At mid-day in the summer, what would be the...

Question 1 of 270702s5A2Ski5GjkQJig8SuV

At mid-day in the summer, what would be the best choice in attempting to communicate, using J3E voice with a shore station some 1800 miles distant?

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Question 1 of 27070

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At mid-day in the summer, what would be the best choice in attempting to communicate, using J3E voice with a shore station some 1800 miles distant?

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🔍 Key Concepts

• HF (High Frequency) skywave propagation and how it changes from day to night • Effect of time of day and season (mid-day in summer) on ionospheric layers (especially the F-layer) • Typical range capabilities of VHF, MF, and different HF bands

💭 Think About

• Think about which radio bands are mainly line-of-sight and which can use the ionosphere to reflect signals over 1800 miles. • Ask yourself: at mid-day in summer, does the ionosphere support better propagation on lower or higher HF frequencies? • Compare the normal operating ranges (in miles) for VHF-FM, MF, lower HF, and higher HF when contacting a shore station.

✅ Before You Answer

• Verify typical maximum range of VHF-FM versus HF and MF for mobile/ship stations. • Check which HF sub-bands are generally preferred for long-distance daytime communication versus nighttime communication. • Confirm that the chosen option can realistically support 1800-mile communication under mid-day summer ionospheric conditions.