Jim KM5PO described his progress with 122GHz stuff using a VK3CV transceiver. The presentation is from NTMS Meeting on December 4, 2021.
Here you can download the presentation (ppt) http://ntms.org/files/Dec2021/NTMS_122_GHz_KM5PO_build.ppt (please copy in your browser)
Enjoy!
Picture: from presentation