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February 24, 2025

Study Guide and Reference Material for Commercial Radio Operator Examinations (United States. Federal Communications Commission)

Study Guide and Reference Material for Commercial Radio Operator Examinations (Washington: GPO, 1955), by United States Federal Communications Commission (PDF at americanradiohistory.com)

from New Online Books https://www.americanradiohistory.com/Archive-Bookshelf/Regulatory/FCC-Operator-Study-Guide-1955.pdf

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