What is an appropriate way to call another station on a repeater if you know the other station's call sign?

When you want to contact a specific station on a repeater, the proper and most efficient etiquette is to say their call sign first, followed by your own. For example, you would say: 'W1AW, this is K1XYZ.' This immediately lets the other station know they are being called and satisfies the FCC requirement to identify your own station. Saying 'CQ' on a repeater is generally considered unnecessary and out of place, as repeaters are typically meant for localized chat rather than long-distance general calls. If you just want to talk to anyone, simply stating your call sign and 'listening' or 'monitoring' is the preferred method. You should never use the phrase 'break, break' to initiate a routine conversation. In amateur radio, saying 'break' multiple times is strictly reserved for interrupting ongoing conversations with emergency traffic.