Hi Henk
I think I've found the problem. When I installed G8JCFSDR Build 282 onto a clean W10 machine, I got the exact same results as you've seen, ie no spectrum although everything looks correct.
The problem I discovered is that DX8VB.DLL wasn't registered by the G8JCFSDR 282 installer program, quite why I have yet to investigate.
To fix this problem until I fix the 282 installer, please try the following.
0) Install build 282 using the 282 setup installer
1) Start cmd.exe As Administrator
2) cd C:\Windows\SysWOW64
3) regsvr32 DX8VB.DLL
?????? Windows should respond that the DLL has been successfully registered
4) Startup G8JCFSDR and all should work !!!
Hopefully this is it, please let me know how it goes !
73
Peter - GM8JCF