Hi Simon, the link: http://windsond.com/ I made a decimator file of my recording, centered at 402.800 MHz, from which I attacht a screenshot playing back with console V2 with 96 kHz bandwidth. That fits, but I have seen sondes with over 100 kHz also.
I can share a link to 15 minutes of IQ recording, from my local cloud. http://gofile.me/35mDS/AE3aSEC8e which is at a reasonable fiber speed . 540 MB
No decoder available yet ;-) GFSK is all that I know till now.