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The VAY-1 from Mini Circuits is a RF Mixer with RF Frequency 0 to 500 MHz, IF Frequency 0.02 to 500 MHz, LO Frequency 0 to 0.5 MHz, Conversion Loss 5.79 to 8.5 dB, LO/RF Isolation 46 dB. More details for VAY-1 can be seen below.
Triple Balanced Surface Mount Mixer from 1 to 3500 MHz
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