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The CER0644A from CTS Electronic Components is a RF Duplexer with Frequency 1.75 to 1.85 GHz, Band 1 1.84 to 1.85 GHz, Band 2 1.75 to 1.76 GHz, Power 3 W, Insertion Loss 2.5 dB. More details for CER0644A can be seen below.
782/751 MHz Ceramic Duplexer
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