🌌 CB DX & 11-Meter Band Propagation Weather

This page is dedicated to the current propagation conditions and radio weather for the 11-meter band (26–28 MHz), especially for CB DX and related activities. Here you will find important information and tools to monitor 11m band radio weather in real time.

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📈 The 11-Meter Band and Its Propagation Characteristics

The 11-meter band behaves similarly to HF but features unique propagation phenomena interesting for CB operators and DX hunters.

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Key propagation conditions:

• Sporadic E: Common in late spring and summer. Enables mostly short- to medium-range contacts (approx. 500–2000 km).

• F-layer propagation: Possible during high solar activity and sunspot cycles, supporting longer DX contacts.

• Tropospheric propagation (Tropo): Less common but can enhance short to medium range during weather inversions.

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🌞 Radio Weather Factors for Optimal Conditions

• Solar cycle: High solar activity promotes propagation on 11m. Currently in Cycle 25 with rising activity.

• Solar Flux Index (SFI): Values above 100 indicate good propagation conditions.

• Geomagnetic quiet: A low K-index (<3) is ideal since strong geomagnetic disturbances can impair propagation.

• Time of day: Daytime usually offers better conditions, especially for Sporadic E.

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🔄 Live Tools for Monitoring Radio Weather

Use the following resources to track propagation conditions in real time:

• Solar data: Current SFI, K-index, sunspots, and X-ray flux

• MUF charts: Maximum usable frequency maps for propagation

• DX clusters: Real-time reports from CB and 11m operators

• WebSDR receivers: Listen live on 11-meter frequencies worldwide

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⚠️ Note

This page provides information on radio weather and propagation only. Legal or operational guidelines are not covered here. Please check local regulations separately.

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📶 Good luck DXing and clear skies!