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Digital Evidence
Verizon RTT and Call Detail Records — Karen Read's Phone
Verizon range-to-tower and call records admitted in Trial 1, including a 5:18 a.m. entry with a 0.004-second procedure duration and 0.15-mile distance difference.
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Lt. Tully used the RTT data to construct ranging arcs placing Read's phone at specific locations. Defense attorney Jackson challenged Tully's interpretation on cross-examination, arguing the 5:18 a.m. entry demonstrated the physical impossibility of Tully's arc interpretation and questioning whether the start-time, end-time, and distance fields represented paired data points.
Verizon RTT (Range to Tower) records and call detail records for Karen Read's phone, admitted in Trial 1. The records contained ranging data fields including procedure duration and distance measurements, with one entry at 5:18 a.m. showing a 0.004-second procedure duration and 0.15-mile distance difference.