What is a requirement for the issuance of a club station license grant?

The requirement for the issuance of a club station license grant is that the club must have at least four members. This is important because having a minimum number of members ensures that there is sufficient involvement and governance within the club to support its operations. This requirement helps maintain the integrity and functionality of amateur radio clubs, ensuring they can effectively manage their activities and responsibilities associated with operating a club station.

Regarding the other possible answers, while a trustee with an Amateur Extra Class operator license may provide a higher level of expertise within the club, it is not a mandatory requirement for the issuance of a club station license. Additionally, registration with organizations like the American Radio Relay League (ARRL) can provide benefits and support for ham radio clubs but is not a criterion for obtaining the license. Therefore, the emphasis on having a minimum membership makes option B the primary requirement.