| Modern maritime IT builds on these foundations from line and radiotelegraphy and the encrypting techniques associated with it. |
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| While teaching, Thompson contributed to the development of electric dynamo machines and radiotelegraphy. |
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| Transmission apparatus for radiotelephony, radiotelegraphy, radio broadcasting and television. |
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| At central level, there was an improvement in the monitoring system of immunization coverage through radiotelegraphy. |
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| Inauguration of the first branch of the imperial radiotelegraphy network, with the service between England and Canada. |
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| During the first years, the company's efforts were devoted chiefly to showing the full possibilities of radiotelegraphy. |
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| In 1914, the Tower was officially taken over as a military center for radiotelegraphy, and successfully completed its counter-espionage operations. |
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| Both radiotelephony and radiotelegraphy were in wide use, but radiotelephony had not as yet proved reliable and satisfactory for tactical military communication. |
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| Includes: radiotelephony, radiotelegraphy and radiotelex services. |
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| A familiar example of PDM is the International Morse Code, used in ship-to-shore communications, amateur radio, and certain other forms of radiotelegraphy. |
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| Reception apparatus for radiotelephony or radiotelegraphy. |
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| Greece therefore urges all Contracting Members and the IFRB to do everything possible to ensure continuation of Morse radiotelegraphy service in the planned band under satisfactory conditions. |
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