The ALC0025 from Actox is a Low Noise Block with Input RF Frequency 20.2 to 21.2 GHz, Output RF Frequency 950 MHz to 1.950 GHz, LO Frequency 19.25 GHz, LO Stability 25 KHz, Gain 50 to 62 dB(Conversion Gain). More details for ALC0025 can be seen below.