The X1M-11-411 from Pulsar Microwave is a RF Mixer with LO Frequency 5 MHz to 4.2 GHz, IF Frequency 5 MHz to 2 GHz, Conversion Loss 10 dB, LO Drive - Power 17 dBm, P1dB 10 dBm. Tags: Module with Connectors, Triple Balanced Mixer. More details for X1M-11-411 can be seen below.