Many thanks for your replies and interest.
Yes it configures correctly on windows, and I can not get any software to make it work properly.
W 10 does not work at all, and windows 7 on laptop is the one I want to use, it worked before on there.
Not willing to upgrade the laptop to W10 as it holds all my old amateur radio programs.
The double hump on the spectrum display is there even without aerial connected.
I will look into all this tomorrow and run down all the options in the link from Alan,
when I have more time and post my results.
