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I have vague memories from the early 1990:s of some sort of service that broadcast something related to sunspot numbers, in CW, probably shortwave. I think the world "BOULDER" was in there somewhere. Whatever it was, I could hear it in southern Sweden. What was it? Is is still there? On what frequency?

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The beacon DK0WCY transmits such information on 80 and 30m.

henryflower
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