You may be referring to this, I posted a few weeks ago. IF, and this is a big IF, a chunk of interference has managed to get past the convolutional / Viterbi data decoder in the WSPR decoding rout
John, the "fake twins" occur regulary. Jim (or someone else) has offered an explanation some time ago, But I'm afraid I deleted that mail. 73, Rik ON7YD - OR7T _______________________________________