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FOOTBALL_HELMET_TRANSMITTER

2016-04-06 17:48  
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FOOTBALL_HELMET_TRANSMITTER
Impact data sensed by accelerometer in helmet is, transmitted to sideline receiver by f-m/f trans-miller. Use of subcarrier oscillator makes transmitter more immune to shock and vibration than with conventional main-channel oscillator.-J. S. Aagaard and J. L. DuBois, Telemetering impact Data from the Football Field, Electronics, 35:14, p 46-47.