The PH-20-A from Pulsar Microwave is a RF Mixer with LO Frequency 1.78 to 1.84 GHz, IF Frequency 70 MHz, Conversion Loss 8.3 dB, LO Drive - Power 23 dBm, P1dB 18 dBm. Tags: Surface Mount, Triple Balanced Mixer. More details for PH-20-A can be seen below.