Meaning of RADIO in English
BAD : I always listen to the news in the radio.
GOOD : I always listen to the news on the radio.
BAD : On radio there was a current affairs programme.
GOOD : On the radio there was a current affairs programme.
On the radio, on (the) television (NOT in ): 'It's strange to hear your own voice on the radio.' 'What's on television tonight?'
Longman Common Errors English vocabulary. Английский словарь распространенных ошибок Longman. 2012