The X1L-04-411 from Pulsar Microwave is a RF Mixer with LO Frequency 500 MHz to 1.5 GHz, IF Frequency 50 to 500 MHz, Conversion Loss 7.5 dB, LO Drive - Power 10 dBm, P1dB 5 dBm. Tags: Module with Connectors, Triple Balanced Mixer. More details for X1L-04-411 can be seen below.