The DNB2-WS-44.5 from Narda-MITEQ is a Low Noise Block with Input RF Frequency 43.5 to 45.5 GHz, Output RF Frequency 950 MHz to 1.95 GHz, LO Frequency 42.55 GHz / 43.55 GHz, Gain 38 dB, Gain Flatness ±3 dB. More details for DNB2-WS-44.5 can be seen below.