The international distress frequency 2182 kHz belongs to which radio band?

The international distress frequency 2182 kHz belongs to which radio band?

• A. VHF
• B. UHF
• C. HF
• D. SHF

Answer: (C)

2182 kHz equals 2.182 MHz, which sits in the high-frequency region used for long-range maritime communications. HF signals can travel long distances by reflecting off the ionosphere, making them ideal for distress calls when ships are far apart or out of range of VHF radios. The other bands listed operate at higher frequencies and rely on line-of-sight or microwave propagation, so they don’t cover this frequency. That’s why this international distress frequency is classified in the HF band.

2182 kHz equals 2.182 MHz, which sits in the high-frequency region used for long-range maritime communications. HF signals can travel long distances by reflecting off the ionosphere, making them ideal for distress calls when ships are far apart or out of range of VHF radios. The other bands listed operate at higher frequencies and rely on line-of-sight or microwave propagation, so they don’t cover this frequency. That’s why this international distress frequency is classified in the HF band.