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Electronic navigational aids; loran, radiobeacon, and radarbeacon systems and loran, radio-direction-finder, and radar ship equipment . Figure 3 PPI scope, showing echoes obtained from reflector-equipped buoys. bands by approximately 10 to
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File:Hitachi Hi-Phonic Radar Tuning 6-Transistor Radio, Model TH-666F, Made in Japan, Circa 1964 (8530820525).jpg - Wikimedia Commons
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The Tuning Forks Used in the Radar Calibration. (Top) 40.25 mph Fork.... | Download Scientific Diagram
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File:Vintage Hitachi Hi-Phonic Radar Tuning 6-Transistor Radio, Model TH-666F, Made in Japan, Circa 1964 (8530820525).jpg - Wikimedia Commons
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