The PL-20-A from Pulsar Microwave is a RF Mixer with LO Frequency 1.78 to 1.84 GHz, IF Frequency 70 MHz, Conversion Loss 8 dB, LO Drive - Power 10 dBm, P1dB 5 dBm. Tags: Surface Mount, Triple Balanced Mixer. More details for PL-20-A can be seen below.