Learn English – on the radio vs over the radio

prepositions

  1. I heard his voice on the radio.
  2. I heard him on the radio.
  3. I heard his voice over the radio.
  4. I heard him over the radio.

As a non-native speaker, I've seen the number 2 a lot.
What about the others?
Can anyone tell me which one is right, which one is wrong?
I really appreciated it if any native speakers of English could clarify the differences.

Best Answer

Currently, "on the radio" is commonly used when talking about radio programs:

My son's teacher was interviewed on the radio this morning.

"Over the radio" is commonly used when talking about two-way communication, or when emphasizing the medium:

The watch towers can communicate with each other over short-wave radio.

However, until around 1940 the two seem to have been used interchangeably

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so you might commonly see "over the radio" in older media.

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