"The matter was discussed with all stakeholders and it was concluded that frequency band 700-900 Mhz to be used in the pilot test of Project Loon is being used by cellular operators and if the pilot is carried out it will lead to interference with cellular transmissions," Prasad said.
Under the project, Google will use big balloons, floating 20 km above the earth surface, for transmission of Internet services.
"Revised proposal form Google India with change of frequency band is yet to be received," Prasad said.