instead of the AIR. Such a survey is required because it was pointed out by fishermen that they are not getting weather warning from AIR while fishing in the sea. The state disaster management secretary, Mr Indiver Pandey, is learnt to have sent a letter to Mr Arvind Kumar, joint secretary (Broadcasting), at Shastri Bhavan in New Delhi requesting him to direct AIR, Kolkata, to undertake a survey to study the transmission capacity of Kolkata-A-Channel. A senior official at Writers