VK2TPM made some nice videos of the Weak Signal Propagation Reporting System (WSPR) maps over time. Its kind of fun to watch the propagation shift from trans-Atlantic to trans-Pacific.
More: http://www.youtube.com/user/vk2tpm#p/u/4/U1sBGZzNv8s
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SolderSmoke Daily News — Ham Radio Blog
Serving the worldwide community of radio-electronic homebrewers. Providing blog support to the SolderSmoke podcast: http://soldersmoke.com
It’s like watching the ebb and flow of the tides. Cycles, cycles…. Now here is an interesting “cyclical” behaviour, of a different sort:http://www.youtube.com/watch?v=vsShLMdQBjA