Maximum allowable frequency deviation for...

Question 1 / 20205bsIQD2GlK4wUaWdWy

Question 1 of 20205bsIQD2GlK4wUaWdWy

Maximum allowable frequency deviation for VHF marine radios is:

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Question 1 of 20

205bsIQD2GlK4wUaWdWy

Maximum allowable frequency deviation for VHF marine radios is:

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🔍 Key Concepts

• ITU frequency tolerance standards for VHF marine band • Typical channel spacing in the marine VHF band (in kHz) • Relationship between channel spacing and maximum frequency deviation

💭 Think About

• How does allowable deviation relate to avoiding overlap with adjacent VHF channels? • If marine VHF channels are spaced a certain number of kHz apart, would a very large deviation be practical or cause interference? • Which of these numbers seems more consistent with a narrowband FM system used for safety and distress communications?

✅ Before You Answer

• Confirm typical channel spacing for marine VHF (international standard). • Compare each option to see which would most likely keep transmissions within their assigned channel without spilling into adjacent ones. • Eliminate any choices that are clearly too large relative to the channel spacing, as they would cause adjacent-channel interference.

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Question 1 of 20

Maximum allowable frequency deviation for VHF marine radios is:

+/- 5 kHz.

+/- 15 kHz.

+/- 2.5 kHz.

+/- 25 kHz.

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