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| FCC Amateur Call Sign Search |
| FCC Part 97 regulations |
| FCC License Applications & Forms the "Universal Licensing System". Renew your license online. |
| FCC exposure regulations RF Exposure, Evaluating Compliance |
| NTIA National Telecommunication & Information Administration Home Page |
| NTIA Manual of Regulations & Procedures for Federal Radio Frequency Management |
| NTIA Standards, Radios meeting NTIA standards |
| NTP-8 (series) and other MARS documents |