International Morse Code , Phonetic alphabet , Characteristics of world UHF terrestrial television systems and UK 625-line television system specification.

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International Morse Code

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Phonetic alphabet

To avoid the possibility of the letters of a call-sign being misunderstood, it is usual to use the words given below in place of the letters. For example, G6PY would be given as G6 Papa Yankee.

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Miscellaneous international abbreviations

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Amateur abbreviations

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Characteristics of world UHF terrestrial television systems

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European terrestrial television systems

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UK 625-line television system specification

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