The T3H-20GLS from Marki Microwave is a RF Mixer with RF Frequency 0.01 to 20 GHz, LO Frequency 0.01 to 20 GHz, IF Frequency 10 to 18000 MHz, Conversion Loss 8.5 to 15.5 dB, LO Drive - Power 15 to 25 dBm. Tags: Module with Connectors, Two Tone Terminator Mixer. More details for T3H-20GLS can be seen below.