The SIM-U63 from Mini Circuits is a RF Mixer with RF Frequency 3800 to 6000 MHz, LO Frequency 3100 to 5700 MHz, IF Frequency 1600 to 2500 MHz, Conversion Loss 6.9 to 8.4 dB, P1dB 1 dBm. Tags: Surface Mount, Up-Conversion Mixer. More details for SIM-U63 can be seen below.