Much longer than normal VHF communications...

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Question 1 of 20dZHUtU5c27OFmFfwpqZG

Much longer than normal VHF communications distances are typically caused by:

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Question 1 of 20

dZHUtU5c27OFmFfwpqZG

Much longer than normal VHF communications distances are typically caused by:

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🔍 Key Concepts

• Line-of-sight propagation for VHF frequencies • Difference between ionospheric (skywave) propagation and tropospheric/atmospheric effects • Effect of transmitter power vs. propagation conditions on range

💭 Think About

• Think about whether VHF radio waves normally bounce off the ionosphere like HF (high frequency) signals, or if they mainly travel in straight, line-of-sight paths. • Consider which part of the atmosphere (ionosphere vs. lower atmosphere/troposphere) is most associated with bending or trapping VHF signals to extend range. • Ask yourself: does increasing power change the maximum possible range the same way as a change in propagation conditions might?

✅ Before You Answer

• Confirm that VHF (Very High Frequency) is generally considered a line-of-sight service under normal conditions. • Verify which atmospheric layer(s) are responsible for HF skywave vs. which affect VHF bending/ducting. • Check whether power level alone can overcome the Earth’s curvature and normal radio horizon limits.

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Question 1 of 20dZHUtU5c27OFmFfwpqZG

Much longer than normal VHF communications distances are typically caused by:

Back

Question 1 of 20

dZHUtU5c27OFmFfwpqZG

Much longer than normal VHF communications distances are typically caused by:

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed