You're receiving us with an indoor loop without a preamp?? :-)

Yes, but when I adjust the CV on the correct frequency the noise increase...
I think the sensibility is good ?
(there is a coupling loop 1 turn in the center to connect the FT817)

Yes, the FFT bin width is 42 mHz. Just increase the input divisor to 32, so you're coming out at 21 mHz. This will help a bit.

BTW now i'm TXing again to VK so there is a test signal ;-)

Ok Stefan I received your signal.

Now I think SL has correct settings.
I just finished to repair my variable capacitor.

I start the grabber 137 kHz for stn who want to see their sigs

http://f6hcc.free.fr/grabber.htm

73, John / F6HCC