How can you see different programmes on different channels?
Each T.V. station uses a different signal with a different frequency than other TV stations. Our T.V. antenna catches all these signals and pass them into the set as electrical signals. When we tune in to a particular channel, the tuning coil starts oscillating at a particular frequency showing us a programme. When the channel is changed, the frequency of the tuning coil is also changed and thus we see a different programme from a different T.V. station.
