The 310-027123-001 from Spectrum Control is a Down Converter with RF Frequency 500 to 2000 MHz, LO Frequency 0 to 6300 MHz, Conversion Gain 5.5 dB, P1dB -4 dBm, Spurious -45 dBc. Tags: Surface Mount. More details for 310-027123-001 can be seen below.