The D-9800-2-1K from Narda-MITEQ is a Block Downconverter with Input RF Frequency 1.5 to 1.8 GHz, Output RF Frequency 70 MHz, LO Stability ± 0.25 to 0.5 dB(Level stability), P1dB 20 dBm, Gain 43 to 50 dB. More details for D-9800-2-1K can be seen below.