Home : Propagation : MUF Indicators
- Current Optimal Frequency Charts
- Optimal Working Frequencies (MHz) for High Frequency (HF) / Shortwave Radio. By region, updated monthy.
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- Near-Realtime MUF indicator
- This is a highly informative map that can be used by amateur and professional radio communicators to determine maximum usable frequencies for any world-wide path at the indicated UTC (Zulu) time.
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