Which pairing correctly associates VHF and HF/MF DSC frequencies with the DSC modes (Data)?

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Multiple Choice

Which pairing correctly associates VHF and HF/MF DSC frequencies with the DSC modes (Data)?

Explanation:
DSC uses specific frequencies for data transmissions on different bands: on VHF the data calls are sent on 156.525 MHz (the DSC channel often referred to as Channel 70), while on HF/MF the standard DSC data frequency is 2,187.5 kHz. That means the correct pairing is VHF 156.525 MHz for Data and HF/MF 2,187.5 kHz for Data. The other options mix in frequencies used for voice distress or other non-DSC purposes, such as 2,182 kHz (a voice distress channel) or 156.8 MHz (not the designated VHF DSC frequency).

DSC uses specific frequencies for data transmissions on different bands: on VHF the data calls are sent on 156.525 MHz (the DSC channel often referred to as Channel 70), while on HF/MF the standard DSC data frequency is 2,187.5 kHz. That means the correct pairing is VHF 156.525 MHz for Data and HF/MF 2,187.5 kHz for Data. The other options mix in frequencies used for voice distress or other non-DSC purposes, such as 2,182 kHz (a voice distress channel) or 156.8 MHz (not the designated VHF DSC frequency).

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