The QM2040A from Polyphase Microwave is a Modulator with RF Frequency 2 to 4 GHz, RF Frequency 2 to 4 GHz, LO Frequency 2 to 4 GHz, Conversion Loss 8 to 10.5 dB, P1dB 7 dBm (Input). Tags: Module with Connectors. More details for QM2040A can be seen below.