无线电业余爱好者使用手册/传输频率

时间信标

美国

* WWV and WWVH
   * broadcasts on 2.5, 5, 10, 15, and 20 MHz
   * Power of 2500W on 2.5 and 20 MHz
   * Power of 10000W on 5, 10, and 15 MHz

加拿大

* CHU
   * Brodcasts on 3.330, 7.850, and 14.670 MHz
   * Power of 3000W on 3.330 and 14.670 MHz
   * Power of 10000W on 7.850 MHZ