I HomophonesHomophones are words that sound the same but have different meanings, such as "night" and "knight". Homophone clues always have an indicator word or phrase that has to do with phonetics, such as "reportedly", "they say", "utterly" (here treated as "utter(ing)-ly" and not with its usual meaning), "vocal", "to the audience", "by the sound of it", "is heard" and "on the radio". "Broadcast" is a particularly devious indicator as it could indicate either a homophone or an anagram.
An example of a homophone clue is
We hear twins shave (4)
which is a clue for PARE, which means "shave" and is a homophone of pair, or "twins". The homophone is indicated by "we hear".
If the two words are the same length, the clue should be phrased in such a way that only one of them can be the answer. This is usually done by having the homophone indicator adjacent to the word that is not the definition; therefore, in the previous example, "we hear" was adjacent to "twins" and the answer was pare rather than pair. The indicator could come between the words if they were of different lengths and the enumeration was given, such as in the case of "right" and "rite".