2024 49 CFR 220.29 – Statement of letters and numbers in radio communications

2023 49 CFR 220.29 – Statement of letters and numbers in radio communications

2022 49 CFR 220.29 – Statement of letters and numbers in radio communications

2021 49 CFR 220.29 – Statement of letters and numbers in radio communications

2020 49 CFR 220.29 – Statement of letters and numbers in radio communications

2019 49 CFR 220.29 – Statement of letters and numbers in radio communications

2016 49 CFR 220.29 – Statement of letters and numbers in radio communications

2015 49 CFR 220.29 – Statement of letters and numbers in radio communications

2014 49 CFR 220.29 – Statement of letters and numbers in radio communications

2010 49 CFR 220.29 – Statement of letters and numbers in radio communications

2009 49 CFR 220.29 – Statement of letters and numbers in radio communications