3AA-15.1 Under what circumstances, if any, may a third-party participate in radio communications from an amateur station?
A control operator must be present and continuously monitor and supervise
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the third party participation. Also, contacts may only be made with amateurs in the US and countries with which the US has a third-party traffic agreement.
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the radio communication to ensure compliance with the rules only if contacts are made with amateurs in countries with which the US has no third-party traffic agreement.
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the radio communication to ensure compliance with the rules. In addition, the control operator must key the transmitter and make the station identification.
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the radio communication to ensure compliance with the rules. In addition, if contacts are made on frequencies below 30 MHz, the control operator must transmit the call signs of both stations involved in the contact at 10-minute intervals.