FTA-750/FTA-550 O perATing MAnuAl1Important notIce!FCC RF Exposure Compliance Requirements for Occupational Use Only:The FTA-750/FTA-550 have been tested and complies with the Federal Communications Commission (FCC) RF ex-posure limits for Occupational Use/Controlled Exposure Environment. In addition, it complies with the following Stan-dards and Guidelines: FCC 96-326, Guidelines for Evaluating the Environmental Effects of Radio-Frequency Radiation. FCC OET Bulletin 65 Edition 97-01 (1997) Supplement C, Evaluating Compliance with FCC Guidelines for Hu-man Exposure to Radio Frequency Electromagnetic Fields. ANSI/IEEE C95.1-1992, IEEE Standard for Safety Levels with Respect to Human Exposure to Radio FrequencyElectromagnetic Fields, 3 kHz to 300 GHz. ANSI/IEEE C95.3-1992, IEEE Recommended Practice for the Measurement of Potentially Hazardous Electromag-netic Fields - RF and Microwave. This radio is NOT approved for use by the general population in an uncontrolled environment. This radio isrestricted to occupational use, work related operations only where the radio operator must have the knowl-edge to control its RF exposure conditions. When transmitting, hold the radio in a vertical position with its microphone 1 to 2 inches (2.5 to 5 cm) awayfrom your mouth and keep the antenna at least 1 inch (2.5 cm) away from your head and body. The radio must be used with a maximum operating duty cycle not exceeding 50%, in typical Push-to-Talkconfigurations. DO NOT transmit for more than 50% of total radio use time (50% duty cycle). Transmittingmore than 50% of the time can cause FCC RF exposure compliance requirements to be exceeded.The radio is transmitting when the “TX” icon is displayed on the upper left corner of the screen of the radio.You can cause the radio to transmit by pressing the PTT button. Always use YAESU authorized accessories.NOTICEThere are no user-serviceable points inside this transceiver.All service jobs must be referred to your Authorized Service Center.