U3 USB Modulator Reference file download
GitHub SDK: https://github.com/Astrometa-Co-Ltd/Astrometa_SDK
FW(20240521): http://gofile.me/52TZm/C7S1ilVjD
Toolkit(20250205): http://gofile.me/52TZm/Fb61S3jgW
Toolkit manual: http://gofile.me/52TZm/JruJpA6gs
Free RTL-SDR Quick Start Guide Download : https://www.rtl-sdr.com/rtl-sdr-quick-start-guide/