People appear on the television, but what's the equivalent for the radio?

Question

Seeing as you can't appear on a radio - what do you call it?

Answer 1

Speak over the air waves.

Answer 2

Announce.

Answer 3

Announce on the radio because you just have verbal voice with no images unless you are tuned in on line and the station broadcast a web cam feed via the site

regards x kitti x

Answer 4

Appear also works w/ radio.

Answer 5

You can say that the person is "live" or "on air" or the programme is "being aired".

Well its as far as i know. I hope it helped you.

Answer 6

They appear as well.

Symptoms appear , even if they are not visible.

At least ,  thats the way it appears to me.

Answer 7

Talk radio.