WSPR 2.1 for I/Q SDRs

WSPR 2.1 r2198 has been posted at:

Changes since r2194:

1. On some computers, a bug in r2194 caused errors in Tx timing. Although none of my machines exhibited this problem, I believe it has been fixed. Please let me know if not!

2. Negative values of Fiq are now permitted. You can use an LO on the high side of the desired WSPR band.

3. The "Tx dB" slider has been moved from the "IQ Mode" screen to the "Advanced" screen. (This slider is effective for normal radios, as well as SDRs.)

-- 73, Joe, K1JT