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Amazon.com: AD831 High Frequency Transducer RF Mixer Module 500MHz Bandwidth Mixing Down Mixing Dual Balanced Mixer Single Chip Radio Frequency Converter -10dBm : Musical Instruments
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Amazon.com: Microwave Radio Frequency Dual Balanced RF Mixer Frequency Transducer RFin=1.5-4.5GHz RFout=DC-1.5GHz LO=312 : Electronics
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