The MDL510 from R & K Company Limited is a RF Mixer with LO Frequency 10 KHz to 250 MHz, IF Frequency DC to 250 MHz, Conversion Loss 5 to 9.5 dB, LO Drive - Power 7 dBm, P1dB 1 dBm. Tags: Drop-In, Double Balanced Mixer. More details for MDL510 can be seen below.