The T3-20GLS from Marki Microwave is a RF Mixer with RF Frequency 0.01 to 20 GHz, LO Frequency 0.01 to 20 GHz, IF Frequency 0.001 to 10 GHz, Conversion Loss 7.5 to 14 dB, LO Drive - Power 15 to 25 dBm. Tags: Module with Connectors, Two Tone Terminator Mixer. More details for T3-20GLS can be seen below.