Standard AM radio band: Standard Amplitude Modulation (AM) radio broadcasts are confined to which part of the electromagnetic spectrum?

Introduction / Context:
AM broadcasting is allocated to a specific frequency band by international spectrum regulations. This ensures compatibility of receivers and transmitters worldwide.

Given Data / Assumptions:

• Standard AM band covers 540 kHz to 1650 kHz.
• This falls within the Medium Frequency (MF) range of the electromagnetic spectrum (300 kHz–3 MHz).

Concept / Approach:

By definition, MF includes the broadcast AM band. Other ranges—HF, VHF, UHF—are used for shortwave, FM, and television respectively.

Step-by-Step Solution:

Verification / Alternative check:

Regulatory documents (ITU) confirm AM broadcasting is in MF.

Why Other Options Are Wrong:

• HF: 3–30 MHz, shortwave broadcasting.
• VHF: 30–300 MHz, FM radio/TV.
• UHF: 300 MHz–3 GHz, TV, mobile.
• LF: below 300 kHz.

Common Pitfalls:

• Confusing AM broadcast band with Shortwave AM (HF).

Final Answer:

Medium Frequency (MF)