I've got this 3GHz RF amplifier off ebay, and I'm trying to figure out how it works. I've took the RF shield off, but the markings on the component that I assume is the transistor, are scratched off.
What transistor could have been used here?
Also, how can this thing work with just one transistor?
Here is a photo of my device:
The underside of the PCB is just a ground pour