2024 47 CFR 97.221 – Automatically controlled digital station

2023 47 CFR 97.221 – Automatically controlled digital station

2022 47 CFR 97.221 – Automatically controlled digital station

2021 47 CFR 97.221 – Automatically controlled digital station

2020 47 CFR 97.221 – Automatically controlled digital station

2019 47 CFR 97.221 – Automatically controlled digital station

2016 47 CFR 97.221 – Automatically controlled digital station

2015 47 CFR 97.221 – Automatically controlled digital station

2014 47 CFR 97.221 – Automatically controlled digital station

2010 47 CFR 97.221 – Automatically controlled digital station

2009 47 CFR 97.221 – Automatically controlled digital station