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The SB21A2 from Sigatek is a Bias Tee with Frequency 50 to 800 MHz, Voltage 100 V, Current 6 A, Insertion Loss 0.6 dB, Isolation 25 dB. More details for SB21A2 can be seen below.
40 W Coaxial Bias Tee from 700 to 6000 MHz
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