With the use of 2 sound cards and WinPSK, KGKSDR decoding BPSK31 on 40m

Softrock TX/RX with KGKSDR looking at the SSB end of 40m in the 3rdNov 2007 contest.
During the video does someone put up a tune signal then swing his VFO to and fro across the band?

Softrock TX/RX v6.1 with KGKSDR slowly tunes across the 40m contest stations on 3rd Nov2007 using a LSB filter.

One station sits tight within the filter passband,another LF of him spreads wide.