Hi
I made a horn from the website:
https://3g-aerial.biz/en/online-calculations/antenna-calculations/horn-antenna-online-calculator
The biggest one my CNC machine could make.
I connected the made horn to the Transverter 3cm.
and reprogrammed the firmware from 10368MHz to 10489.5MHz
and what I heard:
Horn and TRV 3cm, and QO-100.
www.youtube.com