We can listen to various ATC radios across the world, but I really want to listen to the ATC at VOBL.
In principle you can listen to ATC of VOBL (Kempegowda International Airport, Bangalore) using a VHF air band radio receiver on the following frequencies:
- Tower: 124.35 MHz
- Ground: 121.65 MHz
- Approach: 121.25 and 127.75 MHz
It is however illegal to own such a receiver in India:
- Prohibition of possession of wireless telegraphy apparatus without licence.—Save as provided by section 4, no person shall possess wireless telegraphy apparatus except under and in accordance with a license issued under this Act.
(The Indian Wireless Telegraphy Act, 1933, emphasis mine)