Question

What do you mean by Am radio?

Answer 1

1. Definition: AM is short form for amplitude modulation, which refers to the means of encoding the audio signal on the carrier frequency. In many countries, AM radio stations are known as "medium wave" stations.
2. $550$ to $1720\mathrm{kHz}$ will be the frequency band of AM radio. The full range of spectrum will be up to $20\mathrm{kHz}$, but the upper modulating frequency is limited to $5\mathrm{kHz}$. This will result in a maximum bandwidth of $10$.
3. FCC can assign station frequencies that are $10\mathrm{kHz}$ apart without fear of overlap.
4. Filling up of the AM band, assigning stations every $10\mathrm{kHz}$, there will be $107$ available transmitter frequencies.

Therefore, they are also sometimes referred to as "standard broadcast stations" because AM was the first form used to transmit broadcast radio signals to the public.