Here is a low noise block downconverter (LNB). It sits at the focus of a satellite dish and receives the signal reflected by the dish.
This one has two high-frequency inputs (C band/K band?). They probably correspond to the two polarizations, selected by cutting the power to one of the amplifiers. The mixer is a bit exotic: the LO is a dielectric resonator coupled to a microstrip, i.e. a dielectric resonator oscillator (DRO).
The resonator is probably a high-permittivity ceramic, such as barium titanate.
In summary
Two inputs: probably the two polarizations (H/V or left/right circular), selected by powering one amplifier or the other.
DRO local oscillator: good frequency stability and low phase noise.