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'''Sonar''' was a detection system based on sound waves. | '''Sonar''' was a detection system based on sound waves. | ||
A sea-fort in the [[English Channel]] was converted into a sonar testing centre. ([[TV]]: ''[[The Sea Devils]]'') | |||
A signal transmitted by the [[Game Station]] masked the [[Dalek Fleet]] from sonar, [[radar]] and scanners. After he was taken to the Game Station in [[200100]], the [[Ninth Doctor]] cancelled this signal, revealing [[Dalek|who]] was manipulating mankind. ([[TV]]: ''[[Bad Wolf (TV story)|Bad Wolf]]'') | A signal transmitted by the [[Game Station]] masked the [[Dalek Fleet]] from sonar, [[radar]] and scanners. After he was taken to the Game Station in [[200100]], the [[Ninth Doctor]] cancelled this signal, revealing [[Dalek|who]] was manipulating mankind. ([[TV]]: ''[[Bad Wolf (TV story)|Bad Wolf]]'') | ||
The [[First Doctor]] used a sonar device called an echo-sounder to determine the depths of the [[marsh]] he, [[John and Gillian]]were walking through, enabling them to get to the [[Pied Piper]]'s [[castle]]. He later used it to find the Piper after he turned himself [[invisibility|invisible]]. ([[COMIC]]: ''[[Challenge of the Piper]]'') | The [[First Doctor]] used a sonar device called an echo-sounder to determine the depths of the [[marsh]] he, [[John and Gillian]] were walking through, enabling them to get to the [[Pied Piper]]'s [[castle]]. He later used it to find the Piper after he turned himself [[invisibility|invisible]]. ([[COMIC]]: ''[[Challenge of the Piper]]'') | ||
[[Category:Human technology]] | [[Category:Human technology]] | ||
