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The MABA-009807-CF4010 from MACOM is a Balun with Frequency 0.05 to 3.07 MHz, Impedance Ratio (Num) 1:4, Insertion Loss 1 dB. More details for MABA-009807-CF4010 can be seen below.
1:1 Transmission Line Transformer from 45 to 1200 MHz
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