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== FCC Regulation: Station identification ==== Explained ==This section explains how often and when you must give your call sign. Many hams are confused by some of the wording in this regulation. For instance, some operators believe they must say their call sign at the end of every transmission. Another misinterpretation is the operator that feels he must say his call sign every ten minutes even though he has not spoken during that time, such as when monitoring a frequency or listening to a net on a repeater. Q: Do I have to say my call sign at the end of each transmission?A: No. The regulation states "''must transmit its assigned call sign on its transmitting channel at the end of each communication.''" The opportune word being "communication" and not "transmission." A communication is not limited to a specific transmission but rather a group of transmissions involving the same conversation or communication. So, when you are in a conversation with another operator or group, often referred to as a QSO, you must identify your station every 10 minutes within the next opportunity which is typically next time it is your turn. You do not have to interrupt other stations to blurt out your call sign because the clock is running out. You do not have to say your call sign with each transmission. Next time it is your turn, and you know it has been a duration of ten minutes, start by saying your call sign. If it has been a duration less, such as a couple minutes after your last transmission, you do not have to state your call sign. During a net on a repeater in which you are participating you are not required to interrupt by stating your callsign every ten minutes. When it is your turn, state your call sign. Do not randomly blurt out your call sign if you've nothing else to say, or interrupt every ten minutes like clockwork when you have no other information to convey.