Rik - thanks for this - my experiences to date operating from a Central city location in Tiajin China was that WSPR outperformed even dot20 slow qrss in an awfully screen noisy environment - now this
Dear all, I did an atempt to compare Opera with WSPR, QRSS3 and DFCW10. I did it by generating audiofiles that contain a Opera2, WSPR, QRSS3 and DFCW signal of identical amplitude (but slightly diffe