The MRA-42MH from Mini Circuits is a Space Qualified RF Mixer with RF Frequency 1 to 4.2 GHz, LO Frequency 1 to 4.2 GHz, IF Frequency 10 to 800 MHz, Conversion Gain 8.5 to 11.5 dB, Noise Figure 8 dB. Tags: Surface Mount, Active Mixer. More details for MRA-42MH can be seen below.