The PH-21-411 from Pulsar Microwave is a RF Mixer with LO Frequency 870 to 970 MHz, IF Frequency 70 MHz, Conversion Loss 7 dB, LO Drive - Power 23 dBm, IP3 33 to 35 dBm. Tags: Module with Connectors, Triple Balanced Mixer. More details for PH-21-411 can be seen below.