AM radio stations in the US are from 530Khz to 1700Khz, so possible. If so, then calling them “extremely low frequency” is a bit of a misnomer, as that band is called “medium frequency” or MF for short. The actual ELF band is 3-30hz, 4+ orders of magnitude lower frequency, and is mostly only used for submarine communication as most higher frequency signals are filtered by water.