Which of the following formats of a self-assigned indicator is acceptable when identifying using a phone transmission?

When identifying using a phone transmission, all formats listed are acceptable for self-assigning indicators. In amateur radio, operators often include a method of showing their location or license status when communicating. The terminology used, like "stroke," "slant," and "slash," is interchangeable in this context and serves to indicate the station's call sign followed by an additional qualifier.

For example, "stroke W3," "slant W3," and "slash W3" all convey the same idea: they indicate that the operator is using a different location or call sign than their primary one. The use of these terms maintains consistency in communication and provides clarity to the listener. By allowing all these formats, regulations in amateur radio recognize the diverse ways operators may want to express their self-assigned indicators, which can depend on personal or regional preferences while still adhering to the standards of radio identification.