Yesterday I have received the C-band down-converter that I have ordered last week for the UNITEC-1 receiver station.
Watch video on YouTube.
I have also uploaded a few high resolution photos to my Picasa Albums:
If you can't read the specs, you can see them on my work-in-progress wiki page about the C-band Receiver Station.
Next step will be to connect it to the USRP equipped with the WBX and TVRX daughterboards (need 400...700 MHz receiver) and use some basic GNU Radio receiver software to test it using the OZ7IGY beacon, which transmits on 5.7 GHz (5760.930 MHz to be precise) and is definitely within our range. We can probably also find a signal generator for 5.6/5.7/5.8/5.9 GHz somewhere for better tests.