Spacek Labs model PKKa-5B operates at an LO and RF input frequency of 18 to 40 GHz in WRD-180 waveguide. This low-noise mixer-pre-amplifier has a double sideband noise figure of 4 dB typical and 8 dB maximum using an LO input power of 0 to +4 dBm. The PKKa-5B has an IF output frequency of 10 to 500 MHz in SMA(F). RF to IF gain is 25 dB typical. Bias is +15 VDC at 50 mA.