The M1B-0618 from Marki Microwave is a RF Mixer with RF Frequency 6000 to 18000 MHz, LO Frequency 6000 to 18000 MHz, IF Frequency DC to 4 GHz, Conversion Loss 5.5 dB, LO/RF Isolation 33 dB. Tags: Surface Mount, Double Balanced Mixer. More details for M1B-0618 can be seen below.