Sub-wave communication: Difference between revisions
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A '''sub-wave | A '''sub-wave communication''' is a form of communication thought to be undetectable by [[Dalek]] scanners and was developed by the Copper Foundation. The wave was used by [[Harriet Jones]]to contact [[Martha Jones]], Captain [[Jack Harkness]] and [[Sarah Jane Smith]], with [[Rose Tyler]] only watching. The signal was then used to combine the entire [[Earth]]'s phone systems to communicate with the Doctor by using the [[Cardiff rift|rift]] in time and space. He is then able to home in on Earth's location. ([[DW]]: ''[[The Stolen Earth]]'') | ||
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[[Category:Earth technology]] | [[Category:Earth technology]] |