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The ADE-20 from Mini Circuits is a RF Mixer with RF Frequency 0 to 2000 MHz, IF Frequency 0 to 300 MHz, LO Frequency 0 to 1500 MHz, Conversion Loss 5.4 to 7.8 dB, P1dB 1 dBm. More details for ADE-20 can be seen below.
Triple Balanced Surface Mount Mixer from 1 to 3500 MHz
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