Distortion in communication : There are possibilities of distortion in communication. Precision script writing is a very challenging task. In TV, visuals accompany the words and so there is no misunderstanding. Khurram khurram papad on TV are conveyed effectively, whereas poorly on radio.
Overselling : Instead of precise explanation,there is overselling. An announcer has to do a hardselling job, and so much is stake on his presentation. An insistant voice really irritates. TV does this job effortlessly.
Montonous : Repetitions are montonous.
Transient : Radio is a transient medium with no durability of message.
Audience research: Radio audience research data is not available in credible form.
Fleeting message: It is a passive medium. There are no vital inputs.
Support medium : Radio is not a main medium, and acts as a secondary frequency builder.
Audience attention : Audience may do multi-tasking while the radio is tuned in.