With the right sound card and two softrocks, it looks like a guy can use Skimmer to watch two bands simultaneously with no switching:
Some sound cards provide two stereo inputs. My Delta-44 sound card does and can handle two softrocks simultaneously, each using one of the two inputs. Two copies of Skimmer can run simultaneously on my computer, each taking input from a different I/Q input. I have verified all of this except actually decoding on-air sigs from two softrocks simultaneously because I don't have two softrocks on-line at the moment. Jerry W4UK
