Numerous other cases of multiple numeral prefixes exist. Merchant and naval vessels are assigned call signs by their national licensing authorities. First name Middle name Last name. FCC issues calls as short as 1 x 1 with "K1D" being a popular choice for individual events. An example occurred in when the "" was used in place of district numbers for the many stations that celebrated the bicentennial of the U.
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An individual operator is assigned a unique call sign beginning with this prefix and then completed with a separating numeral and suffix. In order to save time, two-letter identifiers were adopted for this purpose. The New Zealand operator substitutes their identifying separating numeral with another, so long as a second digit is added to the beginning of their normal suffix. Archived from the original on The call sign might be abbreviated to the final two or three numbers during operations, for example: