What is the expected range of a VHF radio...

Question 1 / 2707066636eec28f7522a1c51c28b

Question 1 of 2707066636eec28f7522a1c51c28b

What is the expected range of a VHF radio transmission from a vessel to a shore station?

Question 1 of 27070

What is the expected range of a VHF radio transmission from a vessel to a shore station?

🔍 Key Concepts

• VHF radio is line-of-sight – range is mainly limited by the curvature of the earth and antenna height • Difference between VHF (very high frequency) and long-range systems like MF/HF or satellite • Typical working range used in small-craft and license exam questions

💭 Think About

• Which choice best matches a realistic line-of-sight distance between a vessel’s antenna and a shore station antenna on a tower or high ground? • Think about what range you normally associate with VHF marine channels 16/13 versus systems used for ocean‑crossing communication. • Eliminate the answers that sound more like the ranges for HF radio or satellite rather than short-range VHF.

✅ Before You Answer

• Confirm that VHF marine radio is generally used for short-range communications, not hundreds of miles. • Consider the effect of antenna height: a shore station antenna on a tower will extend the range somewhat beyond ship‑to‑ship range. • Before choosing, ask: "Which option would be a typical, practical range in real coastal operations, not a rare extreme case?"

Question 1 of 27070

What is the expected range of a VHF radio transmission from a vessel to a shore station?

About 20 miles

50 - 100 miles

100 - 150 miles

150 - 200 miles