Yes I know its been a while but I just haven't been in the mood for building radio telescopes recently. Anyway, a few months ago i order this LNA (*32 dB* Gain), which finally arrived, but I haven't tested it yet. I attached it to my horn antenna which will be used as a feed for the 1.2m dish, which I already have.
I built the feed horn by soldering an HVAC adapter to a baby food can, and drilling a hole in the side where I inserted a 90 degree coaxial F-connector and soldered it in place. The dimensions for this aren't perfect, but hopefully it'll work well enough to be able to receive the hydrogen line.
Anyway, here are some pics: