The ZFM-12 from Mini Circuits is a RF Mixer with RF Frequency 0 to 1250 MHz, LO Frequency 0 to 800 MHz, IF Frequency 50 to 90 MHz, Conversion Loss 5.67 to 7.5 dB, LO/RF Isolation 35 dB. Tags: Module with Connectors. More details for ZFM-12 can be seen below.