Just installed the WSPR application on My SONY VAIO Notebook under OS Windows XP SP3.
Working stable. Amazing that my QRP 5 Watts and simple Vertical Antenna is enough for contact with Australia and USA on 40m (!).
This Application is useful for HF and VHF conditions analise.
Some screenshots below:
23 March 2011 (QRV: 7 MHz)
24 March 2011 (QRV: 21 MHz)