1. In India it is NOT permitted to scan through any radio frequencies without due license. All bands which are available on a commercial radio (including 88-108Mhz) are open for general public (to listen to).
2. In India it is illegal to have devices like scanners. That is why you find shops NOT selling such devices at all.
3. Amatuer Radio Operators need to get a license, and along with the grade they are also allotted clearly defined frequency range in which they can Tx and Rx. The Act says that HAMS should also NOT record/or note down any communication which they chance to overhear

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4. Air Band (for Aviation Controls) is between 127.00Mhz and 136.00Mhz. Scanners for this frequency is available, but it is ILLEGAL in India. Remember two foreigners getting caught in New Delhi carrying such scanning devices?
5. Police frequencies are alloted by WPC and the Wireless Establishment of the Police forces (
http://www.dcpw.nic.in/). These frequencies are generally not let known to public. There have been cases in which some people did listen to restricted channels, but that was after tampering with equipments (a case reported was fishermen in Kozhikode, Kerala received and transmitting on the district police channel).