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</html><description>David detailed the progress of electronic communications by wireless brought about by Marconi, the GPO and the Military including the many types of sets used during the First World War till it&#x2019;s end.</description><thumbnail_url>https://sadars.co.uk/wp/wp-content/uploads/2015/10/trench-radios.jpg</thumbnail_url><thumbnail_width>488</thumbnail_width><thumbnail_height>252</thumbnail_height></oembed>

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