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Chadless tape

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In telecommunication, the term chadless tape has the following meanings:

1. Punched tape that has been punched in such a way that chad is not formed.

2. A punched tape in which only partial perforation is performed so that the chad remains attached to the tape.

Note: The partial perforation is deliberate, and should not be confused with imperfect chadding.

Chadless tape was used in mobile teletype installations, such as military field communications, to help maintain a clean workplace.

Source: from Federal Standard 1037C and from MIL-STD-188

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