The reception is better now with less static and man made noise. Next days I will try to tune the antenna to 472-479 Khz.
The results are here:
1) QRS beacon from 9H9ES (478.4 Khz CW dial).
00:25 477 SM6BHZ de SV8CS Op8 1434 mi -32 dB in ZAKYNTHOS Island
21:41 477 DK8KW de SV8CS Op8 1816 km -28 dB in ZAKYNTHOS Island
Opera program by EA5HVK for download is here:
Spectrum lab program by DL4YHF is here:
73, Spiros- SV8CS