* 100 m -- wavelength of the highest [medium wave]? radio frequency, [3 MHz]? |
* 187 m -- shortest wavelength of the broadcast radio AM band, [1600 kHz]? * 555 m -- longest wavelength of the broadcast radio AM band, [540 kHz]? |
* 1 km -- wavelength of the lowest [medium wave]? radio frequency, [300 kHz]? |
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